TCA9509RVHR

Overview

The TCA9509RVHR is a level-shifting I2C bus repeater manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 5.5 V and supports clock frequencies up to 400 kHz. The device features a propagation delay of 132.8 ns and draws 3 mA of operating current. It has an input capacitance of 7 pF, output current capability of 10 uA, and power dissipation of 100 mW. Designed for surface mount installation, it is housed in an X2QFN-8 package and functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides bidirectional level translation between different voltage domains on I2C and SMBus networks
• Acts as a bus repeater to extend communication distance and increase fan-out capacity

Applications

• Interfacing microcontrollers with sensors operating at different logic voltage levels
• Extending I2C bus length in embedded systems requiring signal integrity over longer traces
• Increasing the number of devices connected to a single I2C master controller

Procurement Notes

Verify the specific suffix RVHR against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with the target system's voltage requirements and environmental conditions before procurement. Cross-reference the component marking with the official identification guide to prevent counterfeit substitution.

Selection Notes

Select this component when bidirectional level shifting and bus repeating are required simultaneously. Verify that the system voltage range falls within the 2.7 V to 5.5 V operational limits. Consider the X2QFN-8 package size constraints and thermal dissipation requirements relative to the 100 mW power rating during design integration.

Part Context

This part belongs to the TCA9509 series of I2C bus repeaters. It shares functional similarities with other members like the TCA9509MRVHR but differs in specific electrical characteristics such as minimum supply voltage and quiescent current. The RVHR suffix denotes the specific packaging configuration used for high-volume manufacturing.

Replacement Considerations

The TCA9509MRVHR is a related variant within the same family. Verify pinout compatibility and check if the lower minimum supply voltage (900 mV) and different current consumption of the MRVHR variant meet the specific application requirements.