NOR GATE Logic Gates 2,400+

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Part RoHS Manufacturer Logic IC Type Temperature Grade Terminal Form No. of Terminals Package Code Package Shape Total Dose (V) Package Body Material Schmitt Trigger Surface Mount No. of Functions Technology Screening Level No. of Inputs No. of Bits Translation Packing Method Nominal Supply Voltage / Vsup (V) Power Supplies (V) Load Capacitance (CL) Package Style (Meter) Package Equivalence Code Propagation Delay (tpd) Maximum I (ol) Sub-Category Terminal Pitch Maximum Operating Temperature Output Characteristics Minimum Operating Temperature Terminal Finish Terminal Position Control Type Minimum fmax JESD-30 Code Moisture Sensitivity Level (MSL) Maximum Supply Voltage (Vsup) Maximum Seated Height Width Qualification Output Polarity Minimum Supply Voltage (Vsup) Maximum Power Supply Current (ICC) Additional Features JESD-609 Code Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Length Family

SN74HC27DG4

Texas Instruments

NOR GATE

INDUSTRIAL

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

3

CMOS

3

TUBE

5

2/6

50 pF

SMALL OUTLINE

SOP14,.25

115 ns

4 Amp

Gates

1.27 mm

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

R-PDSO-G14

1

6 V

1.75 mm

3.9 mm

Not Qualified

2 V

e4

30

260

8.65 mm

HC/UH

CD4002BME4

Texas Instruments

NOR GATE

MILITARY

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

2

CMOS

4

TUBE

5

5/15

50 pF

SMALL OUTLINE

SOP14,.25

250 ns

Gates

1.27 mm

125 Cel

-55 Cel

NICKEL PALLADIUM GOLD

DUAL

R-PDSO-G14

1

18 V

1.75 mm

3.9 mm

Not Qualified

3 V

e4

30

260

8.65 mm

4000/14000/40000

74AC11027DR

Texas Instruments

NOR GATE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

3

CMOS

3

TR

5

3.3/5

50 pF

SMALL OUTLINE

SOP16,.25

8.1 ns

24 Amp

Gates

1.27 mm

85 Cel

-40 Cel

DUAL

R-PDSO-G16

5.5 V

1.75 mm

3.9 mm

Not Qualified

3 V

CENTER PIN VCC AND GND

NOT SPECIFIED

NOT SPECIFIED

9.9 mm

AC

SN74HC02N-00

Texas Instruments

NOR GATE

INDUSTRIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

4

CMOS

2

5

50 pF

IN-LINE

23 ns

2.54 mm

85 Cel

-40 Cel

DUAL

R-PDIP-T14

6 V

5.08 mm

7.62 mm

Not Qualified

2 V

19.305 mm

HC/UH

5962-9861101Q2X

Texas Instruments

NOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

4

TTL

MIL-PRF-38535 Class Q

2

5

CHIP CARRIER

18 ns

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

TTL/H/L

SN74AS27DE4

Texas Instruments

NOR GATE

COMMERCIAL

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

3

TTL

3

5

5

50 pF

SMALL OUTLINE

SOP14,.25

4.5 ns

20 Amp

Gates

1.27 mm

70 Cel

0 Cel

NICKEL PALLADIUM GOLD

DUAL

R-PDSO-G14

1

5.5 V

1.75 mm

3.9 mm

Not Qualified

4.5 V

17.1 mA

e4

30

260

8.65 mm

AS

SN74AHC1G02DBVT

Texas Instruments

NOR GATE

AUTOMOTIVE

GULL WING

5

LSSOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

1

CMOS

2

TR

3.3

2/5.5

50 pF

SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

TSOP5/6,.11,37

13 ns

8 Amp

Gates

.95 mm

125 Cel

3-STATE

-40 Cel

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

DUAL

R-PDSO-G5

1

5.5 V

1.45 mm

1.6 mm

Not Qualified

2 V

.01 mA

e4

NOT SPECIFIED

260

2.9 mm

AHC/VHC/H/U/V

SNJ54LVC02AFK

Texas Instruments

NOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

4

CMOS

MIL-PRF-38535

2

TUBE

2.7

3.3

50 pF

CHIP CARRIER

LCC20,.35SQ

5.4 ns

24 Amp

Gates

1.27 mm

125 Cel

-55 Cel

TIN LEAD

QUAD

S-CQCC-N20

3.6 V

2.03 mm

8.89 mm

Not Qualified

2 V

.01 mA

e0

8.89 mm

LVC/LCX/Z

SNJ54F27W

Texas Instruments

NOR GATE

MILITARY

FLAT

14

DFP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

YES

3

TTL

MIL-PRF-38535

3

5

5

FLATPACK

FL14,.3

6 ns

20 Amp

Gates

1.27 mm

125 Cel

-55 Cel

DUAL

R-GDFP-F14

5.5 V

2.03 mm

6.285 mm

Not Qualified

4.5 V

12 mA

9.21 mm

F/FAST

5962-9757101QCX

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

4

CMOS

MIL-PRF-38535 Class Q

2

5

IN-LINE

8.5 ns

2.54 mm

125 Cel

-55 Cel

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Qualified

4.5 V

NOT APPLICABLE

NOT APPLICABLE

19.56 mm

AHCT/VHCT

SN54LS28W-10

Texas Instruments

NOR GATE

MILITARY

FLAT

14

DFP

RECTANGULAR

CERAMIC, GLASS-SEALED

YES

4

TTL

2

5

45 pF

FLATPACK

24 ns

1.27 mm

125 Cel

-55 Cel

DUAL

R-GDFP-F14

5.5 V

2.03 mm

6.29 mm

Not Qualified

4.5 V

13.8 mA

9.21 mm

LS

SN74HC02FN

Texas Instruments

NOR GATE

INDUSTRIAL

J BEND

20

QCCJ

SQUARE

PLASTIC/EPOXY

NO

YES

4

CMOS

2

5

2/6

CHIP CARRIER

LDCC20,.4SQ

115 ns

Gates

1.27 mm

85 Cel

-40 Cel

QUAD

S-PQCC-J20

6 V

Not Qualified

2 V

CD4002BM

Texas Instruments

NOR GATE

MILITARY

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

2

CMOS

4

TUBE

5

5/15

50 pF

SMALL OUTLINE

SOP14,.25

250 ns

6.8 Amp

Gates

1.27 mm

125 Cel

-55 Cel

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

DUAL

R-PDSO-G14

1

18 V

1.75 mm

3.9 mm

Not Qualified

3 V

.03 mA

e4

NOT SPECIFIED

260

8.65 mm

4000/14000/40000

CD74HCT27MG4

Texas Instruments

NOR GATE

MILITARY

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

3

CMOS

3

TUBE

5

5

50 pF

SMALL OUTLINE

SOP14,.25

35 ns

4 Amp

Gates

1.27 mm

125 Cel

-55 Cel

NICKEL PALLADIUM GOLD

DUAL

R-PDSO-G14

1

5.5 V

1.75 mm

3.9 mm

Not Qualified

4.5 V

e4

30

260

8.65 mm

HCT

CD4001BH

Texas Instruments

NOR GATE

MILITARY

NO LEAD

14

DIE

RECTANGULAR

UNSPECIFIED

YES

4

CMOS

2

5

UNCASED CHIP

250 ns

125 Cel

-55 Cel

UPPER

R-XUUC-N14

18 V

Not Qualified

3 V

4000/14000/40000

SN74HCT02DR-00

Texas Instruments

NOR GATE

INDUSTRIAL

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

4

CMOS

2

5

50 pF

SMALL OUTLINE

25 ns

1.27 mm

85 Cel

-40 Cel

DUAL

R-PDSO-G14

5.5 V

1.75 mm

3.9 mm

Not Qualified

4.5 V

8.65 mm

HCT

SNJ54LS27FK

Texas Instruments

NOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

3

TTL

MIL-PRF-38535

3

TUBE

5

5

15 pF

CHIP CARRIER

LCC20,.35SQ

15 ns

.8 Amp

Gates

1.27 mm

125 Cel

-55 Cel

TIN LEAD

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

6.8 mA

e0

8.89 mm

LS

5962-01-085-1456

Texas Instruments

NOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC

NO

NO

TTL

5

5

IN-LINE

DIP14,.3

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-XDIP-T14

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

5962-8761202EA

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

16

DIP

RECTANGULAR

CERAMIC

NO

NO

CMOS

38535Q/M;38534H;883B

3.3/5

50 pF

IN-LINE

DIP16,.3

24 Amp

Gates

2.54 mm

125 Cel

-55 Cel

DUAL

R-XDIP-T16

Not Qualified

SNJ54ALS28FH

Texas Instruments

NOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

4

TTL

38535Q/M;38534H;883B

2

5

5

CHIP CARRIER

LCC20,.35SQ

16 ns

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-XQCC-N20

5.5 V

Not Qualified

4.5 V

NOT SPECIFIED

NOT SPECIFIED

SNJ54L02T-11

Texas Instruments

NOR GATE

MILITARY

FLAT

14

DFP

RECTANGULAR

CERAMIC, GLASS-SEALED

YES

4

TTL

2

5

50 pF

FLATPACK

60 ns

125 Cel

-55 Cel

DUAL

R-GDFP-F14

5.5 V

Not Qualified

4.5 V

2.6 mA

TTL/H/L

SN54ALS805J

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

20

DIP

RECTANGULAR

CERAMIC

NO

NO

TTL

IN-LINE

DIP20,.3

12 Amp

Gates

2.54 mm

125 Cel

-55 Cel

DUAL

R-XDIP-T20

Not Qualified

SNJ54HC02W

Texas Instruments

NOR GATE

MILITARY

FLAT

14

DFP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

YES

4

CMOS

MIL-PRF-38535

2

TUBE

5

2/6

50 pF

FLATPACK

FL14,.3

135 ns

4 Amp

Gates

1.27 mm

125 Cel

-55 Cel

TIN LEAD

DUAL

R-GDFP-F14

6 V

2.03 mm

5.97 mm

Not Qualified

2 V

.04 mA

e0

9.21 mm

HC

CD74HCT02EE4

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

4

CMOS

2

TUBE

5

5

50 pF

IN-LINE

DIP14,.3

32 ns

4 Amp

Gates

2.54 mm

125 Cel

-55 Cel

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

DUAL

R-PDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

.04 mA

e4

NOT SPECIFIED

NOT SPECIFIED

19.305 mm

HCT

SNJ5427J-00

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

3

TTL

3

5

15 pF

IN-LINE

11 ns

2.54 mm

125 Cel

-55 Cel

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

26 mA

19.56 mm

TTL/H/L

SN74LS33FN3

Texas Instruments

NOR GATE

COMMERCIAL

J BEND

20

QCCJ

SQUARE

PLASTIC/EPOXY

NO

YES

4

TTL

2

5

5

CHIP CARRIER

LDCC20,.4SQ

32 ns

Gates

1.27 mm

70 Cel

OPEN-COLLECTOR

0 Cel

QUAD

S-PQCC-J20

5.25 V

4.75 V

JM38510/16201BDA

Texas Instruments

NOR GATE

MILITARY

FLAT

14

DFP

RECTANGULAR

CERAMIC, GLASS-SEALED

YES

4

TTL

2

5

150 pF

FLATPACK

18 ns

1.27 mm

125 Cel

-55 Cel

DUAL

R-GDFP-F14

5.5 V

2.03 mm

6.29 mm

Not Qualified

4.5 V

57 mA

9.21 mm

TTL/H/L

SN74F27NSRE4

Texas Instruments

NOR GATE

COMMERCIAL

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

3

TTL

3

TR

5

5

SMALL OUTLINE

SOP14,.3

5.5 ns

20 Amp

Gates

1.27 mm

70 Cel

0 Cel

NICKEL PALLADIUM GOLD

DUAL

R-PDSO-G14

1

5.5 V

2 mm

5.3 mm

Not Qualified

4.5 V

12 mA

e4

30

260

10.2 mm

F/FAST

SNJ54L02T-03

Texas Instruments

NOR GATE

MILITARY

FLAT

14

DFP

RECTANGULAR

CERAMIC, GLASS-SEALED

YES

4

TTL

2

5

50 pF

FLATPACK

60 ns

125 Cel

-55 Cel

DUAL

R-GDFP-F14

5.5 V

Not Qualified

4.5 V

2.6 mA

TTL/H/L

CD4001BMN

Texas Instruments

NOR GATE

MILITARY

DIP

4

CMOS

2

5

250 ns

2.54 mm

125 Cel

-55 Cel

15 V

5.08 mm

7.62 mm

3 V

19.18 mm

4000/14000/40000

SN74S260N-10

Texas Instruments

NOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

2

TTL

5

5

15 pF

IN-LINE

6 ns

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.25 V

5.08 mm

7.62 mm

Not Qualified

4.75 V

45 mA

19.305 mm

S

5962-89736022A

Texas Instruments

NOR GATE

MILITARY

14

CERAMIC, METAL-SEALED COFIRED

3

CMOS

3

4.5

FLATPACK

145 ns

125 Cel

-55 Cel

DUAL

6 V

Not Qualified

2 V

HC/UH

SN74LS28D3

Texas Instruments

NOR GATE

COMMERCIAL

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

TTL

5

5

SMALL OUTLINE

SOP14,.25

Gates

1.27 mm

70 Cel

0 Cel

DUAL

R-PDSO-G14

5962-87610022X

Texas Instruments

NOR GATE

MILITARY

14

CERAMIC, METAL-SEALED COFIRED

3

CMOS

3

4.5

FLATPACK

145 ns

125 Cel

-55 Cel

DUAL

6 V

Not Qualified

2 V

HC/UH

CD4025BM

Texas Instruments

NOR GATE

MILITARY

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

3

CMOS

3

TUBE

5

5/15

50 pF

SMALL OUTLINE

SOP14,.25

250 ns

6.8 Amp

Gates

1.27 mm

125 Cel

-55 Cel

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

DUAL

R-PDSO-G14

1

18 V

1.75 mm

3.9 mm

Not Qualified

3 V

.03 mA

e4

NOT SPECIFIED

260

8.65 mm

4000/14000/40000

SN54ALS805AFK

Texas Instruments

NOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

6

TTL

2

5

50 pF

CHIP CARRIER

LCC20,.35SQ

9 ns

12 Amp

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

14 mA

IOH = 12MA @ VOH = 2V; IOL = 12MA @ VOL = 0.4V

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

ALS

CD4025AFB

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC

NO

NO

3

CMOS

38535Q/M;38534H;883B

3

5

5/15

50 pF

IN-LINE

DIP14,.3

250 ns

.56 Amp

Gates

2.54 mm

125 Cel

-55 Cel

DUAL

R-XDIP-T14

18 V

Not Qualified

3 V

CD74ACT02M96G4

Texas Instruments

NOR GATE

MILITARY

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

4

CMOS

2

TR

5

5

50 pF

SMALL OUTLINE

SOP14,.25

12.2 ns

24 Amp

Gate

1.27 mm

125 Cel

-55 Cel

NICKEL PALLADIUM GOLD

DUAL

R-PDSO-G14

1

5.5 V

1.75 mm

3.9 mm

Not Qualified

4.5 V

e4

30

260

8.65 mm

ACT

5962-01-248-0252

Texas Instruments

NOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

TTL

5

5

IN-LINE

DIP14,.3

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

SN74S02DR

Texas Instruments

NOR GATE

COMMERCIAL

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

4

TTL

2

TR

5

5

15 pF

SMALL OUTLINE

SOP14,.25

5.5 ns

20 Amp

Gates

1.27 mm

70 Cel

0 Cel

DUAL

R-PDSO-G14

5.25 V

1.75 mm

3.9 mm

Not Qualified

4.75 V

45 mA

NOT SPECIFIED

NOT SPECIFIED

8.65 mm

S

SN74LS27N-10

Texas Instruments

NOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

3

TTL

3

5

15 pF

IN-LINE

15 ns

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.25 V

5.08 mm

7.62 mm

Not Qualified

4.75 V

6.8 mA

19.305 mm

LS

SN74LV02APWLE

Texas Instruments

NOR GATE

INDUSTRIAL

GULL WING

14

TSSOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

4

CMOS

2

TR

2.5

3.3

50 pF

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

TSSOP14,.25

19 ns

6 Amp

Gates

.65 mm

85 Cel

-40 Cel

DUAL

R-PDSO-G14

5.5 V

1.2 mm

4.4 mm

Not Qualified

2 V

NOT SPECIFIED

NOT SPECIFIED

5 mm

LV/LV-A/LVX/H

SN54ALS1002FH

Texas Instruments

NOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

4

TTL

2

5

5

CHIP CARRIER

LCC20,.35SQ

10 ns

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-XQCC-N20

5.5 V

Not Qualified

4.5 V

NOT SPECIFIED

NOT SPECIFIED

SN5423J

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

16

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

2

TTL

4

5

15 pF

IN-LINE

DIP16,.3

22 ns

Gates

2.54 mm

125 Cel

-55 Cel

DUAL

R-GDIP-T16

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

19 mA

STROBED O/P'S; EXPANDABLE

NOT SPECIFIED

NOT SPECIFIED

19.56 mm

TTL/H/L

SN74ALS02AN

Texas Instruments

NOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

4

TTL

2

TUBE

5

5

50 pF

IN-LINE

DIP14,.3

12 ns

8 Amp

Gates

2.54 mm

70 Cel

0 Cel

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

DUAL

R-PDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

4 mA

e4

NOT SPECIFIED

NOT SPECIFIED

19.305 mm

ALS

SN74LS28J-00

Texas Instruments

NOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

4

TTL

2

5

45 pF

IN-LINE

24 ns

2.54 mm

70 Cel

0 Cel

DUAL

R-GDIP-T14

5.25 V

5.08 mm

7.62 mm

Not Qualified

4.75 V

13.8 mA

19.56 mm

LS

SN74LV02ADG4

Texas Instruments

NOR GATE

AUTOMOTIVE

GULL WING

14

SOP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

4

CMOS

2

TUBE

2.5

3.3

50 pF

SMALL OUTLINE

SOP14,.25

19 ns

6 Amp

Gates

1.27 mm

125 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

R-PDSO-G14

1

5.5 V

1.75 mm

3.9 mm

Not Qualified

2 V

e4

30

260

8.65 mm

LV/LV-A/LVX/H

SN74AS1036FN-00

Texas Instruments

NOR GATE

COMMERCIAL

J BEND

20

QCCJ

SQUARE

PLASTIC/EPOXY

YES

4

TTL

2

5

50 pF

CHIP CARRIER

4 ns

1.27 mm

70 Cel

0 Cel

QUAD

S-PQCC-J20

5.5 V

4.57 mm

8.9662 mm

Not Qualified

4.5 V

23 mA

8.9662 mm

AS

Logic Gates

Logic gates are electronic circuits that perform basic logical operations on one or more inputs to produce a single output. They are the building blocks of digital circuits and are used to implement digital logic functions, such as AND, OR, NOT, XOR, and NAND.

Logic gates are designed using various technologies, including transistor-transistor logic (TTL), complementary metal-oxide-semiconductor (CMOS), and field-programmable gate arrays (FPGAs). They can be classified into three main types based on their operation: combinational logic gates, sequential logic gates, and programmable logic gates.

Combinational logic gates are logic gates that produce an output based solely on the current input values. These gates include the AND gate, OR gate, NOT gate, XOR gate, and NAND gate. The output of a combinational logic gate depends on the input values and the logic function implemented by the gate.

Sequential logic gates are logic gates that have memory elements and can store information. These gates include the SR flip-flop, D flip-flop, JK flip-flop, and T flip-flop. The output of a sequential logic gate depends on the current input values and the previous state of the gate.

Programmable logic gates are logic gates that can be programmed to implement different logic functions. These gates include programmable logic arrays (PLAs), programmable array logic (PALs), and field-programmable gate arrays (FPGAs). Programmable logic gates can be reprogrammed to adapt to changing system requirements.

Logic gates are used in various applications, including digital signal processing, control systems, and memory systems. They are essential components of digital systems and can be found in many electronic devices, such as computers, mobile phones, and digital cameras.