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 and SMBus Port

PI4IOE5V9535ZDEX
Diodes Incorporated
1: $1.546
19.400In Stock

Mfr. Part #
PI4IOE5V9535ZDEX

Mouser Part #
729-PI4IOE5V9535ZDEX

Diodes Incorporated

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

Learn More

Datasheet

19.400In Stock

Cut Tape

$1.546

$1.136

$1.024

$910

$855

Reel

$855

MouseReel Available

Min.: 1
Mult.: 1
Max.: 330

: 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 24-bit I2C-bus I/O Expander

PI4IOE5V96224ZLEX
Diodes Incorporated
1: $2.303
4.681In Stock
7.000Expected 8/20/2026

Mfr. Part #
PI4IOE5V96224ZLEX

Mouser Part #
729-I4IOE5V96224ZLEX

Diodes Incorporated

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

Learn More

Datasheet

4.681In Stock

7.000Expected 8/20/2026

Cut Tape

$2.303

$1.704

$1.535

$1.388

View

Reel

$1.262

MouseReel Available

Min.: 1
Mult.: 1
Max.: 3.500

: 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 48-bit I2C-bus I/O Expander

PI4IOE5V96248ZLEX
Diodes Incorporated
1: $2.766
5.448In Stock

Mfr. Part #
PI4IOE5V96248ZLEX

Mouser Part #
729-I4IOE5V96248ZLEX

Diodes Incorporated

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

Learn More

Datasheet

5.448In Stock

Cut Tape

$2.766

$2.061

$1.893

$1.693

Reel

$1.693

MouseReel Available

Min.: 1
Mult.: 1
Max.: 250

: 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: $1.378
2.806In Stock
3.000Expected 8/11/2026

Mfr. Part #
PI4IOE5V9535LEX

Mouser Part #
729-PI4IOE5V9535LEX

Diodes Incorporated

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

Learn More

Datasheet

2.806In Stock

3.000Expected 8/11/2026

Cut Tape

$1.378

$999

$906

$801

Reel

$801

MouseReel Available

Min.: 1
Mult.: 1
Max.: 230

: 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: $1.230
2.609In Stock
2.500Expected 8/11/2026

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

2.609In Stock

2.500Expected 8/11/2026

Cut Tape

$1.230

$888

$803

$710

Reel

$710

MouseReel Available

Min.: 1
Mult.: 1
Max.: 270

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

PI4IOE5V9539LEX
Diodes Incorporated
1: $1.388
3.818In Stock

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

3.818In Stock

Cut Tape

$1.388

$1.009

$915

$810

Reel

$674

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: $1.451
6.310In Stock

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

6.310In Stock

Cut Tape

$1.451

$1.052

$952

$841

$788

Reel

$788

MouseReel Available

Min.: 1
Mult.: 1
Max.: 410

: 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

PI4IOE5V9554ALEX
Diodes Incorporated
1: $1.199
4.172In Stock

Mfr. Part #
PI4IOE5V9554ALEX

Mouser Part #
729-PI4IOE5V9554ALEX

Diodes Incorporated

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

Learn More

Datasheet

4.172In Stock

Cut Tape

$1.199

$868

$785

$693

Reel

$693

MouseReel Available

Min.: 1
Mult.: 1
Max.: 160

: 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 16-bit I2C-bus and SMBus I/O port

PI4IOE5V9555ZDEX
Diodes Incorporated
1: $1.504
5.127In 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

5.127In Stock

Cut Tape

$1.504

$1.104

$998

$886

View

Reel

$814

MouseReel Available

Min.: 1
Mult.: 1
Max.: 650

: 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 low power I/O port

PI4IOE5V9539LE
Diodes Incorporated
1: $1.388
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

$1.388

$1.009

$841

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 8-bit I2C and SMBus IO Port

PI4IOE5V9554LE
Diodes Incorporated
1: $1.357
120In Stock

Mfr. Part #
PI4IOE5V9554LE

Mouser Part #
729-PI4IOE5V9554LE

Diodes Incorporated

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

Learn More

Datasheet

120In Stock

$1.357

$985

$793

$754

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 8-bit I2C and SMBus IO Port

PI4IOE5V9554LEX
Diodes Incorporated
1: $1.304
520In Stock

Mfr. Part #
PI4IOE5V9554LEX

Mouser Part #
729-PI4IOE5V9554LEX

Diodes Incorporated

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

Learn More

Datasheet

520In Stock

Cut Tape

$1.304

$947

$857

$758

$711

Reel

$711

Min.: 1
Mult.: 1
Max.: 460

: 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-bus and SMBus I/O port

PI4IOE5V9555LEX
Diodes Incorporated
1: $1.346
368In Stock
3.000Expected 8/11/2026

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

368In Stock

3.000Expected 8/11/2026

Cut Tape

$1.346

$979

$888

$814

$764

Reel

$764

Min.: 1
Mult.: 1
Max.: 260

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

PI4IOE5V9538LE
Diodes Incorporated
1: $1.199
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

$1.199

$869

$696

$683

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: $1.451
Non-Stocked Lead-Time 36 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 36 Weeks

$1.451

$1.052

$876

$841

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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