TCA9545APWR

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TCA9545APWR

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IC BUS SWITCH 2 X 1:4 20TSSOP

  • HerstellerTexas Instruments

  • Herstellerteil #TCA9545APWR

  • Paket TSSOP-20

  • Auf Lager4648

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Attribut Wert
Package Tape & Reel (TR),Cut Tape (CT)
Series TCA
ProductStatus Active
Type Bus Switch
Circuit 2 x 1:4
IndependentCircuits 1
VoltageSupplySource Single Supply
Voltage-Supply 1.65V ~ 5.5V
OperatingTemperature -40°C ~ 85°C
MountingType Surface Mount
Package/Case 20-TSSOP (0.173, 4.40mm Width)

Übersicht

Description

The TCA9545APWR is a quad bidirectional translating I²C switch designed to expand the I²C bus capacity. It features four downstream channels, allowing a master I²C device to communicate with multiple peripheral devices, even if they have the same address. Each channel can be individually enabled or disabled, providing flexibility in system design. The device supports I²C bus speeds up to 400 kHz (Fast-mode) and is compatible with I²C and SMBus standards.
The TCA9545APWR integrates a voltage-level translation function, making it suitable for systems where different devices operate at varying voltage levels, typically ranging from 1.65 V to 5.5 V. This ensures seamless communication between devices operating at different voltage domains. The switch is controlled via a standard I²C interface and features a configurable interrupt output to alert the master of events on the downstream channels.
Manufactured by Texas Instruments, the TCA9545APWR is available in a TSSOP package, making it suitable for use in space-constrained applications. It's commonly used in systems requiring multiple device management, such as embedded systems, servers, and consumer electronics.

Equivalent

The TCA9545APWR is a 4-channel I2C multiplexer with interrupt logic. Equivalent products include:
1. NXP PCA9545A: Offers similar functionality with 4-channel I2C multiplexing capabilities.
2. Maxim Integrated MAX7367: Another I2C multiplexer with 4-channel options.
3. ON Semiconductor FSA221: Provides similar I2C switching features.
These alternatives can serve as substitutes, although it's important to compare specific features and specifications to ensure compatibility with your application.

Features

The TCA9545APWR is a quad bidirectional translating I2C switch with a wide operating voltage range of 1.65 V to 5.5 V. It features four separate I2C bus channels, allowing communication between multiple I2C devices. The device supports standard, fast, and fast-mode plus I2C protocols with clock frequencies up to 1 MHz.
The TCA9545APWR includes an active-low interrupt output, enabling the detection of interrupts from any of the downstream channels. It also has a reset input, which can be used to recover from bus-fault conditions. The device features low standby current consumption and is packaged in a small TSSOP, making it suitable for space-constrained applications.
The TCA9545APWR is widely used for expanding I2C bus systems, providing a way to connect multiple devices without address conflicts. Its ability to isolate bus sections helps in reducing capacitive loading and improving signal integrity. This device is ideal for applications in consumer electronics, automotive systems, and industrial communication networks.

Pinout

The TCA9545APWR is a 24-pin I2C switch with four bidirectional translating channels. This IC is used to expand the I2C bus, allowing multiple devices to communicate with the master device through these channels. Each channel can be individually enabled or disabled, allowing you to control and isolate different segments of the bus. The device supports both standard-mode and fast-mode I2C communication. The TCA9545APWR operates at a voltage range of 1.65V to 5.5V, making it suitable for a wide range of applications. The package type is TSSOP-24, which refers to the physical layout of the pins.

Manufacturer

The TCA9545APWR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of analog and embedded processing chips. These semiconductors are used in various electronic devices and systems across numerous industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems. TI is known for its innovation and plays a significant role in advancing semiconductor technology to enable new applications and improve existing products.

Application

The TCA9545APWR is a 4-channel I2C multiplexer used in applications where multiple I2C devices need to communicate with a single I2C bus master. Key application areas include:
1. Consumer Electronics: Facilitates multi-device communication in gadgets like TVs and home automation systems.
2. Industrial Automation: Manages multiple sensors and control devices in factory settings.
3. Telecommunications: Supports complex network equipment by enabling multiple communication paths.
4. Medical Devices: Integrates different sensors and monitoring equipment in healthcare setups.
5. Automotive Systems: Assists in managing various electronic subsystems like infotainment and navigation.
Its ability to reduce bus capacitance and avoid address conflicts makes it highly versatile in multi-device environments.

Package

The TCA9545APWR is an I2C bus switch with four channels, packaged in a TSSOP-16 (Thin Shrink Small Outline Package) form factor. This package type is compact, making it suitable for space-constrained applications, and is often used in electronic circuits for efficient I2C bus management.

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