PCA9534RGVR

PCA9534RGVR Specifications

Manufacturer: Texas Instruments
Part Type: I/O Expander
Interface Type: I2C
Number of I/Os: 8
Voltage Supply Range: 2.3 V to 5.5 V
Maximum Clock Frequency: 400 kHz (Fast Mode I2C)
Interrupt Output: Yes (Active Low)
Input Type: Schmitt Trigger
Output Type: Open-Drain
Operating Temperature Range: -40°C to +85°C
Package Type: VQFN-16 (3.5 mm × 3.5 mm)
Mounting Type: Surface Mount
Power-On Reset: Yes
Current Consumption: Low
RoHS Compliant: Yes

Key Features

The PCA9534RGVR is a versatile 8-bit I/O expander that uses the I2C interface to provide additional general-purpose I/O lines. It features both input and output capabilities and includes an active-low interrupt output that flags input changes. This device supports 400 kHz fast-mode I2C and handles voltages from 2.3 V to 5.5 V, allowing flexible integration across platforms. Schmitt-trigger inputs and open-drain outputs enhance noise immunity and make it well-suited for mixed-voltage designs. Its compact VQFN-16 package fits easily into tight PCB layouts.

Applications

Microcontroller I/O expansion
Home automation systems
Security access control
Industrial sensor networks
Power monitoring units
Touch-screen interface control
LCD and keypad control modules
Smart meters
Portable data collection terminals
Building management systems

Product Overview

The PCA9534RGVR helps designers expand digital I/O capability without changing the main controller. It communicates via I2C and gives systems an additional 8 I/O pins. With low power usage, interrupt support, and wide voltage compatibility, it adapts well to a range of applications—from consumer electronics to industrial control. Schmitt-trigger inputs make the device reliable in electrically noisy conditions. Compact and power-efficient, it delivers performance and flexibility while conserving space and simplifying routing on multi-layer boards.

Contact Us

For additional information regarding our products, feel free to get in touch with us. You can call us at 770-870-1760 or email us at info@cyndtek.com. We look forward to assisting you and ensuring your satisfaction with all of our Cyndtek products.