Interface - I/O Expanders

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I2C General Purpose I/O Expanders

NXP Semiconductors I²C General Purpose I/O Expanders provide GPIO expansion for most microprocessor families, allowing designers to save the GPIOs on microprocessors for other important functions. Designers can utilize the microprocessor GPIOs for important functions and use the I/O expander for other duties, including system monitoring, ACPI power switches, sensors, push buttons, LEDs, fans, and more. NXP GPIO expanders are ideal for adding fan and LED control to systems. They are also ideal for monitoring system functions and accepting push-button inputs.

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Part #

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in VFBGA24 package

PCA6416AEVJ
NXP Semiconductors
1: $1.693
4.828In Stock

Mfr. Part #
PCA6416AEVJ

Mouser Part #
771-PCA6416AEVJ

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in VFBGA24 package

Learn More

Datasheet

4.828In Stock

Cut Tape

$1.693

$1.241

$1.104

$997

View

Reel

$838

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCA6416

SMD/SMT

VFBGA-24

I2C, Serial, SMBus

16 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HWQFN24 package

PCA6416AHF,128
NXP Semiconductors
1: $1.925
19.473In Stock

Mfr. Part #
PCA6416AHF,128

Mouser Part #
771-PCA6416AHF,128

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HWQFN24 package

Learn More

Datasheet

19.473In Stock

Cut Tape

$1.925

$1.409

$1.283

$1.136

View

Reel

$942

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCA6416

SMD/SMT

HWQFN-24

I2C, Serial, SMBus

16 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt, Low Voltage version of PCA9535 in TSSOP24 package

PCA9535APW,118
NXP Semiconductors
1: $1.946
19.956In Stock
12.500Expected 3/1/2027

Mfr. Part #
PCA9535APW,118

Mouser Part #
771-PCA9535APW,118

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt, Low Voltage version of PCA9535 in TSSOP24 package

Learn More

Datasheet

19.956In Stock

12.500Expected 3/1/2027

Cut Tape

$1.946

$1.430

$1.304

$1.157

Reel

$1.012

View

MouseReel Available

Min.: 1
Mult.: 1

: 2.500

PCA9535A

SMD/SMT

TSSOP-24

I2C, Serial, SMBus

16 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in HVQFN16 package

PCAL6408ABSHP
NXP Semiconductors
1: $1.409
64.648In Stock

Mfr. Part #
PCAL6408ABSHP

Mouser Part #
771-PCAL6408ABSHP

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in HVQFN16 package

Learn More

Datasheet

64.648In Stock

Cut Tape

$1.409

$1.026

$930

$823

View

Reel

$676

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCAL6408A

SMD/SMT

HVQFN-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in TSSOP16 package

PCAL6408APWJ
NXP Semiconductors
1: $1.409
54.095In Stock

Mfr. Part #
PCAL6408APWJ

Mouser Part #
771-PCAL6408APWJ

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in TSSOP16 package

Learn More

Datasheet

54.095In Stock

Cut Tape

$1.409

$1.026

$930

$823

Reel

$692

View

MouseReel Available

Min.: 1
Mult.: 1

: 2.500

PCAL6408A

SMD/SMT

TSSOP-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in HWQFN24 package

PCAL6416AHF,128
NXP Semiconductors
1: $1.493
48.029In Stock
60.000Expected 8/24/2026

Mfr. Part #
PCAL6416AHF,128

Mouser Part #
771-PCAL6416AHF,128

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in HWQFN24 package

Learn More

Datasheet

48.029In Stock

60.000Expected 8/24/2026

Cut Tape

$1.493

$1.094

$977

$875

View

Reel

$721

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCAL6416A

SMD/SMT

HWQFN-24

I2C, Serial, SMBus

16 I/O

With Interrupt

1.65 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Agile I/O in HWQFN24 package

PCAL9535AHF,128
NXP Semiconductors
1: $2.377
29.902Expected 10/6/2026

Mfr. Part #
PCAL9535AHF,128

Mouser Part #
771-PCAL9535AHF,128

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Agile I/O in HWQFN24 package

Learn More

Datasheet

29.902Expected 10/6/2026

Cut Tape

$2.377

$1.693

$1.588

$1.441

View

Reel

$1.178

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCAL9535A

SMD/SMT

HWQFN-24

I2C, Serial

16 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Reset and Agile I/O in HWQFN24 package

PCAL9539AHF,128
NXP Semiconductors
1: $2.640
17.386In Stock

Mfr. Part #
PCAL9539AHF,128

Mouser Part #
771-PCAL9539AHF,128

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Reset and Agile I/O in HWQFN24 package

Learn More

Datasheet

17.386In Stock

Cut Tape

$2.640

$1.956

$1.788

$1.599

View

Reel

$1.336

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCAL9539A

SMD/SMT

HWQFN-24

I2C, Serial, SMBus

16 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in TSSOP16 package

PCA6408APW,118
NXP Semiconductors
1: $1.472
2.904In Stock

Mfr. Part #
PCA6408APW,118

Mouser Part #
771-PCA6408APW,118

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in TSSOP16 package

Learn More

Datasheet

2.904In Stock

Cut Tape

$1.472

$1.083

$958

$867

Reel

$649

View

MouseReel Available

Min.: 1
Mult.: 1

: 2.500

PCA6408A

SMD/SMT

TSSOP-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in TSSOP24 package

PCA6416APW,118
NXP Semiconductors
1: $1.693
6.144In Stock

Mfr. Part #
PCA6416APW,118

Mouser Part #
771-PCA6416APW118

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in TSSOP24 package

Learn More

Datasheet

6.144In Stock

Cut Tape

$1.693

$1.241

$1.125

$997

View

Reel

$854

MouseReel Available

Min.: 1
Mult.: 1

: 2.500

PCA6416

SMD/SMT

TSSOP-24

I2C, Serial, SMBus

16 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt, Low Voltage version of PCA9535 in HWQFN24 package

PCA9535AHF,128
NXP Semiconductors
1: $2.166
12.475In Stock

Mfr. Part #
PCA9535AHF,128

Mouser Part #
771-PCA9535AHF,128

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt, Low Voltage version of PCA9535 in HWQFN24 package

Learn More

Datasheet

12.475In Stock

Cut Tape

$2.166

$1.672

$1.525

$1.325

View

Reel

$1.094

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCA9535A

SMD/SMT

HWQFN-24

I2C, Serial, SMBus

16 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 8-bit I2C-bus I/O Expander with Interrupt and Reset in HVQFN16 package

PCA9538ABSHP
NXP Semiconductors
1: $1.935
10.586In Stock
18.000Expected 8/27/2026

Mfr. Part #
PCA9538ABSHP

Mouser Part #
771-PCA9538ABSHP

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus I/O Expander with Interrupt and Reset in HVQFN16 package

Learn More

Datasheet

10.586In Stock

18.000Expected 8/27/2026

Cut Tape

$1.935

$1.420

$1.294

$1.157

View

Reel

$949

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCA9538A

SMD/SMT

HVQFN-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 8-bit I2C-bus I/O Expander with Interrupt and Reset in TSSOP16 package

PCA9538APWJ
NXP Semiconductors
1: $1.925
2.705In Stock
5.000Expected 10/8/2026

Mfr. Part #
PCA9538APWJ

Mouser Part #
771-PCA9538APWJ

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus I/O Expander with Interrupt and Reset in TSSOP16 package

Learn More

Datasheet

2.705In Stock

5.000Expected 10/8/2026

Cut Tape

$1.925

$1.409

$1.283

$1.146

Reel

$969

View

MouseReel Available

Min.: 1
Mult.: 1

: 2.500

PCA9538A

SMD/SMT

TSSOP-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Reset in HWQFN24 package

PCA9539AHF,128
NXP Semiconductors
1: $2.188
13.460In Stock

Mfr. Part #
PCA9539AHF,128

Mouser Part #
771-PCA9539AHF,128

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Reset in HWQFN24 package

Learn More

Datasheet

13.460In Stock

Cut Tape

$2.188

$1.609

$1.472

$1.315

View

Reel

$1.083

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCA9539A

SMD/SMT

HWQFN-24

I2C, Serial, SMBus

16 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554B in TSSOP16 package

PCA9554CPWJ
NXP Semiconductors
1: $1.599
3.341In Stock

Mfr. Part #
PCA9554CPWJ

Mouser Part #
771-PCA9554CPWJ

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554B in TSSOP16 package

Learn More

Datasheet

3.341In Stock

Cut Tape

$1.599

$1.167

$1.050

$930

Reel

$785

View

MouseReel Available

Min.: 1
Mult.: 1

: 2.500

PCA9554C

SMD/SMT

TSSOP-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt in HWQFN24 package

PCA9555AHF,128
NXP Semiconductors
1: $2.188
4.206In Stock
42.000On Order

Mfr. Part #
PCA9555AHF,128

Mouser Part #
771-PCA9555AHF,128

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt in HWQFN24 package

Learn More

Datasheet

4.206In Stock

42.000On Order

Cut Tape

$2.188

$1.609

$1.472

$1.315

View

Reel

$1.083

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCA9555A

SMD/SMT

HWQFN-24

I2C, Serial, SMBus

16 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in X2QFN16 package

PCAL6408AEX1Z
NXP Semiconductors
1: $1.409
9.986In Stock

Mfr. Part #
PCAL6408AEX1Z

Mouser Part #
771-PCAL6408AEX1Z

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in X2QFN16 package

Learn More

Datasheet

9.986In Stock

Cut Tape

$1.409

$1.026

$930

$823

View

Reel

$687

MouseReel Available

Min.: 1
Mult.: 1

: 5.000

PCAL6408A

SMD/SMT

X2QFN-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in XQFN16 package

PCAL6408AHKX
NXP Semiconductors
1: $1.399
22.177In Stock

Mfr. Part #
PCAL6408AHKX

Mouser Part #
771-PCAL6408AHKX

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in XQFN16 package

Learn More

Datasheet

22.177In Stock

Cut Tape

$1.399

$1.013

$917

$810

View

Reel

$660

MouseReel Available

Min.: 1
Mult.: 1

: 4.000

PCAL6408A

SMD/SMT

XQFN-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in VFBGA24 package

PCAL6416AEVJ
NXP Semiconductors
1: $1.525
3.759In Stock

Mfr. Part #
PCAL6416AEVJ

Mouser Part #
771-PCAL6416AEVJ

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in VFBGA24 package

Learn More

Datasheet

3.759In Stock

Cut Tape

$1.525

$1.115

$1.009

$894

View

Reel

$738

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCAL6416A

SMD/SMT

VFBGA-24

I2C, Serial, SMBus

16 I/O

With Interrupt

1.65 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt and Agile I/O in HWQFN24 package

PCAL9555AHF,128
NXP Semiconductors
1: $2.145
13.266In Stock
18.000Expected 1/11/2027

Mfr. Part #
PCAL9555AHF,128

Mouser Part #
771-PCAL9555AHF,128

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt and Agile I/O in HWQFN24 package

Learn More

Datasheet

13.266In Stock

18.000Expected 1/11/2027

Cut Tape

$2.145

$1.588

$1.441

$1.283

View

Reel

$1.062

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCAL9555A

SMD/SMT

HWQFN-24

I2C, Serial

16 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HVQFN16 package

PCA6408ABSHP
NXP Semiconductors
1: $1.325
1.819In Stock
6.000Expected 11/2/2026

Mfr. Part #
PCA6408ABSHP

Mouser Part #
771-PCA6408ABSHP

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HVQFN16 package

Learn More

Datasheet

1.819In Stock

6.000Expected 11/2/2026

Cut Tape

$1.325

$960

$869

$769

View

Reel

$658

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCA6408A

SMD/SMT

HVQFN-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in XQFN16 package

PCA6408AHKX
NXP Semiconductors
1: $1.136
9.278In Stock
40.000Expected 9/14/2026

Mfr. Part #
PCA6408AHKX

Mouser Part #
771-PCA6408AHKX

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in XQFN16 package

Learn More

Datasheet

9.278In Stock

40.000Expected 9/14/2026

Cut Tape

$1.136

$816

$737

$650

View

Reel

$583

MouseReel Available

Min.: 1
Mult.: 1

: 4.000

PCA6408A

SMD/SMT

XQFN-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554C in TSSOP16 package

PCA9554BPWJ
NXP Semiconductors
1: $1.767
1.222In Stock
12.500Expected 10/8/2026

Mfr. Part #
PCA9554BPWJ

Mouser Part #
771-PCA9554BPWJ

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554C in TSSOP16 package

Learn More

Datasheet

1.222In Stock

12.500Expected 10/8/2026

Cut Tape

$1.767

$1.294

$1.178

$1.037

View

Reel

$823

MouseReel Available

Min.: 1
Mult.: 1

: 2.500

PCA9554B

SMD/SMT

TSSOP-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554B in HVQFN16 package

PCA9554CBSHP
NXP Semiconductors
1: $1.767
737In Stock
6.000Expected 5/3/2027

Mfr. Part #
PCA9554CBSHP

Mouser Part #
771-PCA9554CBSHP

NXP Semiconductors

Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554B in HVQFN16 package

Learn More

Datasheet

737In Stock

6.000Expected 5/3/2027

Cut Tape

$1.767

$1.294

$1.178

$1.037

View

Reel

$848

MouseReel Available

Min.: 1
Mult.: 1

: 6.000

PCA9554C

SMD/SMT

HVQFN-16

I2C, Serial, SMBus

8 I/O

With Interrupt

1.65 V

5.5 V

100 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in TSSOP24 package

PCAL6416APW,118
NXP Semiconductors
1: $1.546
176In Stock
27.500On Order

Mfr. Part #
PCAL6416APW,118

Mouser Part #
771-PCAL6416APW118

NXP Semiconductors

Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in TSSOP24 package

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Datasheet

176In Stock

27.500On Order

Cut Tape

$1.546

$1.125

$1.009

$904

View

Reel

$798

MouseReel Available

Min.: 1
Mult.: 1

: 2.500

PCAL6416A

SMD/SMT

TSSOP-24

I2C, Serial, SMBus

16 I/O

With Interrupt

1.65 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

2 kV

I2C General Purpose I/O Expanders

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