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: $1.51
1,659In Stock

Mfr. Part No.
TCA9554ADWR

Mouser Part No
595-TCA9554ADWR

Texas Instruments

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

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Datasheet

1,659In Stock

Cut Tape

$1.51

$1.10

$0.996

$0.883

Reel

$0.722

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: $1.60
3,966In Stock

Mfr. Part No.
TCA9554ADBQR

Mouser Part No
595-TCA9554ADBQR

Texas Instruments

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

Learn More

Datasheet

3,966In Stock

Cut Tape

$1.60

$1.17

$1.07

$0.944

Reel

$0.812

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: $1.73
2,008In Stock

Mfr. Part No.
TCA9554DBQR

Mouser Part No
595-TCA9554DBQR

Texas Instruments

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

Learn More

Datasheet

2,008In Stock

Cut Tape

$1.73

$1.28

$1.16

$1.03

Reel

$0.868

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 Remote 8B I2C & SMBu s I/O Expander

TCA9554APWR
Texas Instruments
1: $1.51
7,856In Stock

Mfr. Part No.
TCA9554APWR

Mouser Part No
595-TCA9554APWR

Texas Instruments

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

Learn More

Datasheet

7,856In Stock

Cut Tape

$1.51

$1.10

$0.996

$0.884

Reel

$0.739

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: $1.67
2,163In Stock

Mfr. Part No.
TCA9554DBR

Mouser Part No
595-TCA9554DBR

Texas Instruments

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

Learn More

Datasheet

2,163In Stock

Cut Tape

$1.67

$1.22

$1.11

$0.986

Reel

$0.818

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-TCA9554DWT

TCA9554DWR
Texas Instruments
1: $1.67
2,151In Stock

Mfr. Part No.
TCA9554DWR

Mouser Part No
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

2,151In Stock

Cut Tape

$1.67

$1.22

$1.11

$0.986

Reel

$0.829

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: $1.51
2,188In Stock
8,000Expected 20/11/2026

Mfr. Part No.
TCA9554PWR

Mouser Part No
595-TCA9554PWR

Texas Instruments

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

Learn More

Datasheet

2,188In Stock

8,000Expected 20/11/2026

Cut Tape

$1.51

$1.11

$1.01

$0.889

Reel

$0.743

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: $1.51
868In Stock
2,000Expected 23/07/2026

Mfr. Part No.
TCA9554ADBR

Mouser Part No
595-TCA9554ADBR

Texas Instruments

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

Learn More

Datasheet

868In Stock

2,000Expected 23/07/2026

Cut Tape

$1.51

$1.10

$0.996

$0.884

Reel

$0.739

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

TCA9554DWT
Texas Instruments
1: $2.22
457In Stock

Mfr. Part No.
TCA9554DWT

Mouser Part No
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

$2.22

$1.65

$1.50

$1.34

Reel

$1.26

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: $1.61
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
TCA9554ADWT

Mouser Part No
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 16 Weeks

Cut Tape

$1.61

$1.57

$1.50

$1.43

Reel

$1.12

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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