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PCAL6524 Datasheet Ultra low-voltage translating 24-bit Fm+ I2C-bus/SMBus I/O expander

Manufacturer: NXP Semiconductors

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General Description

The PCAL6524 is a 24-bit general purpose I/O expander that provides remote I/O expansion for most microcontroller families via the Fast-mode Plus (Fm+) I2C-bus interface.

The ultra low-voltage interface allows for direct connection to a microcontroller operating down to 0.8 V.

NXP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in battery-powered mobile applications for interfacing to sensors, push buttons, keypad, etc.

Overview

PCAL6524 Ultra low-voltage translating 24-bit Fm+ I2C-bus/SMBus I/O expander with Agile.

Key Features

  • I2C-bus to parallel port expander.
  • 1 MHz Fast-mode Plus I2C-bus.
  • Operating power supply voltage range of 0.8 V to 3.6 V on the I2C-bus side.
  • Allows bidirectional voltage-level translation and GPIO expansion between 0.8 V to 3.6 V SCL/SDA and 1.8 V, 2.5 V, 3.3 V, 5.5 V Port P.
  • Low standby current consumption: 2.0 A typical at 3.3 V VDD(P).
  • Schmitt trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs.
  • Vhys =.

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