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PCA9556 Datasheet Octal Smbus Registered Interface

Manufacturer: NXP Semiconductors

Overview: INTEGRATED CIRCUITS PCA9556 Octal SMBus Registered Interface Product specification 1998 Dec 18 Philips Semiconductors Philips Semiconductors Product specification Octal SMBus Registered Interface.

General Description

The PCA9556 is a silicon CMOS circuit which provides parallel input/output expansion for SMBus applications.

The PCA9556 consists of an 8-bit input port register, 8-bit output port register, and an SMBus interface.

It has low current consumption and a high impedance open drain output pin, I/O0.

Key Features

  • SMBus compliance with fixed 3.3V voltage levels.
  • Operating power supply voltage range of 3.0V.
  • 3.6V.
  • Active high polarity inverter register.
  • Write protect register.
  • Active low reset pin.
  • Low leakage current on power-down.
  • Noise filter on SCL/SDA inputs.
  • No glitch on power-up.
  • Internal power-on reset.
  • 8 I/O pins which default to 8 inputs.
  • High impedance open drain on I/O.

More Datasheets from NXP Semiconductors

Part Number Description
PCA9550 2-bit I2C LED driver
PCA9551 8-bit I2C LED driver
PCA9552 16-bit I2C LED driver
PCA9553 4-bit I2C LED driver
PCA9554 8-bit I2C and SMBus I/O port
PCA9554A 8-bit I2C and SMBus I/O port
PCA9555 16-bit I2C-bus and SMBus I/O port
PCA9555A Low-voltage 16-bit I2C-bus I/O port
PCA9557 8-bit I2C and SMBus I/0 port with reset
PCA9559 5-bit multiplexed/1-bit latched 6-bit I2C EEPROM

PCA9556 Distributor