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PCF8574DW +BOM

8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt

PCF8574DW Information

Description

Here's a concise introduction to the PCF8574DW: The PCF8574DW is an 8-bit I/O expander from Texas Instruments, designed for use in various applications that require digital input/output pins. It features an I2C interface, open-drain interrupt output, and software reset functionality. The device has three address pins, allowing up to eight devices to share the same bus. Operating within a voltage range of 2.5V to 6V and a temperature range of -40°C to 85°C, it is suitable for use in a wide variety of applications. Common uses for the PCF8574DW include LED driver circuits, relay control, keypad interfacing, and I2C communication. Its versatility makes it an attractive option for designers seeking a reliable and efficient solution for digital input/output operations.

Features

According to the product information, the features of the PCF8574DW include:

  • 8-bit I/O expander with I2C interface
  • Open-drain interrupt output
  • 3 address pins for up to 8 devices on the same bus
  • Software reset functionality
  • Operates at a voltage range of 2.5V to 6V
  • Wide temperature range from -40°C to 85°C

Package

The package type of PCF8574DW is SOIC (DW)-16.

Manufacturer

The manufacturer of the PCF8574DW is Texas Instruments (TI).

Applications

According to the product information, the application areas of PCF8574DW include:

  • LED driver circuits
  • Relay control
  • Keypad interfacing
  • I2C communication

It is also suitable for various applications requiring interfacing with external devices through digital input/output pins.

Equivalent

According to Texas Instruments' documentation, the equivalent products of PCF8574DW are:

  • PCF8584 (16-bit I/O expander with I2C interface)
  • PCA8575 (8-bit I/O expander with SPI interface)

Please note that these equivalents may not provide an exact match in terms of features and specifications, but rather offer similar functionality.

Specifications

Number of I/Os 8 Features Interrupt pin
Supply voltage (min) (V) 2.5 Supply voltage (max) (V) 6
Addresses 8 Rating Catalog
Frequency (max) (MHz) 0.1 Operating temperature range (°C) -40 to 85
feature-number-of-i-os 8 feature-number-of-addresses 8
feature-manual-reset No feature-interface-type I2C
feature-interface-speed-khz 100 feature-i2c-bus-interface-mode Standard Mode
feature-interrupt-output Yes feature-output-type Open Drain
feature-minimum-operating-supply-voltage-v 2.5 feature-maximum-operating-supply-voltage-v 6
feature-maximum-sink-current-per-bit-ma 25 feature-maximum-source-current-per-bit-ma -1
feature-maximum-quiescent-current-ua 10 feature-packaging Tube
feature-rad-hard feature-pin-count 16
feature-cecc-qualified No feature-esd-protection Yes
feature-military No feature-aec-qualified No
feature-aec-qualified-number feature-auto-motive No
feature-p-pap No feature-eccn-code EAR99
feature-svhc Yes feature-svhc-exceeds-threshold No
Package/Case SOP16

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Ratings and Reviews

More
T
T**r 04/09/2024

delivered in less than three weeks. well thank you.

12
E
E**a 09/19/2022

It's great this setup.

4
C
C**i 04/30/2021

Avaq's delivery speed is unparalleled! The PEX8714-AB80BI G components I ordered arrived sooner than expected, allowing me to complete my project ahead of schedule. Thank you, Avaq! - Andrew Wilson

18
C
C**b 04/02/2021

Everything is fine! Thanks for the work!

7

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