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TCA9539 - Low Voltage 16-Bit I2C and SMBUS Low-Power I/O Expander

General Description

The TCA9539 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 (VCC) range from 1.65 V to 5.5 V.

Key Features

  • 1 I2C to Parallel Port Expander.
  • Low Standby-Current Consumption.
  • Open-Drain Active-Low Interrupt Output.
  • Active-Low Reset Input.
  • 5-V Tolerant I/O Ports.
  • Compatible With Most Microcontrollers.
  • 400-kHz Fast I2C Bus.
  • Input and Output Configuration Register.
  • Polarity Inversion Register.
  • Internal Power-on Reset.
  • No Glitch on Power Up.
  • Noise Filter on SCL and SDA Inputs.
  • Address by Two.

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Full PDF Text Transcription for TCA9539 (Reference)

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TCA9539 SCPS202C – OCTOBER 2009 – REVISED MAY 2016 TCA9539 Low Voltage 16-Bit I2C and...

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C – OCTOBER 2009 – REVISED MAY 2016 TCA9539 Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output, Reset Pin, and Configuration Registers 1 Features •1 I2C to Parallel Port Expander • Low Standby-Current Consumption • Open-Drain Active-Low Interrupt Output • Active-Low Reset Input • 5-V Tolerant I/O Ports • Compatible With Most Microcontrollers • 400-kHz Fast I2C Bus • Input and Output Configuration Register • Polarity Inversion Register • Internal Power-on Reset • No Glitch on Power Up • Noise Filter on SCL and SDA Inputs • Address by Two Hardware Address Pins for Use of up to Four Devices • Latche

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