Texas Instruments

TCA9548APWR  

Encoders, Decoders, Multiplexers & Demultiplexers

The TCA9548APWR is a 1-to-8 I2C Multiplexer/Switch from Texas Instruments. It is designed to enable communication between a single I2C master and up to eight I2C slave devices. Here is a brief description of the model, its features, and applications:

Description:

The TCA9548APWR is a low-voltage, bus-powered I2C multiplexer/switch that allows a single I2C master device to communicate with multiple I2C slave devices. It is controlled by a 2-wire I2C-compatible interface, which enables the selection of any one of the eight available I2C channels.

Features:

1. 1-to-8 I2C multiplexer/switch.
2. Supports I2C standard (100 kHz), fast mode (400 kHz), and high-speed mode (3.4 Mbps).
3. Bus-powered, with a 2.3V to 5.5V supply voltage range.
4. Small package size (SSOP-16 or TSSOP-16).
5. Low power consumption (3.3V supply: 2.4 mA active, 2.2 μA standby).
6. Supports hot-swapping of I2C devices without bus disruption.
7. 1.8V to 5.5V I2C voltage translation for seamless communication between different voltage-level devices.
8. I2C address configurable via hardware pins (default address: 0x70).
9. ESD protection on all pins.

Applications:

1. I2C bus expansion in embedded systems and microcontroller applications.
2. Reducing the number of I2C pins required on a system-on-chip (SoC) or microcontroller.
3. Connecting multiple sensors or actuators to a single I2C bus in industrial, automotive, and consumer electronics.
4. Extending the I2C bus for communication with additional devices in a distributed system.
5. Creating modular systems where different I2C devices can be connected or disconnected without disrupting the bus.
6. Reducing system cost and complexity by minimizing the number of I2C bus interfaces required.

The TCA9548APWR is a versatile and efficient solution for managing multiple I2C devices on a single bus, making it suitable for a wide range of applications where space, power, and complexity are critical factors.

TCA9548APWR Documents

Download datasheets and manufacturer documentation for TCA9548APWR

Datasheets :

TCA9548A Datasheet      

HTML Datasheet :

TCA9548A Datasheet      

PCN Design/Specification :

TCA9548A Datasheet Update 03/Jun/2014       Design 22/Feb/2022