Product Description
Features:
1.I2C interface, I / O expansion module, two I / O scalability 8 I / O (up to 8 simultaneous use the PCF8574 expanded to 64 I / O)
2. Supports two interface types access target board: Pin or row seat, Support I2C bus cascade (by pin header row seat docking methods can be used simultaneously multiple I2C modules)
3.Typical application: I / O resource shortage MCU I / O expansion
4.The main resources: PCF8574, I2C interface, the 8-bit parallel

Specifications
Operating voltage: 2.5 V to 6 V,with non-overvoltage tolerant I/O held to VDD with 100 uA current source
Board Type: Pin or row seat
Operating temperature: -40~85 Celsius
Standby current consumption: 10 μA Max
Interface: 100 kHz I2C-bus interface (Standard-mode I2C-bus)
Size:48*16mm
I2C to Parallel-Port Expander
Open-Drain Interrupt Output
Compatible with Most Microcontrollers
Latched Outputs with High-Current Drive
Capability for Directly Driving LEDs
Latch-Up Performance Exceeds 100 mA

Package Includes:
5 x PCF8574 IO Expansion Module
20 x Male and female DuPont cable