Datasheet4U Logo Datasheet4U.com

PCAL9555A - Low-voltage 16-bit I2C-bus GPIO

Description

The PCAL9555A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and weak pull-up resistors for I2C-bus/SMBus applications.

Features

  • I2C-bus to parallel port expander.
  • Operating power supply voltage range of 1.65 V to 5.5 V.
  • Low standby current consumption:.
  • 1.5 A (typical at 5 V VDD).
  • 1.0 A (typical at 3.3 V VDD).
  • Schmitt-trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs.
  • Vhys = 0.10  VDD (typical).
  • 5 V tolerant I/Os.
  • Open-drain active LOW interrupt output (INT).
  • 400 kHz Fast-mode I2C-bus.
  • Internal power-on rese.

📥 Download Datasheet

Datasheet preview – PCAL9555A

Datasheet Details

Part number PCAL9555A
Manufacturer NXP Semiconductors
File Size 2.53 MB
Description Low-voltage 16-bit I2C-bus GPIO
Datasheet download datasheet PCAL9555A Datasheet
Additional preview pages of the PCAL9555A datasheet.

📁 Similar Datasheet

  • PCAL6524 - Ultra low-voltage translating 24-bit Fm+ I2C-bus/SMBus I/O expander (NXP)
  • PCAL6534 - Ultra low-voltage translating 34-bit Fm+ I2C-bus/SMBus I/O expander (NXP)
  • PCA0102A - LOW COST - HIGH PERFORMANCE PHASE LOCKED LOOP (Z-Communications)
  • PCA0163A - LOW COST - HIGH PERFORMANCE PHASE LOCKED LOOP (Z-Communications)
  • PCA0174A-LF - Telecommunications - Satellite (Z-Communications)
  • PCA0198A - LOW COST - HIGH PERFORMANCE PHASE LOCKED LOOP (Z-Communications)
  • PCA0300A - LOW COST - HIGH PERFORMANCE PHASE LOCKED LOOP (Z-Communications)
  • PCA0445A - LOW COST - HIGH PERFORMANCE PHASE LOCKED LOOP (Z-Communications)
  • PCA0495A - LOW COST - HIGH PERFORMANCE PHASE LOCKED LOOP (Z-Communications)
  • PCA1070 - Multistandard programmable analog CMOS transmission (NXP)
Other Datasheets by NXP Semiconductors
  • PCAL9535A - Low-voltage 16-bit I2C-bus I/O port
  • PCAL9539A - Low-voltage 16-bit I2C-bus and SMBus low power I/O port
  • PCAL6408A - 8-bit I2C-bus/SMBus I/O expander
  • PCAL6416A - Low-voltage translating 16-bit I2C-bus/SMBus I/O expander
  • PCA2125 - SPI Real-time clock/calendar
  • PCA24S08 - 1024 x 8-bit CMOS EEPROM
  • PCA9306 - Dual bidirectional I2C-bus and SMBus voltage-level translator
  • PCA9502 - 8-bit I/O expander

Full PDF Text Transcription

Click to expand full text
PCAL9555A Low-voltage 16-bit I2C-bus GPIO with Agile I/O, interrupt and weak pull-up Rev. 2 — 19 December 2014 Product data sheet 1. General description The PCAL9555A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and weak pull-up resistors for I2C-bus/SMBus applications. NXP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in ACPI power switches, sensors, push buttons, LEDs, fan control, etc. In addition to providing a flexible set of GPIOs, the wide VDD range of 1.65 V to 5.5 V allows the PCAL9555A to interface with next-generation microprocessors and microcontrollers where supply levels are dropping down to conserve power.
Published: |