PCF8574 Bus expander

The PCF8574A provides general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I2C-bus).

The device consists of an 8-bit quasi-bidirectional port and an I2C-bus interface. The PCF8574A has a low current consumption and includes latched outputs with high current drive capability for directly driving LEDs. It also possesses an interrupt line (INT) which can be connected.

Features:

  • Operating supply voltage 2.5 to 6 V
  • Low standby current consumption of 10 uA maximum
  • I2C-bus to parallel port expander
    Price £3.49