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TCAL9539 - SMBus I/O Expander

General Description

The TCAL9539 device provides general purpose parallel input/output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol and is designed for 1.08-V to 3.6-V VCC operation.

Key Features

  • Operating power-supply voltage range of 1.08 V to 3.6 V.
  • Low standby current consumption of 1 µA typical at 1.8 mV.
  • 1-MHz fast mode plus I2C bus.
  • Hardware address pin allows two devices on the same I2C, SMBus bus.
  • Active-low reset input (RESET ).
  • Open-drain active-low interrupt output (INT ).
  • Input or output configuration register.
  • Polarity inversion register.
  • Configurable I/O drive strength register.
  • Pull.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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ADVANCE INFORMATION TCAL9539 SCPS241 – JULY 2022 TCAL9539 Low-Voltage 16-Bit I2C-Bus, SMBus I/O Expander with Interrupt Output, Reset, and Configuration Registers 1 Features • Operating power-supply voltage range of 1.08 V to 3.6 V • Low standby current consumption of 1 µA typical at 1.