I/O Expanders

Manufacturer Series Package/Case Packaging Product Status Programmable Number of I/O Interface Interrupt Output Features Output Type Current - Output Source/Sink Clock Frequency Voltage - Supply Operating Temperature Grade Qualification Mounting Type Supplier Device Package

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I/O Expanders are interface ICs used to increase the number of input and output ports available to microcontrollers, processors and embedded systems. They are widely used in industrial control, communication equipment, consumer electronics, automotive electronics, medical devices, IoT products, smart home devices and embedded control applications.

This category includes GPIO expanders, I2C I/O expanders, SPI I/O expanders, port expanders, keypad interface expanders, LED control expanders and related interface control components. These devices are commonly selected based on interface type, number of I/O channels, supply voltage, interrupt support, output drive capability, package type and system compatibility.

TomatoElec supplies original I/O Expanders from recognized semiconductor manufacturers such as Texas Instruments, NXP, Microchip, STMicroelectronics, onsemi, Diodes Incorporated, Renesas, Infineon and other major brands. As an in-stock electronic components supplier and independent distributor, TomatoElec provides inventory support, original component sourcing and BOM sourcing services for global customers.

Photo Mfr. Part # Availability Price Quantity Datasheet Series Package/Case Packaging Product Status Programmable Number of I/O Interface Interrupt Output Features Output Type Current - Output Source/Sink Clock Frequency Voltage - Supply Operating Temperature Grade Qualification Mounting Type Supplier Device Package
PM8056B-FGI

PM8056B-FGI

PM8056: SXP 64X12G

Microchip Technology

0 -
RFQ

-

- - Tray Obsolete Not Verified 24 - No - - - - - - - - - -
PCF8574TS/3,112

PCF8574TS/3,112

IC XPNDR 100KHZ I2C 20SSOP

NXP USA Inc.

0 -
RFQ
PCF8574TS/3,112

Datasheet

- 20-LSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified 8 I2C Yes POR Push-Pull 300µA, 25mA 100 kHz 2.5V ~ 6V -40°C ~ 85°C - - Surface Mount 20-SSOP
MAX1608EEE

MAX1608EEE

IC XPNDR 100KHZ SMBUS 16QSOP

Analog Devices Inc./Maxim Integrated

0 -
RFQ

-

- 16-SSOP (0.154", 3.90mm Width) Tube Obsolete Not Verified 8 SMBus No POR Open Drain - 100 kHz 2.7V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-QSOP
MAX1609EEE

MAX1609EEE

IC XPNDR 100KHZ SMBUS 16QSOP

Analog Devices Inc./Maxim Integrated

0 -
RFQ

-

- 16-SSOP (0.154", 3.90mm Width) Bag Obsolete Not Verified 8 SMBus No POR Open Drain - 100 kHz 2.7V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-QSOP
CP82C55A

CP82C55A

IC XPNDR PARALLEL 40DIP

Renesas Electronics Corporation

0 -
RFQ
CP82C55A

Datasheet

- 40-DIP (0.600", 15.24mm) Tube Obsolete Not Verified 24 Parallel No - Open Drain 2.5mA - 4.5V ~ 5.5V 0°C ~ 70°C - - Through Hole 40-PDIP
CS82C55A

CS82C55A

IC XPNDR PARALLEL 44PLCC

Renesas Electronics Corporation

0 -
RFQ
CS82C55A

Datasheet

- 44-LCC (J-Lead) Tube Obsolete Not Verified 24 Parallel No - Open Drain 2.5mA - 4.5V ~ 5.5V 0°C ~ 70°C - - Surface Mount 44-PLCC (16.58x16.58)
PCA9500PW,112

PCA9500PW,112

IC XPND 400KHZ I2C SMBUS 16TSSOP

NXP USA Inc.

0 -
RFQ
PCA9500PW,112

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified 8 I2C, SMBus No EEPROM, POR Push-Pull 100µA, 25mA 400 kHz 2.5V ~ 3.6V -40°C ~ 85°C - - Surface Mount 16-TSSOP
PCA9554APW,112

PCA9554APW,112

IC XPND 400KHZ I2C SMBUS 16TSSOP

NXP USA Inc.

0 -
RFQ
PCA9554APW,112

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TSSOP
PCA9554D,112

PCA9554D,112

IC XPNDR 400KHZ I2C SMBUS 16SO

NXP USA Inc.

0 -
RFQ
PCA9554D,112

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tube Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-SO
PCA9554DB,112

PCA9554DB,112

IC XPNDR 400KHZ I2C SMBUS 16SSOP

NXP USA Inc.

0 -
RFQ
PCA9554DB,112

Datasheet

- 16-SSOP (0.209", 5.30mm Width) Tube Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-SSOP
PCA9556PW,112

PCA9556PW,112

IC XPND 100KHZ I2C SMBUS 16TSSOP

NXP USA Inc.

0 -
RFQ
PCA9556PW,112

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified 8 I2C, SMBus Yes POR Open Drain, Push-Pull 10mA, 20mA 100 kHz 3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TSSOP
PCA9557D,112

PCA9557D,112

IC XPNDR 400KHZ I2C SMBUS 16SO

NXP USA Inc.

0 -
RFQ
PCA9557D,112

Datasheet

- 16-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified 8 I2C, SMBus No POR Open Drain, Push-Pull 10mA, 20mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-SO
PCF8574AP,112

PCF8574AP,112

IC XPNDR 100KHZ I2C 16DIP

NXP USA Inc.

0 -
RFQ
PCF8574AP,112

Datasheet

- 16-DIP (0.300", 7.62mm) Bulk Obsolete Not Verified 8 I2C Yes POR Push-Pull 300µA, 25mA 100 kHz 2.5V ~ 6V -40°C ~ 85°C - - Through Hole 16-DIP
PCF8574P,112

PCF8574P,112

IC XPNDR 100KHZ I2C 16DIP

NXP USA Inc.

0 -
RFQ
PCF8574P,112

Datasheet

- 16-DIP (0.300", 7.62mm) Tube Obsolete Not Verified 8 I2C Yes POR Push-Pull 300µA, 25mA 100 kHz 2.5V ~ 6V -40°C ~ 85°C - - Through Hole 16-DIP
PCA9555DB,112

PCA9555DB,112

IC XPNDR 400KHZ I2C SMBUS 24SSOP

NXP USA Inc.

0 -
RFQ
PCA9555DB,112

Datasheet

- 24-SSOP (0.209", 5.30mm Width) Tube Obsolete Not Verified 16 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 24-SSOP
PCA9557PW,112

PCA9557PW,112

IC XPND 400KHZ I2C SMBUS 16TSSOP

NXP USA Inc.

0 -
RFQ
PCA9557PW,112

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified 8 I2C, SMBus No POR Open Drain, Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 16-TSSOP
PCF8574AT/3,512

PCF8574AT/3,512

IC XPNDR 100KHZ I2C 16SO

NXP USA Inc.

0 -
RFQ
PCF8574AT/3,512

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tube Obsolete Not Verified 8 I2C Yes POR Push-Pull 300µA, 25mA 100 kHz 2.5V ~ 6V -40°C ~ 85°C - - Surface Mount 16-SO
PCA9554ATS,118

PCA9554ATS,118

IC XPNDR 400KHZ I2C SMBUS 20SSOP

NXP USA Inc.

0 -
RFQ
PCA9554ATS,118

Datasheet

- 20-LSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 20-SSOP
PCA9554TS,118

PCA9554TS,118

IC XPNDR 400KHZ I2C SMBUS 20SSOP

NXP USA Inc.

0 -
RFQ
PCA9554TS,118

Datasheet

- 20-LSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified 8 I2C, SMBus Yes POR Push-Pull 10mA, 25mA 400 kHz 2.3V ~ 5.5V -40°C ~ 85°C - - Surface Mount 20-SSOP
CQ82C55A

CQ82C55A

IC XPNDR PARALLEL 44MQFP

Renesas Electronics Corporation

0 -
RFQ
CQ82C55A

Datasheet

- 44-QFP Tube Obsolete Not Verified 24 Parallel No - Open Drain 2.5mA - 4.5V ~ 5.5V 0°C ~ 70°C - - Surface Mount 44-MQFP (10x10)
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