TCA9548APWR

Overview

The TCA9548APWR is an eight-channel bidirectional translating switch manufactured by Texas Instruments. It operates within a supply voltage range of 1.65 V to 5.5 V and supports clock frequencies up to 400 kHz. The device features a maximum on-resistance of 70 Ohms and a maximum power supply current of 80 uA. It functions across a temperature range of -40°C to +85°C and is housed in a 24-pin TSSOP package.

Feature Summary

• Provides eight independent bidirectional translating switches controllable via the I2C bus
• Supports hot-swapping with low-power standby consumption
• Includes a low-active RESET input for system initialization and fault recovery

Applications

• Communication and network systems
• Servers and routers
• Embedded systems requiring I2C address expansion

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and environmental compliance. Ensure the component matches the required operating voltage and temperature specifications for the target application environment before integration.

Selection Notes

Select this component when expanding I2C bus capacity beyond single-address limitations. It enables connection of multiple devices with identical addresses by routing signals to separate downstream channels, facilitating complex multi-sensor architectures.

Part Context

This part belongs to the TCA9548A series of I2C switches. It serves as a hardware solution for managing multiple peripherals on a single bus line, commonly used in embedded designs where address conflicts prevent direct connection of similar sensors or modules.

Replacement Considerations

The PCA9548AD is a comparable alternative from NXP USA Inc. Verify pin compatibility and electrical parameters before substitution.