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TCA9535 Datasheet Low Voltage 16-Bit I2C and SMBUS Low-Power I/O Expander

Manufacturer: Texas Instruments

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General Description

The TCA9535 is a 24-pin device that provides 16 bits of general purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus or (SMBus) protocol.

The device can operate with a power supply voltage ranging from 1.65 V to 5.5 V.

The TCA9535 consists of two 8-bit Configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active-high or active-low operation) registers.

Overview

TCA9535 SCPS201E – AUGUST 2009 – REVISED MAY 2022 TCA9535 Low-Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output and Configuration Registers.

Key Features

  • I2C to Parallel port expander.
  • Wide power supply voltage range of 1.65 V to 5V.
  • Low standby-current consumption.
  • Open-drain active-low interrupt output.
  • 5-V tolerant I/O ports.
  • 400-kHz Fast I2C bus.
  • Polarity inversion register.
  • Address by three hardware address pins for use of up to eight devices.
  • Latched outputs with high-current drive capability for directly driving LEDs.
  • Latch-up performance exceeds 100.

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