I/O Expander, 24bit, 400 kHz, I2C, SMBus, 1.65 V, 5.5 V, UQFN

TCA6424ARGJR - I/O Expander, 24bit, 400 kHz, I2C, SMBus, 1.65 V, 5.5 V, UQFN

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Product Overview

The TCA6424ARGJR is a low-voltage 24-bit I²C and SMBus I/O Expander designed to provide general-purpose remote I/O expansion for most microcontroller families via the I²C interface (serial clock (SCL) and serial data (SDA)). The major benefit of this device is its wide VCC range. It can operate on the P-port side and on the SDA/SCL side. This allows the TCA6424A to interface with next-generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power. In contrast to the dropping power supplies of microprocessors and microcontrollers, some PCB components, such as LEDs, remain at a 5V power supply.
  • I²C to parallel port expander
  • Allows bidirectional voltage-level translation and GPIO expansion
  • Low standby current consumption
  • Active-low reset input
  • Open-drain active-low interrupt output
  • Input/output configuration register
  • Polarity inversion register
  • Internal power-on reset
  • Green product and no Sb/Br


Signal Processing


This IC can be damaged by ESD. We recommend that all ICs be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

Product Information

I2C, SMBus
MSL 1 - Unlimited
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1,100 will be available for delivery on 11/Jul/2018

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