PCA9534A Datasheet Remote 8-BIT I2C and SMBus Low-Power I/O Expander

Manufacturer: Texas Instruments

Overview: Product Folder Sample & Buy Technical Documents Tools & Software Support & Community PCA9534A SCPS141I – SEPTEMBER 2006 – REVISED JUNE 2014 PCA9534A Remote 8-BIT I2C and SMBus Low-Power I/O Expander With Interrupt.

Datasheet (PDF)

PCA9534A remote 8-bit i2c and smbus low-power i/o expander by Texas Instruments - Datasheet Preview

Datasheet Details

Part number	PCA9534A
Manufacturer	Texas Instruments
File Size	2.15 MB
Description	Remote 8-BIT I2C and SMBus Low-Power I/O Expander
Download	PCA9534A Download (PDF)

General Description

This 8-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)].

The PCA9534A consists of one 8-bit configuration (input or output selection), input port, output port, and polarity inversion (active high or active low) register.

Key Features

1 Low Standby Current Consumption of 1 μA Max.
I2C to Parallel Port Expander.
Open-Drain Active-Low Interrupt Output.
Operating Power-Supply Voltage Range of 2.3 V to 5.5 V.
5-V Tolerant I/O Ports.
400-kHz Fast I2C Bus.
Three Hardware Address Pins Allow Up to Eight Devices on the I2C/SMBus.
Allows Up to 16 Devices on the I2C/SMBus When Used in Conjunction with the PCA9534 See Device Comparison Table for I2C Expander offering.

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