PCA9535ECDWR2G

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Number of I/O:	16
Interface:	I²C, SMBus
Interrupt Output:	Yes
Features:	POR
Output Type:	Open Drain
Current - Output Source/Sink:	25mA
Clock Frequency:	100kHz
Voltage - Supply:	1.65 V ~ 5.5 V
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	24-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	24-SOIC
Base Part Number:	PCA9535E

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Introduction

PCA9535ECDWR2G is a multi-channel input/output (I/O) expander with 8bit bidirectional I/O pins which belongs to Interface I/O Expanders family. The goal of using I/O expanders is to allow the devices to interface different types of digital I/O without the use of multiple ports. This device contains a dedicated I/O control block and as well a bus control block, this makes it ideal for use in different interfaces such as Low Voltage Differential Signaling (LVDS), 3.3V and 5V CMOS, as well as other higher speed digital signals.

Application Field

The I/O expanders are used in applications such as embedded system design, automotive interior lighting systems, computer motherboards, LED display boards and industrial instrumentation. The embedded system design is specifically where the PCA9535ECDWR2G fits in, it’s a 8 bit I/O expander that interfaces various digital I/O including 3.3V and 5V CMOS as well as higher speed digital signals. With this device, it’s easier and more cost-effective to design a system that can communicate with multiple devices with different types of I/O. In the automotive industry, these expanders are used for interior lighting systems, the PCA9535ECDWR2G is designed with a driver circuit for automotive high contrast LED display boards. This device is capable of driving White or RGB LEDs and displays a much higher contrast ratio than regular LEDs. Moreover, for computer motherboards, the PCA9535ECDWR2G is a perfect addition to support I/O connections, as it has a dedicated I/O control block and bus control block, making this device robust and compatible with older systems. Additionally, in other applications such as industrial instrumentation, these expanders can be used to control multiple I/O in an easy and cost-effective manner, without the need to use multiple ports. This can even reduce the time and energy costs in the process.

Working Principle

The working principle of the PCA9535ECDWR2G is quite simple. It consists of two different blocks, an I/O control block and a bus control block. The I/O control block is responsible for controlling the signals going in and out of the device, while the bus control block takes care of the bus control of the device. The PCA9535ECDWR2G has 8bit bi-directional I/O pins, that allow it to connect to different digital I/O in addition to 3.3V and 5V CMOS. The device also comes with a driver circuit for the LED displays which gives it the capability of driving White or RGB LEDs. The device can also interface different hosts with different types of digital I/O, allowing it to communicate with other devices in various systems. Moreover, the device comes with built-in protection features such as built-in ESD protection, to reduce the risk of damage due to sudden electric changes. Additionally, the device also short circuit protection and thermal shutdown feature.

Conclusion

The PCA9535ECDWR2G is ideal for embedded system design, automotive interior lighting systems, computer motherboards, LED display boards and as well industrial instrumentation. With its 8bit bi-directional I/O pins, the PCA9535ECDWR2G can easily interface different digital I/O, such as 3.3V and 5V CMOS and other higher speed digital signals. The device contains an I/O control block and a bus control block and is equipped with features such as ESD, short circuit, and thermal shutdown protection. The device enables cost-effective, time-saving and energy-costing solutions to applications related to I/O expansion, without the need to use multiple ports. The PCA9535ECDWR2G is a robust and cost-effective device, that is ideal for I/O expansion in various applications.

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