.hide-partial { max-height: none; } .show-more { display: none; }

Interface - I/O Expanders

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 80

Applied Filters:

Manufacturer = Multiple Values

Series

Mounting Style

Package/Case

Interface Type

Number of I/Os

Interrupt Output

Supply Voltage - Min

Supply Voltage - Max

Maximum Clock Frequency

Minimum Operating Temperature

Maximum Operating Temperature

Qualification

Packaging

ESD Protection

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Interface - I/O Expanders 8bit Input/Output Exp I2C interface

MCP23008T-E/ML
Microchip Technology
1: $1.49
17,363In Stock

Mfr. Part No.
MCP23008T-E/ML

Mouser Part No
579-MCP23008T-E/ML

Microchip Technology

Interface - I/O Expanders 8bit Input/Output Exp I2C interface

Datasheet

17,363In Stock

Cut Tape

$1.49

Reel

$1.49

MouseReel Available

Min.: 1
Mult.: 1

: 3,300

SMD/SMT

QFN-20

I2C, Serial

8 I/O

With Interrupt

1.8 V

5.5 V

1.7 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

Without ESD Protection

Interface - I/O Expanders In/Out I2C int

MCP23008T-E/SO
Microchip Technology
1: $1.37
36,032In Stock

Mfr. Part No.
MCP23008T-E/SO

Mouser Part No
579-MCP23008T-E/SO

Microchip Technology

Interface - I/O Expanders In/Out I2C int

Datasheet

36,032In Stock

Cut Tape

$1.37

Reel

$1.37

MouseReel Available

Min.: 1
Mult.: 1

: 1,100

SMD/SMT

SOIC-18

I2C, Serial

8 I/O

With Interrupt

1.8 V

5.5 V

1.7 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

Without ESD Protection

Interface - I/O Expanders 8B I/O Expander I2C interface

MCP23009-E/MG
Microchip Technology
1: $1.63
14,066In Stock

Mfr. Part No.
MCP23009-E/MG

Mouser Part No
579-MCP23009-E/MG

Microchip Technology

Interface - I/O Expanders 8B I/O Expander I2C interface

Datasheet

Product Comments

14,066In Stock

$1.63

Min.: 1
Mult.: 1

SMD/SMT

QFN-16

I2C, Serial

8 I/O

With Interrupt

1.8 V

5.5 V

3.4 MHz

- 40 C

+ 125 C

Tube

4 kV

Interface - I/O Expanders 8bit Input/Output Exp I2C interface

MCP23008-E/ML
Microchip Technology
1: $1.49
12,632In Stock

Mfr. Part No.
MCP23008-E/ML

Mouser Part No
579-MCP23008-E/ML

Microchip Technology

Interface - I/O Expanders 8bit Input/Output Exp I2C interface

Datasheet

12,632In Stock

$1.49

Min.: 1
Mult.: 1

SMD/SMT

QFN-20

I2C, Serial

8 I/O

With Interrupt

1.8 V

5.5 V

1.7 MHz

- 40 C

+ 125 C

Tube

Without ESD Protection

Interface - I/O Expanders In/Out I2C int

MCP23008-E/SO
Microchip Technology
1: $1.37
10,780In Stock

Mfr. Part No.
MCP23008-E/SO

Mouser Part No
579-MCP23008-E/SO

Microchip Technology

Interface - I/O Expanders In/Out I2C int

Datasheet

10,780In Stock

$1.37

Min.: 1
Mult.: 1

SMD/SMT

SOIC-18

I2C, Serial

8 I/O

With Interrupt

1.8 V

5.5 V

1.7 MHz

- 40 C

+ 125 C

Tube

Without ESD Protection

Interface - I/O Expanders In/Out I2C int

MCP23008-E/SS
Microchip Technology
1: $1.49
4,694In Stock
5,494Expected 08/06/2026

Mfr. Part No.
MCP23008-E/SS

Mouser Part No
579-MCP23008-E/SS

Microchip Technology

Interface - I/O Expanders In/Out I2C int

Datasheet

4,694In Stock

5,494Expected 08/06/2026

$1.49

Min.: 1
Mult.: 1

SMD/SMT

SSOP-20

I2C, Serial

8 I/O

With Interrupt

1.8 V

5.5 V

1.7 MHz

- 40 C

+ 125 C

Tube

Without ESD Protection

Interface - I/O Expanders In/Out I2C int

MCP23008T-E/SS
Microchip Technology
1: $1.49
2,988In Stock
6,400Expected 22/06/2026

Mfr. Part No.
MCP23008T-E/SS

Mouser Part No
579-MCP23008T-E/SS

Microchip Technology

Interface - I/O Expanders In/Out I2C int

Datasheet

2,988In Stock

6,400Expected 22/06/2026

Cut Tape

$1.49

Reel

$1.49

MouseReel Available

Min.: 1
Mult.: 1

: 1,600

SMD/SMT

SSOP-20

I2C, Serial

8 I/O

With Interrupt

1.8 V

5.5 V

1.7 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

Without ESD Protection

Interface - I/O Expanders 8-bit I/O Expander I2C interface

MCP23009-E/SS
Microchip Technology
1: $1.52
3,900In Stock

Mfr. Part No.
MCP23009-E/SS

Mouser Part No
579-MCP23009-E/SS

Microchip Technology

Interface - I/O Expanders 8-bit I/O Expander I2C interface

Datasheet

3,900In Stock

$1.52

Min.: 1
Mult.: 1

SMD/SMT

SSOP-20

I2C, Serial

8 I/O

With Interrupt

1.8 V

5.5 V

3.4 MHz

- 40 C

+ 125 C

Tube

4 kV

Interface - I/O Expanders 8B I/O Expander SPI interface

MCP23009T-E/MG
Microchip Technology
1: $1.63
1,661In Stock
6,600Expected 04/06/2026

Mfr. Part No.
MCP23009T-E/MG

Mouser Part No
579-MCP23009T-E/MG

Microchip Technology

Interface - I/O Expanders 8B I/O Expander SPI interface

Datasheet

Product Comments

1,661In Stock

6,600Expected 04/06/2026

Cut Tape

$1.63

Reel

$1.63

MouseReel Available

Min.: 1
Mult.: 1

: 3,300

SMD/SMT

QFN-16

I2C, Serial

8 I/O

With Interrupt

1.8 V

5.5 V

3.4 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 8-bit I/O Expander I2C interface

MCP23009T-E/SS
Microchip Technology
1: $1.63
1,560In Stock

Mfr. Part No.
MCP23009T-E/SS

Mouser Part No
579-MCP23009T-E/SS

Microchip Technology

Interface - I/O Expanders 8-bit I/O Expander I2C interface

Datasheet

1,560In Stock

Cut Tape

$1.63

Reel

$1.63

MouseReel Available

Min.: 1
Mult.: 1

: 1,600

SMD/SMT

SSOP-20

I2C, Serial

8 I/O

With Interrupt

1.8 V

5.5 V

3.4 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 16bit Input/Output Exp I2C interface

MCP23017-E/SP
Microchip Technology
1: $1.69
3,833In Stock

Mfr. Part No.
MCP23017-E/SP

Mouser Part No
579-MCP23017-E/SP

Microchip Technology

Interface - I/O Expanders 16bit Input/Output Exp I2C interface

Learn More

Datasheet

3,833In Stock

$1.69

Min.: 1
Mult.: 1

MCP23017

Through Hole

SPDIP-28

I2C, Serial

16 I/O

With Interrupt

1.8 V

5.5 V

1.7 MHz

- 40 C

+ 125 C

Tube

4 kV

Interface - I/O Expanders 16bit Input/Output Exp I2C interface

MCP23017T-E/ML
Microchip Technology
1: $1.90
6,072In Stock
22,400Expected 05/06/2026

Mfr. Part No.
MCP23017T-E/ML

Mouser Part No
579-MCP23017T-E/ML

Microchip Technology

Interface - I/O Expanders 16bit Input/Output Exp I2C interface

Learn More

Datasheet

6,072In Stock

22,400Expected 05/06/2026

Cut Tape

$1.90

Reel

$1.90

MouseReel Available

Min.: 1
Mult.: 1

: 1,600

MCP23017

SMD/SMT

QFN-28

I2C, Serial

16 I/O

With Interrupt

1.8 V

5.5 V

1.7 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 16B I/O Expander I2C interface

MCP23018-E/MJ
Microchip Technology
1: $2.04
1,374In Stock

Mfr. Part No.
MCP23018-E/MJ

Mouser Part No
579-MCP23018-E/MJ

Microchip Technology

Interface - I/O Expanders 16B I/O Expander I2C interface

Datasheet

1,374In Stock

$2.04

Min.: 1
Mult.: 1

SMD/SMT

QFN-24

I2C, Serial

16 I/O

With Interrupt

1.8 V

5.5 V

3.4 MHz

- 40 C

+ 125 C

Tube

Without ESD Protection

Interface - I/O Expanders 16B I/O Expander I2C interface

MCP23018T-E/MJ
Microchip Technology
1: $2.04
6,435In Stock

Mfr. Part No.
MCP23018T-E/MJ

Mouser Part No
579-MCP23018T-E/MJ

Microchip Technology

Interface - I/O Expanders 16B I/O Expander I2C interface

Datasheet

6,435In Stock

Cut Tape

$2.04

Reel

$2.04

MouseReel Available

Min.: 1
Mult.: 1

: 3,300

SMD/SMT

QFN-24

I2C, Serial

16 I/O

With Interrupt

1.8 V

5.5 V

3.4 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

Without ESD Protection

Interface - I/O Expanders 16-bit I/O Expander I2C interface

MCP23018T-E/SS
Microchip Technology
1: $2.24
1,585In Stock

Mfr. Part No.
MCP23018T-E/SS

Mouser Part No
579-MCP23018T-E/SS

Microchip Technology

Interface - I/O Expanders 16-bit I/O Expander I2C interface

Datasheet

1,585In Stock

Cut Tape

$2.24

Reel

$2.24

MouseReel Available

Min.: 1
Mult.: 1

: 2,100

SMD/SMT

SSOP-24

I2C, Serial

16 I/O

With Interrupt

1.8 V

5.5 V

3.4 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

Without ESD Protection

Interface - I/O Expanders 8bit Input/Output Exp SPI interface

MCP23S08-E/ML
Microchip Technology
1: $1.65
5,932In Stock

Mfr. Part No.
MCP23S08-E/ML

Mouser Part No
579-MCP23S08-E/ML

Microchip Technology

Interface - I/O Expanders 8bit Input/Output Exp SPI interface

Datasheet

5,932In Stock

$1.65

Min.: 1
Mult.: 1

SMD/SMT

QFN-20

Serial, SPI

8 I/O

With Interrupt

1.8 V

5.5 V

10 MHz

- 40 C

+ 125 C

Tube

Without ESD Protection

Interface - I/O Expanders In/Out SPI int

MCP23S08-E/P
Microchip Technology
1: $1.61
1,160In Stock

Mfr. Part No.
MCP23S08-E/P

Mouser Part No
579-MCP23S08-E/P

Microchip Technology

Interface - I/O Expanders In/Out SPI int

Datasheet

1,160In Stock

$1.61

Min.: 1
Mult.: 1

Through Hole

PDIP-18

Serial, SPI

8 I/O

With Interrupt

1.8 V

5.5 V

10 MHz

- 40 C

+ 125 C

Tube

Without ESD Protection

Interface - I/O Expanders In/Out SPI int

MCP23S08-E/SS
Microchip Technology
1: $1.55
1,620In Stock
5,494Expected 10/06/2026

Mfr. Part No.
MCP23S08-E/SS

Mouser Part No
579-MCP23S08-E/SS

Microchip Technology

Interface - I/O Expanders In/Out SPI int

Datasheet

1,620In Stock

5,494Expected 10/06/2026

$1.55

Min.: 1
Mult.: 1

SMD/SMT

SSOP-20

Serial, SPI

8 I/O

With Interrupt

1.8 V

5.5 V

10 MHz

- 40 C

+ 125 C

Tube

Without ESD Protection

Interface - I/O Expanders 8bit Input/Output Exp SPI interface

MCP23S08T-E/ML
Microchip Technology
1: $1.65
1,877In Stock

Mfr. Part No.
MCP23S08T-E/ML

Mouser Part No
579-MCP23S08T-E/ML

Microchip Technology

Interface - I/O Expanders 8bit Input/Output Exp SPI interface

Datasheet

1,877In Stock

Cut Tape

$1.65

Reel

$1.65

MouseReel Available

Min.: 1
Mult.: 1

: 3,300

SMD/SMT

QFN-20

Serial, SPI

8 I/O

With Interrupt

1.8 V

5.5 V

10 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

Without ESD Protection

Interface - I/O Expanders In/Out SPI int

MCP23S08T-E/SO
Microchip Technology
1: $1.54
2,911In Stock
8,800Expected 11/06/2026

Mfr. Part No.
MCP23S08T-E/SO

Mouser Part No
579-MCP23S08T-E/SO

Microchip Technology

Interface - I/O Expanders In/Out SPI int

Datasheet

2,911In Stock

8,800Expected 11/06/2026

Cut Tape

$1.54

Reel

$1.54

MouseReel Available

Min.: 1
Mult.: 1

: 1,100

SMD/SMT

SOIC-18

Serial, SPI

8 I/O

With Interrupt

1.8 V

5.5 V

10 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

Without ESD Protection

Interface - I/O Expanders 8B I/O Expander SPI interface

MCP23S09-E/MG
Microchip Technology
1: $1.70
10,887In Stock

Mfr. Part No.
MCP23S09-E/MG

Mouser Part No
579-MCP23S09-E/MG

Microchip Technology

Interface - I/O Expanders 8B I/O Expander SPI interface

Datasheet

Product Comments

10,887In Stock

$1.70

Min.: 1
Mult.: 1

SMD/SMT

QFN-16

Serial, SPI

8 I/O

With Interrupt

1.8 V

5.5 V

10 MHz

- 40 C

+ 125 C

Tube

4 kV

Interface - I/O Expanders 8B I/O Expander SPI interface

MCP23S09T-E/MG
Microchip Technology
1: $1.70
2,754In Stock

Mfr. Part No.
MCP23S09T-E/MG

Mouser Part No
579-MCP23S09T-E/MG

Microchip Technology

Interface - I/O Expanders 8B I/O Expander SPI interface

Datasheet

Product Comments

2,754In Stock

Cut Tape

$1.70

Reel

$1.70

MouseReel Available

Min.: 1
Mult.: 1

: 3,300

SMD/SMT

QFN-16

Serial, SPI

8 I/O

With Interrupt

1.8 V

5.5 V

10 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 8-bit I/O Expander SPI interface

MCP23S09T-E/SO
Microchip Technology
1: $1.70
2,092In Stock

Mfr. Part No.
MCP23S09T-E/SO

Mouser Part No
579-MCP23S09T-E/SO

Microchip Technology

Interface - I/O Expanders 8-bit I/O Expander SPI interface

Datasheet

2,092In Stock

Cut Tape

$1.70

Reel

$1.70

MouseReel Available

Min.: 1
Mult.: 1

: 1,100

SMD/SMT

SOIC-18

Serial, SPI

8 I/O

With Interrupt

1.8 V

5.5 V

10 MHz

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

4 kV

Interface - I/O Expanders 16bit Input/Output Exp SPI interface

MCP23S17-E/ML
Microchip Technology
1: $2.04
2,280In Stock
7,259Expected 04/06/2026

Mfr. Part No.
MCP23S17-E/ML

Mouser Part No
579-MCP23S17-E/ML

Microchip Technology

Interface - I/O Expanders 16bit Input/Output Exp SPI interface

Learn More

Datasheet

2,280In Stock

7,259Expected 04/06/2026

$2.04

Min.: 1
Mult.: 1

MCP23S17

SMD/SMT

QFN-28

Serial, SPI

16 I/O

With Interrupt

1.8 V

5.5 V

10 MHz

- 40 C

+ 125 C

Tube

4 kV

Interface - I/O Expanders 16bit Input/Output Exp SPI interface

MCP23S17-E/SP
Microchip Technology
1: $1.78
4,688In Stock
7,350Expected 10/06/2026

Mfr. Part No.
MCP23S17-E/SP

Mouser Part No
579-MCP23S17-E/SP

Microchip Technology

Interface - I/O Expanders 16bit Input/Output Exp SPI interface

Learn More

Datasheet

4,688In Stock

7,350Expected 10/06/2026

$1.78

Min.: 1
Mult.: 1

MCP23S17

Through Hole

SPDIP-28

Serial, SPI

16 I/O

With Interrupt

1.8 V

5.5 V

10 MHz

- 40 C

+ 125 C

Tube

4 kV

Interface - I/O Expanders

Customer Service Office

Company

Resources

Support