PCA9500 - NXP

PCA9500 8-bit I2C and SMBus I/O port

The PCA9500 is an 8-bit I/O expander with an on-board 2-kbit EEPROM. The I/O expander's eight quasi-bidirectional data pins can be independently assigned as inputs or outputs to monitor board level status or activate indicator devices such as LEDs. The system master writes to the I/O configuration bits in the same way as for the PCF8574. The data for each in.

Features

 Eight general purpose input/output expander/collector
 Drop-in replacement for PCF8574 with integrated 2-kbit EEPROM
 Internal 256  8 EEPROM
 Self timed write cycle
 4 byte page write operation
 I2C-bus and SMBus interface logic
 Internal power-on reset
 Noise filter on SCL/SDA inputs
 Three address pins allowing up to eight devices on the I2C-bus/SMBus
 No glitch on power-up
 Supports hot insertion
 Power-up with all channels configured as inputs
 Low standby current NXP Semiconductors PCA9500 8-bit I2C-bus and SMBus I/O port with 2-kbit EEPROM
 Operating power supply volta.