on November 19th 2,642

Exploring TCA6424ARGJR: Features, Use Cases, and Technical Datasheet

The Texas Instruments TCA6424ARGJR is a powerful and flexible 24-bit I/O expander, engineered to integrate seamlessly with I2C and SMBus systems. This article explores its key features, technical specifications, and wide-ranging applications, demonstrating how it simplifies communication between microcontrollers and peripheral devices. By enabling efficient management of I/O operations, the TCA6424ARGJR helps you enhance system performance, reduce complexity, and achieve cost-effective solutions. With its support for diverse protocols and configurable functionalities, this expander is a requisite tool for developing innovative and reliable electronic systems in today’s dynamic technology landscape.

Catalog

Overview of TCA6424ARGJR

The TCA6424ARGJR, developed by Texas Instruments, serves as a flexible I/O expander that effortlessly links with microcontrollers via the I2C interface. With its operational capacity spanning a vast voltage range from 1.65V to 5.5V for both P-port and SDA/SCL connections, it offers extensive compatibility across numerous systems. This wide-ranging adaptability allows the device to be implemented in various applications, from basic electronics to more intricate control systems utilized in industrial environments.

Highlighted attributes of the TCA6424ARGJR are minimal standby current consumption of 1µA, which is advantageous for low-power scenarios, assisting in energy preservation. The open-drain interrupt output, playing a major role in efficient communication, promptly notifies the microcontroller about any status alterations. The presence of a reset input option enhances the dependability of the system by offering a straightforward method to restart when needed. Customizable configuration settings that provide flexible control, catering to a vast array of applications, from everyday consumer electronics to advanced automation systems.

Features

Feature	Description
24-bit I/O Expander	Provides 24 additional input/output pins controlled via I2C or SMBus protocol.
Operating Voltage	Supports 1.65V to 5.5V on both P-port and SDA/SCL sides, ensuring compatibility with various voltage levels and devices.
Low Standby Current	Consumes only 1 µA in standby mode, conserving power and extending battery life.
Open-Drain Interrupt Output	Signals the microcontroller about input changes or error conditions.
Reset Input	Allows resetting to the default state via an external signal.
Configuration Registers	Programmable settings for pin direction, polarity, and output state.
Package	Comes in a UQFN-32 package, offering a small footprint and low profile.
Applications	Suitable for keypad, LED, and GPIO control, enhancing microcontroller functionality and flexibility.

Technical Specifications

Type	Parameter
Lifecycle Status	ACTIVE (Last Updated: 1 day ago)
Factory Lead Time	6 Weeks
Contact Plating	Gold
Mounting Type	Surface Mount
Package / Case	32-UFQFN Exposed Pad
Surface Mount	YES
Number of Pins	32
Weight	59.987591 mg
Number of I/Os	24
Operating Temperature	-40°C ~ 85°C
Packaging	Tape & Reel (TR)
JESD-609 Code	e4
Pbfree Code	Yes
Part Status	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	32
ECCN Code	EAR99
HTS Code	8542.39.00.01
Voltage - Supply	1.65V ~ 5.5V
Terminal Position	QUAD
Peak Reflow Temperature (Cel)	260
Supply Voltage	3.3V
Base Part Number	TCA6424
Pin Count	32
Output Type	Push-Pull
Power Supplies	2/5V
Interface	I2C, SMBus
Number of Ports	3
Output Current	25mA
Number of Bits	24
Clock Frequency	400kHz
Supply Current-Max	0.03mA
Interrupt Output	Yes
Current - Output Source/Sink	10mA 25mA
Features	POR
Height	600μm
Length	5mm
Width	5mm
Thickness	0m
REACH SVHC	No SVHC
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free

CAD Model

Symbol

Footprint

3D Structural Representation

Alternative Components

Part Number	Description	Manufacturer
TCA6424ARSMR	24 I/O, PIA-GENERAL PURPOSE, QCC32, QFN-32	Texas Instruments

Applications

Streamlining Keypad Matrix Layouts

The TCA6424ARGJR I/O expander offers a streamlined approach to designing keypad matrix layouts by reducing the reliance on numerous microcontroller pins. This efficiency not only trims down the expenses associated with electronic components but also paves the way for creating circuit boards that are more compact and adeptly organized. In essence, adeptly utilizing I/O expanders can lead to smaller, more ergonomic PCBs, making them an attractive choice for the ever-evolving field of portable and wearable gadgetry.

Enhancing LED Control through PWM

When addressing LED control, the TCA6424ARGJR's embedded PWM feature presents an adept methodology for manipulating intensity and color arrangements in complex lighting setups. This attribute shines in applications like smart home technology and transformative visual displays. The proficiency to perform graceful transitions and finely-tuned lighting effects, without excessively straining the primary microcontroller, subtly enriches your experiences and points towards a superior product caliber.

Augmenting GPIO for Versatile Device Architecture

The TCA6424ARGJR boosts the GPIO capabilities, opening up a myriad of connectivity avenues in device engineering. This adaptability is remarkable in customizable scenarios, where distinct component layouts become required to fulfill unique operational requirements. The ease with which I/O expanders blend into various setups unlocks innovative possibilities in domains like IoT and industrial automation, where changeability and expansion potential are key. Considering this, envisioning how this technology could stimulate more fluid prototyping is intriguing, fostering swift adjustments in response to market insights and evolving consumer desires.

Manufacturer

Texas Instruments is renowned for its semiconductor innovations, continuously enhancing its esteemed status with a broad product range that elevates performance and efficiency across various industries. The company's fervent enthusiasm for innovation shines through in its creation of revolutionary semiconductor solutions, addressing the needs of applications from consumer electronics to automotive systems. Their commitment to low-power usage and high-efficiency designs aligns with the increasing call for eco-friendly technology. Gaining insights from projects beyond academic boundaries often offers you a meaningful understanding of practical applications. You can frequently choose Texas Instruments' components to boost the durability and reliability of electronic devices, especially in the fields of healthcare and renewable energy.

Comparable Elements

Part Number	Manufacturer	Package / Case	Number of Pins	Interface	Supply Voltage	Technology	Pbfree Code	REACH SVHC	Lead Free
TCA6424ARGJR	Texas Instruments	32-UFQFN Exposed Pad	32	I2C, SMBus	3.3 V	CMOS	Yes	No SVHC	Lead Free
MCP23017-E/ML	Microchip Technology	24-WFQFN Exposed Pad	24	I2C, SMBus	1.8 V	CMOS	Yes	No SVHC	Lead Free
TCA9555RTWR	Texas Instruments	24-WFQFN Exposed Pad	24	I2C, SMBus	1.8 V	CMOS	Yes	No SVHC	Lead Free
TCA9535RTWR	Texas Instruments	24-WFQFN Exposed Pad	24	I2C, SMBus	1.8 V	CMOS	Yes	No SVHC	Lead Free
TCA6416ARTWR	Texas Instruments	28-VQFN Exposed Pad	28	I2C	5 V	CMOS	Yes	No SVHC	Lead Free

Datasheet PDF

TCA6424ARGJR Datasheets:

TCA6424A.pdf

MCP23017-E/ML Datasheets:

MCP23017, MCP23S17 Datasheet.pdf

TCA9555RTWR Datasheets:

TCA9555.pdf

TCA9535RTWR Datasheets:

TCA9535.pdf

TCA6416ARTWR Datasheets:

TCA6416A.pdf