Texas Instruments Parallel I/O Ports 461

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Manufacturers (1)
    • Texas Instruments
    • Analog Devices
    • Asix Electronics
    • Broadcom
    • Conexant Systems
    • Diodes Incorporated
    • Exar
    • Hitachi
    • IXYS Corporation
    • Infineon Technologies
    • Intel
    • Intersil
    • Lapis Semiconductor
    • Maxim Integrated
    • Microchip Technology
    • Motorola
    • NXP Semiconductors
    • Nexperia
    • Onsemi
    • Philips Semiconductors
    • ROHM
    • Renesas Electronics
    • Rochester Electronics
    • STMicroelectronics
    • Samsung
    • Toshiba
Peripheral IC Type
    • PARALLEL IO PORT, GENERAL PURPOSE
    • PARALLEL IO PORT, PRINTER INTERFACE
Temperature Grade
    • AUTOMOTIVE
    • COMMERCIAL
    • COMMERCIAL EXTENDED
    • INDUSTRIAL
    • MILITARY
    • OTHER
Terminal Form
    • BALL
    • BU
    • BUTT
    • GULL WING
    • J BEND
    • NO LEAD
    • PIN/PEG
    • THROUGH-HOLE
    • UNSPECIFIED
No. of Terminals
    • 10
    • 100
    • 128
    • 14
    • 144
    • 16
    • 18
    • 20
    • 24
    • 25
    • 28
    • 32
    • 36
    • 40
    • 44
    • 48
    • 52
    • 56
    • 64
    • 68
    • 8
    • 80
    • 9
Package Code
    • BGA
    • DIE
    • DIP
    • FBGA
    • FQFP
    • HQCCN
    • HSSOP
    • HVQCCN
    • HVSON
    • LFQFP
    • LQFP
    • LSSOP
    • QCCJ
    • QCCN
    • QFP
    • QIP
    • SDIP
    • SOP
    • SSOP
    • TFBGA
    • TFQFP
    • TSSOP
    • VFBGA
    • VFLGA
    • VQCCN
    • VSON
    • VSSOP
    • WQCCJ
    • XMA
Package Shape
    • RECTANGULAR
    • SQUARE
    • UNSPECIFIED
Package Body Material
    • CERAMIC
    • CERAMIC, GLASS-SEALED
    • CERAMIC, METAL-SEALED COFIRED
    • PLASTIC/EPOXY
    • UNSPECIFIED
Surface Mount
    • NO
    • YES
Maximum Supply Voltage
    • 1.5 V
    • 1.95 V
    • 1.98 V
    • 10.5 V
    • 2.7 V
    • 3 V
    • 3.6 V
    • 5.25 V
    • 5.5 V
    • 5.75 V
    • 6 V
    • 6.5 V
Screening Level
    • 38535Q/M;38534H;883B
    • AEC-Q100
    • AEC-Q100; TS 16949
    • MIL-PRF-38535 Class Q
    • MIL-PRF-38535 Class V
    • MIL-STD-883
    • MIL-STD-883 Class B (Modified)
    • TS 16949
Address Bus Width
    • 1
    • 2
    • 4
    • 8
No. of Bits
    • 1
    • 10
    • 12
    • 14
    • 16
    • 18
    • 20
    • 24
    • 4
    • 40
    • 60
    • 8
    • 9
Bit Size
    • 8
Power Supplies (V)
    • 1.2/3.3
    • 1.8
    • 1.8/3
    • 1.8/3.3
    • 1.8/5
    • 2.3/5.5
    • 2.5/3.3
    • 2.5/5
    • 2/5
    • 2/5.5
    • 2/6
    • 3
    • 3.3
    • 3.3/5
    • 3/3.3
    • 3/5
    • 5
    • 5/10
Package Style (Meter)
    • CHIP CARRIER
    • CHIP CARRIER, HEAT SINK/SLUG
    • CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
    • CHIP CARRIER, VERY THIN PROFILE
    • CHIP CARRIER, VERY THIN PROFILE, HEAT SINK/SLUG
    • CHIP CARRIER, WINDOW
    • FLATPACK
    • FLATPACK, FINE PITCH
    • FLATPACK, LOW PROFILE
    • FLATPACK, LOW PROFILE, FINE PITCH
    • FLATPACK, THIN PROFILE, FINE PITCH
    • GRID ARRAY
    • GRID ARRAY, FINE PITCH
    • GRID ARRAY, THIN PROFILE, FINE PITCH
    • GRID ARRAY, VERY THIN PROFILE, FINE PITCH
    • IN-LINE
    • IN-LINE, SHRINK PITCH
    • MICRO ELECTRONIC ASSEMBLY
    • SMALL OUTLINE
    • SMALL OUTLINE, HEAT SINK/SLUG, SHRINK PITCH
    • SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
    • SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
    • SMALL OUTLINE, SHRINK PITCH
    • SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
    • SMALL OUTLINE, VERY THIN PROFILE
    • SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
    • UNCASED CHIP
Package Equivalence Code
    • BGA16,4X4,20
    • BGA20,4X5,20
    • BGA24,5X5,16
    • BGA24,5X5,20
    • BGA25,5X5,16
    • BGA25,5X5,20
    • BGA36,6X6,20
    • BGA36.6X6,16
    • BGA8,2X4,20
    • BGA9,3X3,20
    • DIE OR CHIP
    • DIP14,.3
    • DIP16,.3
    • DIP18,.3
    • DIP20,.3
    • DIP24,.3
    • DIP24,.4
    • DIP24,.6
    • DIP28,.3
    • DIP28,.6
    • DIP40,.6
    • LCC16,.07X.1,16
    • LCC16,.12SQ,20
    • LCC16,.14X.16,60/20
    • LCC16,.16SQ,25
    • LCC16/20,.14X.16,20
    • LCC20,.08X.12,16
    • LCC20,.16SQ,20
    • LCC20,.20SQ,25
    • LCC20/24,.14X.18,20
    • LCC24,.14SQ,16
    • LCC24,.14X.2,60/20
    • LCC24,.16SQ,20
    • LCC24/28,.14X.2,20
    • LCC28,.24SQ,25
    • LCC32,.2SQ,20
    • LCC40,.5SQ,40
    • LCC44,.65SQ
    • LCC56,.31SQ,20
    • LCC64,.55X.8,40
    • LDCC(UNSPEC)
    • LDCC28,.5SQ
    • LDCC44,.7SQ
    • LDCC52,.8SQ
    • LDCC68,1.0SQ
    • LGA16,4X4,16
    • LGA24,5X5,16
    • QFP100(UNSPEC)
    • QFP100,.63SQ,20
    • QFP44,.52SQ,32
    • QFP44,.57SQ,32
    • QFP44,.5SQ,32
    • QFP44,.63SQ,40
    • QFP44,.7SQ,32
    • QFP52,.47SQ
    • QFP52,.52SQ
    • QFP64,.47SQ,20
    • QFP64,.63SQ,32
    • QFP64,.6SQ,32
    • QFP64,.7X.95,40
    • QFP80,.55SQ,20
    • QFP80,.64SQ
    • QFP80,.7SQ,32
    • QUIP64A,.7/.9
    • SOLCC8,.11,20
    • SOP14,.25
    • SOP16,.25
    • SOP16,.3
    • SOP16,.4
    • SOP18,.4
    • SOP20,.3
    • SOP20,.4
    • SOP24,.3
    • SOP24,.3,40
    • SOP24,.4
    • SOP28,.4
    • SOP32,.4
    • SOP32,.4,32
    • SOP32,.45
    • SOP36,.4,32
    • SOP8,.25
    • SSOP16,.25
    • SSOP16,.3
    • SSOP20,.25
    • SSOP20,.3
    • SSOP24,.24
    • SSOP24,.3
    • SSOP28,.3
    • SSOP48,.4
    • TQFP64,.63SQ,32
    • TQFP80,.55SQ
    • TSSOP10,.19,20
    • TSSOP16,.25
    • TSSOP16,.25,16
    • TSSOP20,.25
    • TSSOP20,.25,16
    • TSSOP24,.25
    • TSSOP24,.25,16
    • TSSOP28,.25
    • TSSOP56,.3,20
    • TSSOP8,.12,20
    • TSSOP8,.19
Minimum Supply Voltage
    • .8 V
    • 1.08 V
    • 1.1 V
    • 1.62 V
    • 1.65 V
    • 1.7 V
    • 1.71 V
    • 1.8 V
    • 2 V
    • 2.25 V
    • 2.3 V
    • 2.5 V
    • 2.7 V
    • 2.8 V
    • 3 V
    • 4 V
    • 4.2 V
    • 4.5 V
    • 4.75 V
Maximum Operating Temperature
    • 100 Cel
    • 105 Cel
    • 125 Cel
    • 65 Cel
    • 70 Cel
    • 75 Cel
    • 80 Cel
    • 85 Cel
CPU Family
    • 6500
    • 8051
    • 8085
    • MCP23X17
    • NSC800
    • TXS
Minimum Operating Temperature
    • -10 Cel
    • -20 Cel
    • -25 Cel
    • -30 Cel
    • -40 Cel
    • -55 Cel
    • 0 Cel
Terminal Finish
    • GOLD
    • MATTE TIN
    • MATTE TIN/NICKEL PALLADIUM GOLD
    • Matte Tin (Sn)
    • Matte Tin (Sn) - annealed
    • NICKEL PALLADIUM GOLD
    • NICKEL PALLADIUM GOLD SILVER
    • Nickel/Palladium/Gold (Ni/Pd/Au)
    • Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag)
    • TIN
    • TIN BISMUTH
    • TIN LEAD
    • TIN SILVER COPPER
    • TIN SILVER COPPER NICKEL
    • TIN/NICKEL PALLADIUM GOLD
    • Tin (Sn)
    • Tin/Bismuth (Sn/Bi)
    • Tin/Lead (Sn/Pb)
    • Tin/Lead (Sn/Pb) - hot dipped
    • Tin/Lead (Sn85Pb15)
    • Tin/Silver (Sn/Ag)
    • Tin/Silver/Copper (Sn/Ag/Cu)
Ultraviolet Erasable
    • N
    • Y
Terminal Position
    • BOTTOM
    • DUAL
    • QUAD
    • UNSPECIFIED
    • UPPER
No. of Ports
    • 0
    • 1
    • 12
    • 16
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
Maximum Seated Height
    • .4 mm
    • .5 mm
    • .55 mm
    • .6 mm
    • .61 mm
    • .645 mm
    • .65 mm
    • .66 mm
    • .8 mm
    • .85 mm
    • .9 mm
    • 1 mm
    • 1.1 mm
    • 1.16 mm
    • 1.2 mm
    • 1.5 mm
    • 1.54 mm
    • 1.6 mm
    • 1.7 mm
    • 1.73 mm
    • 1.75 mm
    • 1.85 mm
    • 1.9 mm
    • 1.99 mm
    • 11.18 mm
    • 2 mm
    • 2.03 mm
    • 2.05 mm
    • 2.08 mm
    • 2.1 mm
    • 2.35 mm
    • 2.4 mm
    • 2.45 mm
    • 2.55 mm
    • 2.65 mm
    • 2.7 mm
    • 2.794 mm
    • 2.8 mm
    • 3 mm
    • 3.05 mm
    • 3.1 mm
    • 3.27 mm
    • 3.3 mm
    • 3.46 mm
    • 4.064 mm
    • 4.19 mm
    • 4.2 mm
    • 4.31 mm
    • 4.32 mm
    • 4.44 mm
    • 4.5 mm
    • 4.52 mm
    • 4.57 mm
    • 4.572 mm
    • 4.7 mm
    • 4.75 mm
    • 4.8 mm
    • 5 mm
    • 5.08 mm
    • 5.1 mm
    • 5.334 mm
    • 5.72 mm
    • 5.84 mm
    • 6.35 mm
ROM Words
    • 131072
    • 262144
Width
    • .9 mm
    • 1.6 mm
    • 1.8 mm
    • 1.96 mm
    • 1.97 mm
    • 10 mm
    • 11.43 mm
    • 12 mm
    • 12.19 mm
    • 13.71 mm
    • 14 mm
    • 15.24 mm
    • 16.485 mm
    • 16.51 mm
    • 16.535 mm
    • 16.56 mm
    • 16.585 mm
    • 16.5862 mm
    • 16.6 mm
    • 19.05 mm
    • 19.1 mm
    • 19.1262 mm
    • 2 mm
    • 2.5 mm
    • 2.6 mm
    • 20 mm
    • 24.105 mm
    • 24.13 mm
    • 24.18 mm
    • 24.2316 mm
    • 3 mm
    • 3.5 mm
    • 3.6 mm
    • 3.9 mm
    • 3.9116 mm
    • 4 mm
    • 4.4 mm
    • 5 mm
    • 5.275 mm
    • 5.29 mm
    • 5.3 mm
    • 6 mm
    • 6.1 mm
    • 7.47 mm
    • 7.49 mm
    • 7.5 mm
    • 7.62 mm
    • 8 mm
    • 8.4 mm
    • 8.8 mm
    • 9.95 mm
Additional Features
    • 128K X 8 REPROGRAMMABLE EPROM; GENERAL PURPOSE ZPLD, DECODING ZPLD & PERIPHERAL ZPLD
    • ALSO REQURIES 2.3 V FOR PORT B TO OPERATE
    • AND, OR ACCUMULATOR TO PORT
    • CAN ALSO OPERATE AT 5V SUPPLY
    • GENERAL PURPOSE ZPLD
    • IT ALSO OPERATES AT 2.5V, 3.3V AND 5V
    • IT ALSO OPERATES AT 3.3V SUPPLY
    • IT ALSO OPERATES AT 5 V
    • OPERATES AT 3V MIN SUPPLY
External Data Bus Width
    • 0
    • 1
    • 16
    • 4
    • 8
Maximum Clock Frequency
    • .1 MHz
    • .4 MHz
    • 1 MHz
    • 1.7 MHz
    • 10 MHz
    • 2 MHz
    • 3.4 MHz
    • 4 MHz
    • 6 MHz
    • 6.06 MHz
    • 6.17 MHz
    • 8 MHz
Maximum Time At Peak Reflow Temperature (s)
    • 10
    • 20
    • 30
    • 40
    • NOT SPECIFIED
Peak Reflow Temperature (C)
    • 225
    • 235
    • 240
    • 245
    • 250
    • 260
    • NOT SPECIFIED
Length
    • 1.6 mm
    • 1.96 mm
    • 1.97 mm
    • 1.98 mm
    • 10 mm
    • 10.1 mm
    • 10.2 mm
    • 10.3 mm
    • 11.53 mm
    • 11.55 mm
    • 12 mm
    • 12.19 mm
    • 12.6 mm
    • 12.8 mm
    • 14 mm
    • 15.02 mm
    • 15.24 mm
    • 15.3 mm
    • 15.39 mm
    • 15.395 mm
    • 15.4 mm
    • 15.875 mm
    • 16.485 mm
    • 16.51 mm
    • 16.535 mm
    • 16.56 mm
    • 16.585 mm
    • 16.5862 mm
    • 16.6 mm
    • 17.5 mm
    • 17.9 mm
    • 19 mm
    • 19.025 mm
    • 19.1 mm
    • 19.1262 mm
    • 19.175 mm
    • 19.305 mm
    • 2 mm
    • 2.3 mm
    • 2.6 mm
    • 20 mm
    • 20.525 mm
    • 21.6 mm
    • 22.86 mm
    • 24 mm
    • 24.105 mm
    • 24.13 mm
    • 24.18 mm
    • 24.2316 mm
    • 29.2 mm
    • 3 mm
    • 3.5 mm
    • 3.6 mm
    • 31.685 mm
    • 31.7 mm
    • 31.75 mm
    • 32 mm
    • 34.671 mm
    • 4 mm
    • 4.1 mm
    • 4.4 mm
    • 4.5 mm
    • 4.89 mm
    • 4.9 mm
    • 5 mm
    • 5.2 mm
    • 5.5 mm
    • 50.7 mm
    • 50.8 mm
    • 51.75 mm
    • 51.98 mm
    • 52.07 mm
    • 52.18 mm
    • 52.197 mm
    • 52.26 mm
    • 52.275 mm
    • 52.325 mm
    • 52.451 mm
    • 52.455 mm
    • 52.8 mm
    • 57.5 mm
    • 6 mm
    • 6.2 mm
    • 6.5 mm
    • 60.96 mm
    • 61.72 mm
    • 63.5 mm
    • 7.2 mm
    • 7.8 mm
    • 8 mm
    • 8.2 mm
    • 8.65 mm
    • 8.7 mm
    • 9.7 mm
    • 9.9 mm
    • 9.95 mm
Total Dose (V)
    • 100k Rad(Si)
ROM Bits Size
    • 1024 Bits
    • 1048576 Bits
    • 1310720 Bits
    • 2097152 Bits
    • 2359296 Bits
    • 256 Bits
    • 262144 Bits
    • 4194304 Bits
    • 4456448 Bits
    • 512 Bits
    • 524288 Bits
    • 8912896 Bits
No. of Timers
    • 0
    • 1
    • 2
RAM Bytes
    • 32768
    • 8192
Technology
    • BICMOS
    • BIPOLAR
    • CMOS
    • MOS
    • NMOS
    • TTL
Maximum Supply Current
    • .006 mA
    • .02 mA
    • .025 mA
    • .03 mA
    • .036 mA
    • .04 mA
    • .055 mA
    • .06 mA
    • .1 mA
    • .12 mA
    • .15 mA
    • .175 mA
    • .2 mA
    • .5 mA
    • .75 mA
    • 1 mA
    • 1.5 mA
    • 1.6 mA
    • 10 mA
    • 100 mA
    • 115 mA
    • 120 mA
    • 125 mA
    • 15 mA
    • 160 mA
    • 180 mA
    • 190 mA
    • 2 mA
    • 2.4 mA
    • 200 mA
    • 25 mA
    • 250 mA
    • 3 mA
    • 40 mA
    • 5 mA
    • 6 mA
    • 7 mA
    • 8 mA
    • 95 mA
Nominal Supply Voltage
    • 1.1 V
    • 1.2 V
    • 1.8 V
    • 1.9 V
    • 10 V
    • 2.3 V
    • 2.5 V
    • 2.7 V
    • 3 V
    • 3.3 V
    • 4.5 V
    • 5 V
Memory Organization
    • 128X8
    • 256X8
Sub-Category
    • Microcontrollers
    • Other Microprocessor ICs
    • Other uPs/uCs/Peripheral ICs
    • Parallel IO Port
    • Parallel IO Ports
ROM Programmability
    • FLASH
Terminal Pitch
    • .4 mm
    • .5 mm
    • .55 mm
    • .635 mm
    • .65 mm
    • .8 mm
    • 1 mm
    • 1.02 mm
    • 1.27 mm
    • 1.778 mm
    • 2.54 mm
JESD-30 Code
    • R-CDIP-T24
    • R-CDIP-T40
    • R-CDIP-T48
    • R-GDIP-T40
    • R-PBGA-B20
    • R-PBGA-B36
    • R-PDIP-T14
    • R-PDIP-T16
    • R-PDIP-T18
    • R-PDIP-T20
    • R-PDIP-T24
    • R-PDIP-T28
    • R-PDIP-T40
    • R-PDIP-T48
    • R-PDIP-T64
    • R-PDSO-G14
    • R-PDSO-G16
    • R-PDSO-G18
    • R-PDSO-G20
    • R-PDSO-G24
    • R-PDSO-G28
    • R-PDSO-G32
    • R-PDSO-G36
    • R-PDSO-G40
    • R-PDSO-G48
    • R-PDSO-G56
    • R-PDSO-G8
    • R-PQCC-N16
    • R-PQCC-N20
    • R-PQCC-N24
    • R-PQFP-G100
    • R-PQFP-G128
    • R-PQFP-G64
    • R-PQFP-G80
    • R-PQFP-GG
    • R-PQIP-P64
    • R-PQIP-T16
    • R-XBGA-B8
    • R-XDIP-T24
    • R-XDIP-T28
    • R-XDIP-T40
    • R-XQCC-N16
    • R-XQCC-N20
    • R-XQCC-N24
    • R-XQCC-N64
    • R-XQIP-P64
    • S-CQCC-J44
    • S-CQCC-J68
    • S-CQCC-N40
    • S-CQCC-N44
    • S-GQCC-J44
    • S-GQCC-J68
    • S-PBGA-B16
    • S-PBGA-B24
    • S-PBGA-B25
    • S-PBGA-B36
    • S-PBGA-B9
    • S-PBGA-N16
    • S-PDSO-G10
    • S-PDSO-G16
    • S-PDSO-G24
    • S-PDSO-G28
    • S-PDSO-G8
    • S-PDSO-N8
    • S-PQCC-J28
    • S-PQCC-J44
    • S-PQCC-J52
    • S-PQCC-J68
    • S-PQCC-N16
    • S-PQCC-N20
    • S-PQCC-N24
    • S-PQCC-N28
    • S-PQCC-N32
    • S-PQCC-N56
    • S-PQCC-N8
    • S-PQFP-G100
    • S-PQFP-G144
    • S-PQFP-G44
    • S-PQFP-G52
    • S-PQFP-G64
    • S-PQFP-G68
    • S-PQFP-G80
    • S-XBGA-N16
    • S-XQCC-N16
    • S-XQCC-N24
    • S-XQCC-N32
    • S-XQCC-N44
    • S-XQCC-N8
    • S-XQFP-G80
    • S-XXMA-X
    • X-XUUC-N
Moisture Sensitivity Level (MSL)
    • 1
    • 2
    • 3
    • 4
Qualification
    • Not Qualified
    • Qualified
Speed
    • 40 rpm
JESD-609 Code
    • e0
    • e1
    • e2
    • e3
    • e3/e4
    • e4
    • e6
Maximum Standby Current
    • .000005 Amp
    • .00002 Amp
    • .00004 Amp
    • .0001 Amp
    • .0002 Amp
No. of I/O Lines
    • 0
    • 10
    • 12
    • 15
    • 16
    • 18
    • 19
    • 2
    • 20
    • 22
    • 24
    • 27
    • 36
    • 4
    • 40
    • 44
    • 48
    • 5
    • 52
    • 60
    • 63
    • 64
    • 7
    • 8
    • 9
    • 96
Maximum Access Time
    • .00000007 ns
    • .00000009 ns
    • .0000001 ns
    • .00000012 ns
    • .00000015 ns
    • .0000002 ns
    • .00000025 ns
Reset All
Part RoHS Manufacturer Peripheral IC Type Temperature Grade Terminal Form No. of Terminals Package Code Package Shape Package Body Material Surface Mount Maximum Supply Voltage Screening Level Address Bus Width No. of Bits Bit Size Power Supplies (V) Package Style (Meter) Package Equivalence Code Minimum Supply Voltage Maximum Operating Temperature CPU Family Minimum Operating Temperature Terminal Finish Ultraviolet Erasable Terminal Position No. of Ports Maximum Seated Height ROM Words Width Additional Features External Data Bus Width Maximum Clock Frequency Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Length Total Dose (V) ROM Bits Size No. of Timers RAM Bytes Technology Maximum Supply Current Nominal Supply Voltage Memory Organization Sub-Category ROM Programmability Terminal Pitch JESD-30 Code Moisture Sensitivity Level (MSL) Qualification Speed JESD-609 Code Maximum Standby Current No. of I/O Lines Maximum Access Time

PCA9534ADBR

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

8

2.5/5

SMALL OUTLINE, SHRINK PITCH

SSOP16,.3

2.3 V

85 Cel

-40 Cel

Nickel/Palladium/Gold (Ni/Pd/Au)

DUAL

1

2 mm

5.3 mm

.4 MHz

NOT SPECIFIED

260

6.2 mm

CMOS

.175 mA

5 V

Parallel IO Port

.65 mm

R-PDSO-G16

1

Not Qualified

e4

8

PCA9534RGVRG4

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

NO LEAD

16

HVQCCN

SQUARE

PLASTIC/EPOXY

YES

5.5 V

8

8

2.5/5

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC16,.16SQ,25

2.3 V

85 Cel

-40 Cel

Nickel/Palladium/Gold (Ni/Pd/Au)

QUAD

1

1 mm

4 mm

.4 MHz

NOT SPECIFIED

260

4 mm

CMOS

.175 mA

5 V

Parallel IO Ports

.65 mm

S-PQCC-N16

2

Not Qualified

e4

8

PCA9538DBRG4

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

2.5/5

SMALL OUTLINE, SHRINK PITCH

SSOP16,.3

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

2 mm

5.3 mm

.4 MHz

30

260

6.2 mm

CMOS

.175 mA

2.5 V

Parallel IO Ports

.65 mm

R-PDSO-G16

1

Not Qualified

e4

8

PCA9539DBRG4

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

SSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

16

2.5/5

SMALL OUTLINE, SHRINK PITCH

SSOP24,.3

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

2

2 mm

5.3 mm

30

260

8.2 mm

CMOS

3 V

Parallel IO Port

.65 mm

R-PDSO-G24

1

Not Qualified

e4

16

PCA9557DT

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

8

2.5/5

SMALL OUTLINE

SOP16,.25

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.75 mm

3.9 mm

.4 MHz

30

260

9.9 mm

CMOS

.025 mA

2.5 V

Parallel IO Ports

1.27 mm

R-PDSO-G16

1

Not Qualified

e4

8

PCF8574ANE4

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

THROUGH-HOLE

16

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

6 V

8

8

3/5

IN-LINE

DIP16,.3

2.5 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

5.08 mm

7.62 mm

.1 MHz

19.305 mm

CMOS

.1 mA

5 V

Parallel IO Port

2.54 mm

R-PDIP-T16

Not Qualified

e4

8

PCF8575CDWE4

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

16

5

SMALL OUTLINE

SOP24,.4

4.5 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

2

2.65 mm

7.5 mm

.4 MHz

30

260

15.4 mm

CMOS

.2 mA

5 V

Parallel IO Ports

1.27 mm

R-PDSO-G24

1

Not Qualified

e4

16

TCA6408PW

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

1.8/5

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

TSSOP16,.25

1.65 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.2 mm

4.4 mm

30

260

5 mm

CMOS

1.8 V

Parallel IO Port

.65 mm

R-PDSO-G16

1

Not Qualified

e4

8

TCA6408PWG4

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

1.8/5

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

TSSOP16,.25

1.65 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.2 mm

4.4 mm

30

260

5 mm

CMOS

1.8 V

Parallel IO Port

.65 mm

R-PDSO-G16

1

Not Qualified

e4

8

TCA6408PWRG4

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

1.8/5

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

TSSOP16,.25

1.65 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.2 mm

4.4 mm

30

260

5 mm

CMOS

1.8 V

Parallel IO Port

.65 mm

R-PDSO-G16

1

Not Qualified

e4

8

TCA6408RGTR

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

NO LEAD

16

HVQCCN

SQUARE

PLASTIC/EPOXY

YES

5.5 V

8

1.8/5

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC16,.12SQ,20

1.65 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

1

1 mm

3 mm

30

260

3 mm

CMOS

1.8 V

Parallel IO Port

.5 mm

S-PQCC-N16

2

Not Qualified

e4

8

TCA6408RGTRG4

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

NO LEAD

16

HVQCCN

SQUARE

PLASTIC/EPOXY

YES

5.5 V

8

1.8/5

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC16,.12SQ,20

1.65 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

1

1 mm

3 mm

30

260

3 mm

CMOS

1.8 V

Parallel IO Port

.5 mm

S-PQCC-N16

2

Not Qualified

e4

8

TCA6408ZXYR

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

BALL

20

VFBGA

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

1.8/5

GRID ARRAY, VERY THIN PROFILE, FINE PITCH

BGA20,4X5,20

1.65 V

85 Cel

-40 Cel

TIN SILVER COPPER

BOTTOM

1

.61 mm

2.5 mm

30

260

3 mm

CMOS

1.8 V

Parallel IO Port

.5 mm

R-PBGA-B20

1

Not Qualified

e1

8

TCAL6416RTWR

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

NO LEAD

24

HVQCCN

SQUARE

PLASTIC/EPOXY

YES

3.6 V

2

16

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC24,.16SQ,20

1.08 V

125 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

16

.8 mm

4 mm

0

1 MHz

260

4 mm

CMOS

.5 mm

S-PQCC-N24

1

e4

16

PCA9534ADWR

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

8

2.5/5

SMALL OUTLINE

SOP16,.4

2.3 V

85 Cel

-40 Cel

Nickel/Palladium/Gold (Ni/Pd/Au)

DUAL

1

2.65 mm

7.5 mm

.4 MHz

NOT SPECIFIED

260

10.3 mm

CMOS

.175 mA

5 V

Parallel IO Port

1.27 mm

R-PDSO-G16

1

Not Qualified

e4

8

PCA9539DGVRG4

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

16

2.5/5

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

TSSOP24,.25

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

2

1.2 mm

4.4 mm

30

260

5 mm

CMOS

3 V

Parallel IO Port

.4 mm

R-PDSO-G24

1

Not Qualified

e4

16

PCA9557DBR

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

8

2.5/5

SMALL OUTLINE, SHRINK PITCH

SSOP16,.3

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

2 mm

5.3 mm

.4 MHz

30

260

6.2 mm

CMOS

.025 mA

2.5 V

Parallel IO Ports

.65 mm

R-PDSO-G16

1

Not Qualified

e4

8

PCA9557RGVRG4

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

NO LEAD

16

HVQCCN

SQUARE

PLASTIC/EPOXY

YES

5.5 V

8

2.5/5

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC16,.16SQ,25

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

QUAD

1

1 mm

4 mm

.4 MHz

30

260

4 mm

CMOS

.025 mA

2.5 V

Parallel IO Ports

.65 mm

S-PQCC-N16

2

Not Qualified

e4

8

PCF8575CDWG4

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

16

5

SMALL OUTLINE

SOP24,.4

4.5 V

85 Cel

-40 Cel

Nickel/Palladium/Gold (Ni/Pd/Au)

DUAL

2

2.65 mm

7.5 mm

.4 MHz

NOT SPECIFIED

260

15.4 mm

CMOS

.2 mA

5 V

Parallel IO Ports

1.27 mm

R-PDSO-G24

1

Not Qualified

e4

16

PCA9557DB

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

8

8

2.5/5

SMALL OUTLINE, SHRINK PITCH

SSOP16,.3

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

2 mm

5.3 mm

.4 MHz

30

260

6.2 mm

CMOS

.025 mA

2.5 V

Parallel IO Ports

.65 mm

R-PDSO-G16

1

Not Qualified

e4

8

PCA9534ARGVR

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

NO LEAD

16

HVQCCN

SQUARE

PLASTIC/EPOXY

YES

5.5 V

8

8

2.5/5

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC16,.16SQ,25

2.3 V

85 Cel

-40 Cel

Nickel/Palladium/Gold (Ni/Pd/Au)

QUAD

1

1 mm

4 mm

.4 MHz

NOT SPECIFIED

260

4 mm

CMOS

.175 mA

5 V

Parallel IO Port

.65 mm

S-PQCC-N16

2

Not Qualified

e4

8

SN74LS612JD

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

COMMERCIAL

THROUGH-HOLE

40

DIP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

NO

5

IN-LINE

DIP40,.6

70 Cel

0 Cel

DUAL

1

NOT SPECIFIED

NOT SPECIFIED

TTL

5 V

Other Microprocessor ICs

2.54 mm

R-CDIP-T40

Not Qualified

12

SNJ54LS610JD

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

MILITARY

THROUGH-HOLE

40

DIP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

NO

5.5 V

38535Q/M;38534H;883B

IN-LINE

DIP40,.6

4.5 V

125 Cel

-55 Cel

DUAL

1

NOT SPECIFIED

NOT SPECIFIED

CMOS

5 V

Other Microprocessor ICs

2.54 mm

R-CDIP-T40

Not Qualified

12

SN74LS610JD

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

COMMERCIAL

THROUGH-HOLE

40

DIP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

NO

IN-LINE

DIP40,.6

70 Cel

0 Cel

DUAL

1

NOT SPECIFIED

NOT SPECIFIED

TTL

Other Microprocessor ICs

2.54 mm

R-CDIP-T40

Not Qualified

12

SN54LS612JD

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

MILITARY

THROUGH-HOLE

40

DIP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

NO

5.5 V

5

IN-LINE

DIP40,.6

4.5 V

125 Cel

-55 Cel

DUAL

1

NOT SPECIFIED

NOT SPECIFIED

CMOS

5 V

Other Microprocessor ICs

2.54 mm

R-CDIP-T40

Not Qualified

12

SN74LS612FN

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

COMMERCIAL

J BEND

44

QCCJ

SQUARE

PLASTIC/EPOXY

YES

5.25 V

5

CHIP CARRIER

LDCC(UNSPEC)

4.75 V

70 Cel

0 Cel

QUAD

1

4.57 mm

16.5862 mm

NOT SPECIFIED

NOT SPECIFIED

16.5862 mm

TTL

5 V

Other Microprocessor ICs

1.27 mm

S-PQCC-J44

Not Qualified

12

SN74LS610N

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

COMMERCIAL

THROUGH-HOLE

40

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

IN-LINE

DIP40,.6

70 Cel

0 Cel

DUAL

1

5.08 mm

15.24 mm

NOT SPECIFIED

NOT SPECIFIED

52.455 mm

TTL

Other Microprocessor ICs

2.54 mm

R-PDIP-T40

Not Qualified

12

SN54LS610FK

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

MILITARY

NO LEAD

44

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

5.5 V

CHIP CARRIER

4.5 V

125 Cel

-55 Cel

QUAD

1

2.03 mm

16.51 mm

16.51 mm

TTL

5 V

1.27 mm

S-CQCC-N44

Not Qualified

12

SNJ54LS613FK

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

MILITARY

NO LEAD

44

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

5.5 V

CHIP CARRIER

4.5 V

125 Cel

-55 Cel

QUAD

1

2.03 mm

16.51 mm

16.51 mm

TTL

5 V

1.27 mm

S-CQCC-N44

Not Qualified

12

SN74LS611FN

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

COMMERCIAL

J BEND

44

QCCJ

SQUARE

PLASTIC/EPOXY

YES

5.25 V

CHIP CARRIER

LDCC(UNSPEC)

4.75 V

70 Cel

0 Cel

QUAD

1

4.57 mm

16.5862 mm

NOT SPECIFIED

NOT SPECIFIED

16.5862 mm

TTL

5 V

Other Microprocessor ICs

1.27 mm

S-PQCC-J44

Not Qualified

12

SN74S412NP1

Texas Instruments

COMMERCIAL

THROUGH-HOLE

24

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

8

IN-LINE

DIP24,.6

70 Cel

0 Cel

DUAL

NOT SPECIFIED

NOT SPECIFIED

CMOS

Parallel IO Port

2.54 mm

R-PDIP-T24

Not Qualified

SN74LS613JD

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

COMMERCIAL

THROUGH-HOLE

40

DIP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

NO

5.25 V

IN-LINE

DIP40,.6

4.75 V

70 Cel

0 Cel

DUAL

1

NOT SPECIFIED

NOT SPECIFIED

CMOS

5 V

Other Microprocessor ICs

2.54 mm

R-CDIP-T40

Not Qualified

12

NSC810AE/883

Texas Instruments

MILITARY

J BEND

QCCJ

CERAMIC

YES

38535Q/M;38534H;883B

16

5

CHIP CARRIER

LDCC(UNSPEC)

125 Cel

NSC800

-55 Cel

QUAD

3

2

CMOS

10 mA

5 V

128X8

Parallel IO Port

Not Qualified

SNJ54LS612JD

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

MILITARY

THROUGH-HOLE

40

DIP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

NO

5.5 V

38535Q/M;38534H;883B

5

IN-LINE

DIP40,.6

4.5 V

125 Cel

-55 Cel

DUAL

1

NOT SPECIFIED

NOT SPECIFIED

CMOS

5 V

Other Microprocessor ICs

2.54 mm

R-CDIP-T40

Not Qualified

12

NSC810NI

Texas Instruments

INDUSTRIAL

THROUGH-HOLE

40

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

16

IN-LINE

DIP40,.6

85 Cel

NSC800

-40 Cel

Tin/Lead (Sn/Pb)

DUAL

3

2

CMOS

128X8

Parallel IO Port

2.54 mm

R-PDIP-T40

Not Qualified

e0

SBP9960MJ

Texas Instruments

MILITARY

THROUGH-HOLE

28

DIP

RECTANGULAR

CERAMIC

NO

1

IN-LINE

DIP28,.6

125 Cel

-55 Cel

DUAL

BIPOLAR

Parallel IO Port

2.54 mm

R-XDIP-T28

Not Qualified

SNJ54LS612FK

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

MILITARY

NO LEAD

44

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

5.5 V

CHIP CARRIER

4.5 V

125 Cel

-55 Cel

QUAD

1

2.03 mm

16.51 mm

16.51 mm

TTL

5 V

1.27 mm

S-CQCC-N44

Not Qualified

12

SN74LS612N

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

COMMERCIAL

THROUGH-HOLE

40

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

5

IN-LINE

DIP40,.6

70 Cel

0 Cel

DUAL

1

5.08 mm

15.24 mm

NOT SPECIFIED

NOT SPECIFIED

52.455 mm

TTL

5 V

Other Microprocessor ICs

2.54 mm

R-PDIP-T40

Not Qualified

12

NSC810AN-1

Texas Instruments

COMMERCIAL

THROUGH-HOLE

40

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

16

5

IN-LINE

DIP40,.6

70 Cel

NSC800

0 Cel

DUAL

3

2

CMOS

10 mA

5 V

128X8

Parallel IO Port

2.54 mm

R-PDIP-T40

Not Qualified

SN74S412N1

Texas Instruments

COMMERCIAL

THROUGH-HOLE

24

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

8

IN-LINE

DIP24,.6

70 Cel

0 Cel

DUAL

NOT SPECIFIED

NOT SPECIFIED

CMOS

Parallel IO Port

2.54 mm

R-PDIP-T24

Not Qualified

TCA1116PWR

Texas Instruments

PARALLEL IO PORT, PRINTER INTERFACE

INDUSTRIAL

GULL WING

24

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

16

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

1.65 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.2 mm

4.4 mm

.4 MHz

30

260

7.8 mm

CMOS

.65 mm

R-PDSO-G24

1

e4

16

SN74S412FN3

Texas Instruments

COMMERCIAL

J BEND

28

QCCJ

SQUARE

PLASTIC/EPOXY

YES

8

CHIP CARRIER

LDCC28,.5SQ

70 Cel

0 Cel

QUAD

NOT SPECIFIED

NOT SPECIFIED

CMOS

Parallel IO Port

1.27 mm

S-PQCC-J28

SN74S412D

Texas Instruments

COMMERCIAL

GULL WING

24

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

8

SMALL OUTLINE

SOP24,.4

70 Cel

0 Cel

DUAL

NOT SPECIFIED

NOT SPECIFIED

CMOS

Parallel IO Port

1.27 mm

R-PDSO-G24

Not Qualified

NSC810AD-1

Texas Instruments

COMMERCIAL

THROUGH-HOLE

40

DIP

RECTANGULAR

CERAMIC

NO

16

5

IN-LINE

DIP40,.6

70 Cel

NSC800

0 Cel

DUAL

3

2

CMOS

10 mA

5 V

128X8

Parallel IO Port

2.54 mm

R-XDIP-T40

Not Qualified

NSC810AV-4I

Texas Instruments

INDUSTRIAL

J BEND

QCCJ

PLASTIC/EPOXY

YES

16

5

CHIP CARRIER

LDCC(UNSPEC)

85 Cel

NSC800

-40 Cel

QUAD

3

2

CMOS

10 mA

5 V

128X8

Parallel IO Port

Not Qualified

NSC810AD-4/883

Texas Instruments

MILITARY

THROUGH-HOLE

40

DIP

RECTANGULAR

CERAMIC

NO

38535Q/M;38534H;883B

16

5

IN-LINE

DIP40,.6

125 Cel

NSC800

-55 Cel

DUAL

3

2

CMOS

10 mA

5 V

128X8

Parallel IO Port

2.54 mm

R-XDIP-T40

Not Qualified

SN74LS611JD

Texas Instruments

PARALLEL IO PORT, GENERAL PURPOSE

COMMERCIAL

THROUGH-HOLE

40

DIP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

NO

5.25 V

IN-LINE

DIP40,.6

4.75 V

70 Cel

0 Cel

DUAL

1

NOT SPECIFIED

NOT SPECIFIED

CMOS

5 V

Other Microprocessor ICs

2.54 mm

R-CDIP-T40

Not Qualified

12

SN74S412J4

Texas Instruments

COMMERCIAL

THROUGH-HOLE

24

DIP

RECTANGULAR

CERAMIC

NO

8

IN-LINE

DIP24,.6

70 Cel

0 Cel

DUAL

NOT SPECIFIED

NOT SPECIFIED

CMOS

Parallel IO Port

2.54 mm

R-XDIP-T24

Parallel I/O Ports

Parallel I/O (Input/Output) ports are a type of interface that allows a microcontroller or microprocessor to communicate with other devices in a parallel fashion. This means that multiple bits of data can be transmitted or received simultaneously, as opposed to serial communication which transmits or receives data one bit at a time.

Parallel I/O ports are commonly found in a wide range of electronic devices, including computers, printers, and industrial control systems. They typically consist of a number of input and output lines, with each line representing a single bit of data. The number of lines can vary depending on the specific device, with some systems having only a few lines while others may have dozens or even hundreds.

One of the advantages of parallel I/O ports is their ability to transfer large amounts of data quickly and efficiently. This makes them particularly useful in applications where real-time data acquisition or high-speed communication is required. For example, parallel ports are commonly used in printers and other peripherals to transfer large amounts of data quickly.

However, one of the limitations of parallel I/O ports is that they require a large number of pins on the microcontroller or microprocessor to accommodate all of the data lines. This can make them difficult to implement in systems with limited space or where a large number of I/O lines are required. In addition, parallel I/O ports can be more susceptible to noise and interference compared to serial communication, which can affect data integrity and transmission speeds.