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PCA9554 Key Features

  • 400 kHz I2C Bus patible (Note 1)
  • 2.3 V to 5.5 V Operation
  • Low Standby Current
  • 5 V Tolerant I/Os
  • 8 I/O Pins that Default to Inputs at Power-up
  • High Drive Capability
  • Individual I/O Configuration
  • Polarity Inversion Register
  • Active Low Interrupt Output
  • Internal Power-on Reset

Other PCA9554 Datasheets

Manufacturer Part Number Description
Texas Instruments Logo Texas Instruments PCA9554 Remote 8-Bit I2C AND SMBus I/O Expander
NXP Logo NXP Semiconductors PCA9554 8-bit I2C and SMBus I/O port
NXP Logo NXP Semiconductors PCA9554A 8-bit I2C and SMBus I/O port
Texas Instruments Logo Texas Instruments PCA9554A Remote 8-Bit I2C and SMBus I/O Expander

View all PCA9554 datasheets →

PCA9554 Description

The PCA9554 is a CMOS device that provides 8−bit parallel input/output port expansion for I2C and SMBus patible applications. This I/O expander provides a simple solution in applications where additional I/Os are needed: sensors, power switches, LEDs, pushbuttons, and fans.