TCA9535PWR Component: Applications, Features and Datasheet

Product Overview

Part Number: TCA9535PWR

Manufacturer: Texas Instruments

Description: I/O Expander 16 I2C, SMBus 400 kHz 24-TSSOP

Lead Time: Can Ship Immediately

Datasheet: Datasheet PDF

Category: Integrated Circuits (ICs), Interface, I/O Expanders

Number of Pins: 24

Short Description

As an I/O expander, Texas Instruments' TCA9535PWR IC is an integrated circuit (IC). Using the I2C and SMBus protocols, it can communicate with other devices. Tape & reel (TR) packaging makes this IC easy to assemble using an automated system. In various applications, it can operate between 1.65V and 5.5V. Depending on the application, current can be sourced or sunk. Featuring 16 inputs and outputs, this IC greatly expands the range of applications it can be used in. In industrial automation, consumer electronics, and automotive applications, I/O ports can be extremely helpful.

The device has 16 I/O ports. Packaging surrounds the 24-TSSOP (0.173, 4.40mm Width). This product is also available with a Tape & Reel case. In 1.65V~5.5V, it is provided as a voltage. It is recommended to mount the device on a Surface Mount. For the device to work correctly, it must operate between -40°C and 85°C. The output frequency must be 400kHz for the device to function properly. A total of 24 pins make up the part, which provides voltage at 1.8V. There are terminations on each of the 24 axes. The peak reflow temperature of this part is used to run 260. The device has four 2 ports in total. You can search for related parts in the CA9535 family. This device is also capable of establishing POR. An IC chip contains 16 bits. It is powered by 1.8/5V. The device has a 24-pin connector.

About Manufacturer

Texas Instruments makes semiconductors and computer technology products and is a publicly traded company. Dallas, Texas, is the company's headquarters. Microcontrollers, embedded processors, and DSP integrated circuits are all manufactured by TI worldwide. Automotive, communications, computing, industrial, and consumer electronics are among the industries for which the company provides services. Microcontrollers, sensor solutions, wireless connectivity, and data converters are some of the products produced by TI. High-quality, reliable products are TI's commitment to innovation and customer satisfaction. As a leader in technology and product development, TI is committed to reducing carbon emissions and generating energy efficiency.

Product Specification

It provides a two-line bidirectional I2C bus, or (SMBus), two-line parallel input-output (I/O) expansion with 16 bits of parallel input and output (I/O). It operates between 1.65 and 5.5 volts, depending on the supply voltage. If you want to know more about it, then don't forget to check out its technical specification which I shared with you below.

ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
SVHC	Yes
Automotive	No
PPAP	No
Number of I/Os	16
Manual Reset	No
Interface Type	SMBus\|I2C
Interface Speed (kHz)	400\|100
I2C Bus Interface Mode	Fast Mode\|Standard Mode
Interrupt Output	Yes
Output Type	Open Drain
Minimum Operating Supply Voltage (V)	1.65
Maximum Operating Supply Voltage (V)	5.5
Maximum Sink Current per Bit (mA)	25
Maximum Quiescent Current (uA)	1.5
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	85
Maximum ESD Protection Voltage (kV)	2@HBM/1@CDM
Packaging	Tape and Reel
Mounting	Surface Mount
Package Height	1.05(Max)
Package Width	4.5(Max)
Package Length	7.9(Max)
PCB changed	24
Standard Package Name	SO
Supplier Package	TSSOP
Pin Count	24
Lead Shape	Gull-wing

Features of TCA9535PWR

I/O Expansion:

Microcontrollers or other host devices have access to additional general-purpose I/O pins with the TCA9535PWR.

I2C-Bus Interface:

Communication is accomplished via the I2C bus, which allows easy connection to processors, microcontrollers, and other devices that support I2C protocols.

Multiple Operating Modes:

Multiple operating modes are typically supported, allowing pin-by-pin configuration for inputs or outputs.

Programmable Polarity:

Several I/O expanders, including the TCA9535PWR, allow you to reverse the polarity of each I/O pin, giving you greater flexibility when interpreting signals.

Interrupt Output:

In certain circumstances, the interrupt functionality of the microcontroller will trigger an interrupt signal.

Low Standby Current:

Battery-powered or energy-efficient applications can benefit from its low power consumption during standby.

Wide Voltage Range:

In response, a wide range of voltages is supported by many components, ensuring compatibility with a variety of devices.

Input Latch:

It can simplify the read-back process for I/O expanders with input latches, including the TCA9535PWR.

Hardware Address Pins:

Multiple TCA9535PWR devices can be used on the same I2C bus due to the presence of hardware address pins.

High-Speed I2C:

Faster data transfers are possible when supported by high-speed I2C communication.

ESD Protection:

Static charge handling on I/O pins is enhanced by integrated electrostatic discharge (ESD) protection.

Wide Temperature Range:

Temperature ranges range from -40C to +50C, enabling the component to be used in various applications.

Small Package Options:

With compact and space-efficient packages, boards can be designed and integrated in a wide variety of ways.

RoHS Compliant:

In compliance with RoHS (Restriction of Hazardous Substances) directives, it ensures compliance with environmental regulations.

TCA9535PWR Design

Pinout

Alt Text: Pinout

CAD Model

Alt Text: Symbol

Alt Text: Footprint

Alt Text: 3D Model

Applications of TCA9535PWR

Control Panels and Human-Machine Interfaces (HMIs):

TCA9535PWR can be used in control panels or HMIs to expand the available digital inputs and outputs for buttons, switches, and indicators.

Industrial Automation:

A sensor, actuator, and other digital device can be interfaced with the I/O expander in industrial automation systems.

Sensor Interfaces:

It can be interconnected with multiple sensors, allowing it to monitor environmental conditions, detect proximity, or detect motion.

LED Display Control:

Additional output ports are provided to control LED displays, segment displays, or indicators.

Keypad Interfaces:

A numeric keypad or matrix keypad can be interfaced to the TCA9535PWR to expand the range of digital inputs.

Automotive Electronics:

An I/O expander can be used to communicate with external sensors or control internal lighting in automotive systems.

Medical Devices:

It can be used to connect various sensors, switches, or display elements to medical devices for additional digital I/O expansion.

Power Supply Sequencing:

Additional control points are provided by TCA9535PWR for controlling and sequencing power supplies.

Communication Equipment:

I/O expanders can be used to control and monitor many aspects of networked or communication devices.

Embedded Systems:

Microcontroller I/O capabilities can be enhanced by extending the GPIO (General Purpose Input/Output) pins of embedded systems.

Test and Measurement Instruments:

An interface providing additional digital I/O channels for sensors, switches, or indicators in test and measurement devices.

Security Systems:

Sensors, keypads, and other digital components can be added to security systems with TCA9535PWR.

Consumer Electronics:

Devices that control buttons, manage LED indicators, or interface with external peripherals are integrated into consumer electronic devices.

Smart Home Devices:

Various devices, sensors, and actuators can be controlled and monitored within the home automation network using the I/O expander.

Robotics:

Microcontrollers with increased digital I/O capabilities are used in robotics to control sensors, motors, and peripheral devices.

Similar Specs Components

Part Number	TCA9535PWR	PCAL6416APW,118	PCA9539APW,118	PCA9555APW,118	TCA6416APWR
Manufacturer	Texas Instruments	NXP USA Inc.	NXP USA Inc.	NXP USA Inc.	Texas Instruments
Package / Case	24-TSSOP (0.173, 4.40mm Width)	24-TSSOP (0.173, 4.40mm Width)	24-TSSOP (0.173, 4.40mm Width)	24-TSSOP (0.173, 4.40mm Width)	24-TSSOP (0.173, 4.40mm Width)
Number of Pins	24	N/A	N/A	N/A	24
Interface	I2C, SMBus	I2C, SMBus	I2C, SMBus	I2C, SMBus	I2C, SMBus
Supply Voltage	1.8 V	1.8 V	1.8 V	1.8 V	1.8 V
Technology	CMOS	CMOS	CMOS	CMOS	CMOS
Clock Frequency	400kHz	400kHz	400kHz	400kHz	400kHz
Number of Ports	2	2	2	2	2
Power Supplies	1.8/5 V	1.8/5 V	1.8/5 V	1.8/5 V	1.8/5 V

Faqs

Question 1: How is the TCA9535PWR controlled?

Answer: A microcontroller or processor that supports the I2C protocol can communicate with the TCA9535PWR using the I2C-bus.

Question 2: What operating modes does the TCA9535PWR support?

Answer: Multiple operating modes are typically supported by TCA9535PWR, allowing inputs and outputs to be configured individually.

Question 3: Can I use the TCA9535PWR to expand the digital I/O of a microcontroller?

Answer: Microcontrollers or other host devices can use the TCA9535PWR to expand their digital I/O capabilities.

Question 4: Why should I use an I2C-controlled I/O expander like the TCA9535PWR?

Answer: An I2C-controlled I/O expander reduces the need for additional pins on the host device by adding more digital pins to a microcontroller.

Question 5: Does the TCA9535PWR have interrupt capabilities?

Answer: A microcontroller can receive interrupt signals when specific conditions arise on the I/O pins, as is the case with the TCA9535PWR.

Wrapping Up

The TCA9535PWR provides a high-functioning I/O expander in the I2C protocol, which makes it an ideal I/O expander for various electronic applications. GPIO (General Purpose Input/Output) pins can be easily extended thanks to its I2C interface, which makes integration with microcontrollers and processors simple.

Featuring programmable polarity inversion, interrupt capabilities, and multiple operating modes, the device offers a high level of versatility. TCA9535PWR is a versatile digital I/O controller for panel control, industrial automation, sensors, and LED displays.

The TCA9535PWR has a wide voltage range and low standby current, which makes it suitable for a variety of applications with low power requirements. This system can be adapted to different system architectures with its programmable features, including polarity inversion.