PCF8574T

Description

The PCF8574T is a remote 8-bit I/O expander designed for use on the I2C bus. It provides a parallel I/O port with eight independent I/O pins, allowing you to interface with external devices or sensors. The device operates in a low-power CMOS technology and is packaged in a small outline (SO16) package. The PCF8574T allows you to expand your I2C-based system by adding more inputs/outputs without the need for additional wiring or complex programming. It's an excellent component for applications that require flexibility, reliability, and ease of use.

Features

The PCF8574T is a remote 8-bit I/O expander for the I2C bus, featuring:

• Parallel I/O port with 8 bits
• CMOS technology for low power consumption
• PDSO16 package type
• Supports up to 400 kHz clock frequency
• Bus-hold feature to prevent bus contention
• Low standby current of 100 μA (typical)
• Operating voltage range of 2.5V to 5.5V

Please let me know if you have any further questions!

Package

The package type of PCF8574T is Small Outline Packages - SO16.

Pinout

The PCF8574T is an 8-bit I/O expander for I2C-bus, with a parallel I/O port. It has a pin count of 16 (SO16 package). The functions of the pins are:

• VCC: Power supply
• GND: Ground
• SDA: I2C data line
• SCL: I2C clock line
• INT: Interrupt output
• OE: Output enable
• A0-A2: Address inputs (for selecting one of four possible addresses)
• P0-P7: Parallel input/output pins

The PCF8574T allows you to expand the number of digital inputs and outputs in your system, while also providing a simple way to communicate with other devices over an I2C bus.

Manufacturer

The manufacturer of the PCF8574T is NXP Semiconductors. NXP Semiconductors is a leading semiconductor company that designs, manufactures, and markets a wide range of semiconductor products, including microcontrollers, sensors, and communication devices. The company was previously known as Philips Semiconductor before it was acquired by Qualcomm in 2016.

Equivalent

According to NXP Semiconductors' documentation, the equivalent products of PCF8574T are:

• PCF8575 (8-bit I/O expander with interrupt output)
• PCA8541 (8-bit I/O expander with interrupt output and watchdog timer)

Please note that these equivalents may have slightly different features or pinouts compared to the original PCF8574T.