Interface - I/O Expanders

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TCA9554/A Remote 8-bit I2C & SMBus I/O Expander

Texas Instruments TCA9554/A Remote 8-bit I²C & SMBus I/O Expander provides 8 bits of general-purpose parallel input/output (I/O) expansion for the two-line bidirectional I²C bus (or SMBus) protocol. Each device can operate with a power supply voltage ranging from 1.65V to 5.5V. It supports both 100kHz (Standard-mode) and 400kHz (Fast-mode) clock frequencies. These I/O expanders from Texas Instruments provide a simple solution when additional I/Os are needed for switches, sensors, push buttons, LEDs, fans, and other similar devices. The features of the TCA9554 include an interrupt that is generated on the INT pin whenever an input port changes state. The A0, A1, and A2 hardware selectable address pins allow up to eight TCA9554/A devices on the same I²C bus.

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Part #

Interface - I/O Expanders 8-Bit I2C and SMBus I/O Expander A 595-T A 595-TCA9554ADWT

TCA9554ADWR
Texas Instruments
1: $2.17
1,683In Stock

Mfr. Part #
TCA9554ADWR

Mouser Part #
595-TCA9554ADWR

Texas Instruments

Interface - I/O Expanders 8-Bit I2C and SMBus I/O Expander A 595-T A 595-TCA9554ADWT

Learn More

Datasheet

1,683In Stock

Cut Tape

$2.17

$1.58

$1.43

$1.27

Reel

$1.04

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

TCA9554A

SMD/SMT

SOIC-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 Remote 8-bit I2C SMB us I/O Expander

TCA9554ADBQR
Texas Instruments
1: $2.30
4,021In Stock

Mfr. Part #
TCA9554ADBQR

Mouser Part #
595-TCA9554ADBQR

Texas Instruments

Interface - I/O Expanders Remote 8-bit I2C SMB us I/O Expander

Learn More

Datasheet

4,021In Stock

Cut Tape

$2.30

$1.68

$1.54

$1.36

Reel

$1.17

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

TCA9554A

SMD/SMT

SSOP-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 Remote 8-bit I2C SMB us I/O Expander

TCA9554DBQR
Texas Instruments
1: $2.49
2,125In Stock

Mfr. Part #
TCA9554DBQR

Mouser Part #
595-TCA9554DBQR

Texas Instruments

Interface - I/O Expanders Remote 8-bit I2C SMB us I/O Expander

Learn More

Datasheet

2,125In Stock

Cut Tape

$2.49

$1.84

$1.67

$1.48

Reel

$1.25

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

TCA9554

SMD/SMT

SSOP-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 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9554DWT

TCA9554DWR
Texas Instruments
1: $2.40
2,185In Stock

Mfr. Part #
TCA9554DWR

Mouser Part #
595-TCA9554DWR

Texas Instruments

Interface - I/O Expanders 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9554DWT

Learn More

Datasheet

2,185In Stock

Cut Tape

$2.40

$1.76

$1.60

$1.42

Reel

$1.19

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

TCA9554

SMD/SMT

SOIC-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 Remote 8-B I2C & SM Bus I/O Expander

TCA9554PWR
Texas Instruments
1: $2.17
7,355In Stock

Mfr. Part #
TCA9554PWR

Mouser Part #
595-TCA9554PWR

Texas Instruments

Interface - I/O Expanders Remote 8-B I2C & SM Bus I/O Expander

Learn More

Datasheet

7,355In Stock

Cut Tape

$2.17

$1.60

$1.45

$1.28

Reel

$1.07

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

TCA9554

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 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan

TCA9554ADBR
Texas Instruments
1: $2.17
1,219In Stock

Mfr. Part #
TCA9554ADBR

Mouser Part #
595-TCA9554ADBR

Texas Instruments

Interface - I/O Expanders 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan

Learn More

Datasheet

1,219In Stock

Cut Tape

$2.17

$1.58

$1.43

$1.27

Reel

$1.06

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

TCA9554A

SMD/SMT

SSOP-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 Remote 8B I2C & SMBu s I/O Expander

TCA9554APWR
Texas Instruments
1: $2.17
12In Stock
8,000Expected 2026-06-16

Mfr. Part #
TCA9554APWR

Mouser Part #
595-TCA9554APWR

Texas Instruments

Interface - I/O Expanders Remote 8B I2C & SMBu s I/O Expander

Learn More

Datasheet

12In Stock

8,000Expected 2026-06-16

Cut Tape

$2.17

$1.58

$1.43

$1.27

Reel

$1.06

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

TCA9554A

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 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan

TCA9554DBR
Texas Instruments
1: $2.40
101In Stock
2,000Expected 2026-07-09

Mfr. Part #
TCA9554DBR

Mouser Part #
595-TCA9554DBR

Texas Instruments

Interface - I/O Expanders 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan

Learn More

Datasheet

101In Stock

2,000Expected 2026-07-09

Cut Tape

$2.40

$1.76

$1.60

$1.42

Reel

$1.18

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

TCA9554

SMD/SMT

SSOP-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 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9554DWR

TCA9554DWT
Texas Instruments
1: $3.23
457In Stock

Mfr. Part #
TCA9554DWT

Mouser Part #
595-TCA9554DWT

Texas Instruments

Interface - I/O Expanders 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9554DWR

Learn More

Datasheet

457In Stock

Cut Tape

$3.23

$2.38

$2.17

$1.93

Reel

$1.81

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

TCA9554

SMD/SMT

SOIC-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

Interface - I/O Expanders 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9554ADWR

TCA9554ADWT
Texas Instruments
1: $2.95
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
TCA9554ADWT

Mouser Part #
595-TCA9554ADWT

Texas Instruments

Interface - I/O Expanders 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9554ADWR

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$2.95

$2.17

$1.97

$1.77

Reel

$1.66

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

TCA9554A

SMD/SMT

SOIC-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

TCA9554/A Remote 8-bit I2C & SMBus I/O Expander

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