Low-Voltage, 8-Bit I²C-Bus and SMBus I/O Expander with Interrupt Output, Reset and Configuration Registers

PCA6408A

See product image

Product Details

Select a section:

Block Diagram

PCA6408A Block Diagram

PCA6408A Block Diagram

Features

  • I²C-bus to parallel port expander
  • Operating power supply voltage range of 1.65 V to 5.5 V
  • Allows bidirectional voltage-level translation and GPIO expansion between:
    • 1.8 V SCL/SDA and 1.8 V, 2.5 V, 3.3 V or 5 V Port P
    • 2.5 V SCL/SDA and 1.8 V, 2.5 V, 3.3 V or 5 V Port P
    • 3.3 V SCL/SDA and 1.8 V, 2.5 V, 3.3 V or 5 V Port P
    • 5 V SCL/SDA and 1.8 V, 2.5 V, 3.3 V or 5 V Port P
  • Low standby current consumption of 1 μA
  • Schmitt-trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs:
    • Vhys = 0.18 V (typical) at 1.8 V
    • Vhys = 0.25 V (typical) at 2.5 V
    • Vhys = 0.33 V (typical) at 3.3 V
    • Vhys = 0.5 V (typical) at 5 V
  • 5 V tolerant I/O ports
  • Active LOW reset input (RESET)
  • Open-drain active LOW interrupt output (INT)
  • 400 kHz Fast-mode I²C-bus
  • Input/Output Configuration register
  • Polarity Inversion register
  • Internal power-on reset
  • Power-up with all channels configured as inputs
  • No glitch on power-up
  • Noise filter on SCL/SDA inputs
  • Latched outputs with 25 mA drive maximum capability for directly driving LEDs
  • Latch-up performance exceeds 100 mA per JESD 78, Class II
  • ESD protection exceeds JESD 22:
    • 2000 V Human-Body Model (A114-A)
    • 1000 V Charged-Device Model (C101)
  • Packages offered: HVQFN16, TSSOP16, XQFN16

Design Resources

Documentation

Quick reference to our documentation types.

1-5 of 9 documents

Show All

Design Files

4 design files

Hardware

4 hardware offerings

Engineering Services

1 engineering service

To find a complete list of our partners that support this product, please see our Partner Marketplace.

Training

1 trainings

Support

What do you need help with?