PCAL6416A - NXP Semiconductors

PCAL6416A Low-voltage translating 16-bit I2C-bus/SMBus I/O expander

The PCAL6416A is a 16-bit general-purpose I/O expander that provides remote I/O expansion for most microcontroller families via the I2C-bus interface. 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 but.

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:
  – 1.5 μA typical at 5 V VDD
  – 1.0 μA typical at 3.3 V VDD
• Schmitt trigger action allows slow input transition and better switching noise .