Datasheet4U Logo Datasheet4U.com

PCA9555 - Remote 16-bit I2C and SMBus I/O Expander

General Description

This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation.

It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)].

Key Features

  • 1 Low Standby-Current Consumption of 1 μA Max.
  • I2C to Parallel Port Expander.
  • Open-Drain Active-Low Interrupt Output.
  • 5-V Tolerant I/O Ports.
  • Compatible With Most Microcontrollers.
  • 400-kHz Fast I2C Bus.
  • Address by Three Hardware Address Pins for Use of up to Eight Devices.
  • Polarity Inversion Register.
  • Latched Outputs With High-Current Drive Capability for Directly Driving LEDs.
  • Latch-Up Performance Exceeds.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
PCA9555 16-bit I2C-bus and SMBus I/O port NXP
PCA9555 Low-voltage 16-bit I2C-bus I/O port nexperia
PCA9555A Low-voltage 16-bit I2C-bus I/O port NXP
PCA9550 2-bit I2C LED driver NXP
PCA9551 8-bit I2C LED driver NXP

Other Datasheets by Texas Instruments

Part Number Description
PCA9554 Remote 8-Bit I2C AND SMBus I/O Expander
PCA9554A Remote 8-Bit I2C and SMBus I/O Expander
PCA9557 Remote 8-Bit I2C and SMBus Low-Power I/O Expander
PCA9515A Dual Bidirectional I2C Bus and SMBus Repeater
PCA9515B Dual Bidirectional I2C Bus and SMBus Repeater

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.

View original datasheet text
Product Folder Order Now Technical Documents Tools & Software Support & Community PCA9555 SCPS131I – AUGUST 2005 – REVISED APRIL 2019 PCA9555 Remote 16-bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 1 Features •1 Low Standby-Current Consumption of 1 μA Max • I2C to Parallel Port Expander • Open-Drain Active-Low Interrupt Output • 5-V Tolerant I/O Ports • Compatible With Most Microcontrollers • 400-kHz Fast I2C Bus • Address by Three Hardware Address Pins for Use of up to Eight Devices • Polarity Inversion Register • Latched Outputs With High-Current Drive Capability for Directly Driving LEDs • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II • ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) –