Interface - I/O Expanders

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I/O Expanders

Diodes Incorporated I/O Expanders provide up to 16-bits of General Purpose Input/Output (GPIO) expansion for I²C-bus/SMBus applications. These expanders include up to two 8-bit registers to configure the input and output. Diodes Incorporated I/O expanders also include up to two dedicated 8-bit registers to configure the polarity. The data for each input or output is kept in the corresponding input port or output port registers. These registers can be read by the system master. The I/O expanders feature high driving capability, low power supply, individual I/O configuration, 5V tolerance, and smaller packaging. These expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, pushbuttons, LEDs, and fans.

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Part #

Interface - I/O Expanders 16-bit I2C-bus and SMBus I/O port

PI4IOE5V9555ZDEX
Diodes Incorporated
1: $2.04
8,985In Stock

Mfr. Part #
PI4IOE5V9555ZDEX

Mouser Part #
729-PI4IOE5V9555ZDEX

Diodes Incorporated

Interface - I/O Expanders 16-bit I2C-bus and SMBus I/O port

Learn More

Datasheet

8,985In Stock

Cut Tape

$2.04

$1.50

$1.32

$1.19

Reel

$1.01

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

PIO4IO

SMD/SMT

TQFN-24

I2C, Serial, SMBus

8 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 16-bit I2C and SMBus Port

PI4IOE5V9535ZDEX
Diodes Incorporated
1: $2.12
21,164In Stock

Mfr. Part #
PI4IOE5V9535ZDEX

Mouser Part #
729-PI4IOE5V9535ZDEX

Diodes Incorporated

Interface - I/O Expanders 16-bit I2C and SMBus Port

Learn More

Datasheet

21,164In Stock

Cut Tape

$2.12

$1.56

$1.40

$1.25

$1.17

Reel

$1.17

MouseReel Available

Min.: 1
Mult.: 1
Max.: 370

: 3,500

PIO4IO

SMD/SMT

TQFN-24

I2C, Serial, SMBus

16 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 48-bit I2C-bus I/O Expander

PI4IOE5V96248ZLEX
Diodes Incorporated
1: $3.86
3,343In Stock
3,000Expected 2026-08-14

Mfr. Part #
PI4IOE5V96248ZLEX

Mouser Part #
729-I4IOE5V96248ZLEX

Diodes Incorporated

Interface - I/O Expanders 48-bit I2C-bus I/O Expander

Learn More

Datasheet

3,343In Stock

3,000Expected 2026-08-14

Cut Tape

$3.86

$2.88

$2.64

$2.36

Reel

$2.36

MouseReel Available

Min.: 1
Mult.: 1
Max.: 240

: 3,000

PIO4IO

SMD/SMT

TQFN-56

I2C, Serial

48 I/O

With Interrupt

2.3 V

5.5 V

1 MHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 16-bit I2C and SMBus Port

PI4IOE5V9535LEX
Diodes Incorporated
1: $1.89
3,727In Stock

Mfr. Part #
PI4IOE5V9535LEX

Mouser Part #
729-PI4IOE5V9535LEX

Diodes Incorporated

Interface - I/O Expanders 16-bit I2C and SMBus Port

Learn More

Datasheet

3,727In Stock

Cut Tape

$1.89

$1.37

$1.24

$1.10

$1.03

Reel

$1.03

MouseReel Available

Min.: 1
Mult.: 1
Max.: 300

: 3,000

PIO4IO

SMD/SMT

TSSOP-24

I2C, Serial, SMBus

16 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 4-bit I2C and SMBus low power I/O port

PI4IOE5V9536UEX
Diodes Incorporated
1: $1.73
3,540In Stock

Mfr. Part #
PI4IOE5V9536UEX

Mouser Part #
729-PI4IOE5V9536UEX

Diodes Incorporated

Interface - I/O Expanders 4-bit I2C and SMBus low power I/O port

Learn More

Datasheet

3,540In Stock

Cut Tape

$1.73

$1.25

$1.13

$1.00

Reel

$1.00

MouseReel Available

Min.: 1
Mult.: 1
Max.: 240

: 2,500

PIO4IO

SMD/SMT

MSOP-8

I2C, Serial, SMBus

4 I/O

Without Interrupt

2.3 V

5.5 V

1 MHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 8-bit I2C and SMBus IO Port

PI4IOE5V9554ALEX
Diodes Incorporated
1: $1.64
4,568In Stock

Mfr. Part #
PI4IOE5V9554ALEX

Mouser Part #
729-PI4IOE5V9554ALEX

Diodes Incorporated

Interface - I/O Expanders 8-bit I2C and SMBus IO Port

Learn More

Datasheet

4,568In Stock

Cut Tape

$1.64

$1.19

$1.07

$0.949

$0.89

Reel

$0.89

MouseReel Available

Min.: 1
Mult.: 1
Max.: 290

: 2,500

PIO4IO

SMD/SMT

TSSOP-16

I2C, Serial, SMBus

8 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 8-bit I2C and SMBus IO Port

PI4IOE5V9554LEX
Diodes Incorporated
1: $1.79
3,531In Stock

Mfr. Part #
PI4IOE5V9554LEX

Mouser Part #
729-PI4IOE5V9554LEX

Diodes Incorporated

Interface - I/O Expanders 8-bit I2C and SMBus IO Port

Learn More

Datasheet

3,531In Stock

Cut Tape

$1.79

$1.30

$1.17

$1.04

Reel

$0.868

View

Min.: 1
Mult.: 1

: 2,500

PIO4IO

SMD/SMT

TSSOP-16

I2C, Serial, SMBus

8 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape

4 kV

Interface - I/O Expanders 16-bit I2C and SMBus low power I/O port

PI4IOE5V9539LE
Diodes Incorporated
1: $1.90
41In Stock

Mfr. Part #
PI4IOE5V9539LE

Mouser Part #
729-PI4IOE5V9539LE

Diodes Incorporated

Interface - I/O Expanders 16-bit I2C and SMBus low power I/O port

Learn More

Datasheet

41In Stock

$1.90

$1.38

$1.15

Min.: 1
Mult.: 1

PIO4IO

SMD/SMT

TSSOP-24

I2C, Serial, SMBus

16 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Tube

Interface - I/O Expanders 16-bit I2C and SMBus low power I/O port

PI4IOE5V9539LEX
Diodes Incorporated
1: $1.90
802In Stock
3,000Expected 2026-08-24

Mfr. Part #
PI4IOE5V9539LEX

Mouser Part #
729-PI4IOE5V9539LEX

Diodes Incorporated

Interface - I/O Expanders 16-bit I2C and SMBus low power I/O port

Learn More

Datasheet

802In Stock

3,000Expected 2026-08-24

Cut Tape

$1.90

$1.38

$1.25

$1.11

Reel

$0.923

View

Min.: 1
Mult.: 1

: 3,000

PIO4IO

SMD/SMT

TSSOP-24

I2C, Serial, SMBus

16 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape

Interface - I/O Expanders 16-bit I2C and SMBus low power I/O port

PI4IOE5V9539ZDEX
Diodes Incorporated
1: $1.90
218In Stock
7,000On Order

Mfr. Part #
PI4IOE5V9539ZDEX

Mouser Part #
729-PI4IOE5V9539ZDEX

Diodes Incorporated

Interface - I/O Expanders 16-bit I2C and SMBus low power I/O port

Learn More

Datasheet

218In Stock

7,000On Order

Cut Tape

$1.90

$1.38

$1.25

$1.11

Reel

$0.919

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

PIO4IO

SMD/SMT

TQFN-24

I2C, Serial, SMBus

16 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 8-bit I2C and SMBus IO Port

PI4IOE5V9554LE
Diodes Incorporated
1: $1.86
111In Stock

Mfr. Part #
PI4IOE5V9554LE

Mouser Part #
729-PI4IOE5V9554LE

Diodes Incorporated

Interface - I/O Expanders 8-bit I2C and SMBus IO Port

Learn More

Datasheet

111In Stock

$1.86

$1.35

$1.09

$1.03

View

Min.: 1
Mult.: 1

PIO4IO

SMD/SMT

TSSOP-16

I2C, Serial, SMBus

8 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Tube

4 kV

Interface - I/O Expanders 16-bit I2C-bus and SMBus I/O port

PI4IOE5V9555LEX
Diodes Incorporated
1: $1.84
858In Stock

Mfr. Part #
PI4IOE5V9555LEX

Mouser Part #
729-PI4IOE5V9555LEX

Diodes Incorporated

Interface - I/O Expanders 16-bit I2C-bus and SMBus I/O port

Learn More

Datasheet

858In Stock

Cut Tape

$1.84

$1.34

$1.22

$1.11

Reel

$0.894

View

Min.: 1
Mult.: 1

: 3,000

PIO4IO

SMD/SMT

TSSOP-24

I2C, Serial, SMBus

8 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Reel, Cut Tape

4 kV

Interface - I/O Expanders 24-bit I2C-bus I/O Expander

PI4IOE5V96224ZLEX
Diodes Incorporated
1: $3.18
13,250On Order

Mfr. Part #
PI4IOE5V96224ZLEX

Mouser Part #
729-I4IOE5V96224ZLEX

Diodes Incorporated

Interface - I/O Expanders 24-bit I2C-bus I/O Expander

Learn More

Datasheet

13,250On Order

Cut Tape

$3.18

$2.36

$2.16

$1.93

$1.81

Reel

$1.64

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

PIO4IO

SMD/SMT

TQFN-32

I2C, Serial

24 I/O

With Interrupt

2.3 V

5.5 V

1 MHz

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 8-bit I2C and SMBus low power I/O port

PI4IOE5V9538LE
Diodes Incorporated
1: $1.64
10,944Factory Stock Available

Mfr. Part #
PI4IOE5V9538LE

Mouser Part #
729-PI4IOE5V9538LE

Diodes Incorporated

Interface - I/O Expanders 8-bit I2C and SMBus low power I/O port

Learn More

Datasheet

10,944Factory Stock Available

More Info Available

$1.64

$1.19

$0.953

$0.935

View

Min.: 1
Mult.: 1

PIO4IO

SMD/SMT

TSSOP-16

I2C, Serial, SMBus

8 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Tube

4 kV

Interface - I/O Expanders 16-bit I2C-bus and SMBus I/O port

PI4IOE5V9555LE
Diodes Incorporated
1: $1.99
Non-Stocked Lead-Time 35 Weeks

Mfr. Part #
PI4IOE5V9555LE

Mouser Part #
729-PI4IOE5V9555LE

Diodes Incorporated

Interface - I/O Expanders 16-bit I2C-bus and SMBus I/O port

Learn More

Datasheet

Non-Stocked Lead-Time 35 Weeks

$1.99

$1.44

$1.20

$1.15

Min.: 1
Mult.: 1

PIO4IO

SMD/SMT

TSSOP-24

I2C, Serial, SMBus

8 I/O

With Interrupt

2.3 V

5.5 V

400 kHz

- 40 C

+ 85 C

Tube

I/O Expanders

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