GULL WING Parallel I/O Ports 2,400+

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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

935277415118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

8

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE

2.3 V

85 Cel

-40 Cel

DUAL

1

1.75 mm

3.9 mm

4.9 mm

CMOS

3 V

1.27 mm

R-PDSO-G8

4

935275049518

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE

2.3 V

85 Cel

-40 Cel

DUAL

1

2.65 mm

7.5 mm

10.3 mm

CMOS

3 V

1.27 mm

R-PDSO-G16

8

935285273112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

2

1.1 mm

4.4 mm

7.8 mm

CMOS

3 V

.65 mm

R-PDSO-G24

16

935278614512

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

56

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

2

1.2 mm

6.1 mm

14 mm

CMOS

3.3 V

.5 mm

R-PDSO-G56

8

935270674112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.75 mm

3.9 mm

9.9 mm

CMOS

1.27 mm

R-PDSO-G16

1

Not Qualified

e4

8

935282747118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.1 mm

4.4 mm

5 mm

CMOS

3 V

.65 mm

R-PDSO-G16

8

935276544118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

20

LSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

6 V

SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

2.5 V

85 Cel

-40 Cel

DUAL

1

1.5 mm

4.4 mm

6.5 mm

CMOS

5 V

.65 mm

R-PDSO-G20

8

935275051118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.1 mm

4.4 mm

30

260

5 mm

CMOS

3 V

.65 mm

R-PDSO-G16

1

e4

8

PSD301-12B

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

5.5 V

FLATPACK

4.5 V

70 Cel

0 Cel

QUAD

3

16

CMOS

95 mA

5 V

S-PQFP-G52

Not Qualified

19

935262233112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

SSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, SHRINK PITCH

2.5 V

85 Cel

-40 Cel

DUAL

1

2 mm

5.3 mm

NOT SPECIFIED

NOT SPECIFIED

8.2 mm

CMOS

.65 mm

R-PDSO-G24

Not Qualified

16

935276422518

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE

2.3 V

85 Cel

-40 Cel

DUAL

1

2.65 mm

7.5 mm

10.3 mm

CMOS

3 V

1.27 mm

R-PDSO-G16

8

935283491118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

20

LSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.5 mm

4.4 mm

6.5 mm

CMOS

3 V

.65 mm

R-PDSO-G20

8

935269569118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

2

1.1 mm

4.4 mm

7.8 mm

CMOS

3 V

.65 mm

R-PDSO-G24

1

Not Qualified

e4

16

935271534118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

3.6 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.5 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.1 mm

4.4 mm

5 mm

CMOS

3.3 V

.65 mm

R-PDSO-G16

1

Not Qualified

e4

8

PSD312-20IB

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

OTHER

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

5.5 V

FLATPACK

4.5 V

80 Cel

-40 Cel

QUAD

3

8

CMOS

115 mA

5 V

S-PQFP-G52

Not Qualified

19

935269201112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

2 mm

5.3 mm

6.2 mm

CMOS

3 V

.65 mm

R-PDSO-G16

1

Not Qualified

e4

8

PSD301-15B

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

5.5 V

FLATPACK

4.5 V

70 Cel

0 Cel

QUAD

3

16

CMOS

95 mA

5 V

S-PQFP-G52

Not Qualified

19

PSD301-20IB

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

OTHER

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

5.5 V

FLATPACK

4.5 V

80 Cel

-40 Cel

QUAD

3

16

CMOS

115 mA

5 V

S-PQFP-G52

Not Qualified

19

935275672112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

20

LSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

6 V

SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

2.5 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.5 mm

4.4 mm

6.5 mm

CMOS

5 V

.65 mm

R-PDSO-G20

1

Not Qualified

e4

8

935280798512

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

56

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

2

1.2 mm

6.1 mm

14 mm

CMOS

3.3 V

.5 mm

R-PDSO-G56

8

935282715512

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE

2.3 V

85 Cel

-40 Cel

DUAL

1

2.65 mm

7.5 mm

10.3 mm

CMOS

3 V

1.27 mm

R-PDSO-G16

8

935283552112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

SSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

2 mm

5.3 mm

8.2 mm

CMOS

3 V

.65 mm

R-PDSO-G24

16

935269195118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

2.65 mm

7.5 mm

10.3 mm

CMOS

3 V

1.27 mm

R-PDSO-G16

1

Not Qualified

e4

8

935285894118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

8

TSSOP

SQUARE

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.1 mm

3 mm

3 mm

CMOS

3 V

.65 mm

S-PDSO-G8

4

935282735118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.1 mm

4.4 mm

5 mm

CMOS

3 V

.65 mm

R-PDSO-G16

8

935283189112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

20

LSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.5 mm

4.4 mm

6.5 mm

CMOS

3 V

.65 mm

R-PDSO-G20

8

935271535118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

20

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

3.6 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.5 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.1 mm

4.4 mm

6.5 mm

CMOS

3.3 V

.65 mm

R-PDSO-G20

1

Not Qualified

e4

8

935269193118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

2 mm

5.3 mm

6.2 mm

CMOS

3 V

.65 mm

R-PDSO-G16

1

Not Qualified

e4

8

935278326118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

SSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, SHRINK PITCH

2.5 V

85 Cel

-40 Cel

DUAL

2

2 mm

5.3 mm

8.2 mm

CMOS

2.7 V

.65 mm

R-PDSO-G24

16

935283554112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.1 mm

4.4 mm

7.8 mm

CMOS

3 V

.65 mm

R-PDSO-G24

16

935277298518

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

2

1.1 mm

4.4 mm

7.8 mm

CMOS

3 V

.65 mm

R-PDSO-G24

16

935283761118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.1 mm

4.4 mm

5 mm

CMOS

3 V

.65 mm

R-PDSO-G16

8

935269202112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.1 mm

4.4 mm

5 mm

CMOS

3 V

.65 mm

R-PDSO-G16

1

Not Qualified

e4

8

935282743112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.1 mm

4.4 mm

5 mm

CMOS

3 V

.65 mm

R-PDSO-G16

8

935282741518

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE

2.3 V

85 Cel

-40 Cel

DUAL

1

2.65 mm

7.5 mm

10.3 mm

CMOS

3 V

1.27 mm

R-PDSO-G16

8

935276422528

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE

2.3 V

85 Cel

-40 Cel

DUAL

1

2.65 mm

7.5 mm

10.3 mm

CMOS

3 V

1.27 mm

R-PDSO-G16

8

935276771118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

20

LSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.5 mm

4.4 mm

6.5 mm

CMOS

3 V

.65 mm

R-PDSO-G20

8

935275581112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

6 V

SMALL OUTLINE

2.5 V

85 Cel

-40 Cel

DUAL

1

2.65 mm

7.5 mm

10.3 mm

CMOS

5 V

1.27 mm

R-PDSO-G16

Not Qualified

8

935282744118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

20

LSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.5 mm

4.4 mm

6.5 mm

CMOS

3 V

.65 mm

R-PDSO-G20

8

935283558112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

24

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.1 mm

4.4 mm

7.8 mm

CMOS

.65 mm

R-PDSO-G24

18

935283189118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

20

LSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.5 mm

4.4 mm

6.5 mm

CMOS

3 V

.65 mm

R-PDSO-G20

8

935275581118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

6 V

SMALL OUTLINE

2.5 V

85 Cel

-40 Cel

DUAL

1

2.65 mm

7.5 mm

10.3 mm

CMOS

5 V

1.27 mm

R-PDSO-G16

Not Qualified

8

935282736518

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE

2.3 V

85 Cel

-40 Cel

DUAL

1

2.65 mm

7.5 mm

10.3 mm

CMOS

3 V

1.27 mm

R-PDSO-G16

8

935284486112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

56

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

2

1.2 mm

6.1 mm

14 mm

CMOS

3.3 V

.5 mm

R-PDSO-G56

8

935272364118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

20

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

3.6 V

SMALL OUTLINE

2.5 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

2.65 mm

7.5 mm

12.8 mm

CMOS

3.3 V

1.27 mm

R-PDSO-G20

1

Not Qualified

e4

8

935283487118

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

20

LSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

DUAL

1

1.5 mm

4.4 mm

6.5 mm

CMOS

3 V

.65 mm

R-PDSO-G20

8

935275051112

NXP Semiconductors

PARALLEL IO PORT, GENERAL PURPOSE

INDUSTRIAL

GULL WING

16

TSSOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

2.3 V

85 Cel

-40 Cel

NICKEL PALLADIUM GOLD

DUAL

1

1.1 mm

4.4 mm

30

260

5 mm

CMOS

3 V

.65 mm

R-PDSO-G16

1

e4

8

74LVC1284DB,112

NXP Semiconductors

PARALLEL IO PORT, PRINTER INTERFACE

COMMERCIAL

GULL WING

20

SSOP

RECTANGULAR

PLASTIC/EPOXY

YES

3.6 V

SMALL OUTLINE, SHRINK PITCH

3 V

70 Cel

0 Cel

NICKEL PALLADIUM GOLD

DUAL

1

2 mm

5.3 mm

260

7.2 mm

CMOS

3.3 V

.65 mm

R-PDSO-G20

1

Not Qualified

e4

8

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.