TIPCF8574AN
Overview
The PCF8574AN is a silicon CMOS circuit that provides general-purpose remote I/O expansion for most microcontroller families via the two-line bidirectional I2C bus. This 8-bit I/O expander features an open-drain interrupt output that signals the host controller when any input state changes, eliminating the need for constant polling.
Why Choose This Part
The device features a low standby current of 10uA and supports a wide supply voltage range of 2.5V to 6V, making it compatible with both legacy 5V systems and modern 3.3V logic. Its 16-PDIP through-hole package is specifically advantageous for prototyping on breadboards and easy hand-soldering in hobbyist or industrial through-hole PCBs.
Applications
Key Specifications
Getting Started
To use this part, connect the SDA and SCL lines to your microcontroller's I2C bus with appropriate pull-up resistors and set the hardware address using the A0, A1, and A2 pins. In the Arduino environment, the 'Wire' library or specialized PCF8574 libraries can be used to read and write 8-bit data patterns to the device.
PCF8574 Family
| Part Number | Difference | Stock |
|---|---|---|
| PCF8574PWR | PWR | 2,827 |
