SN74CBTD1G125DCKR

Overview

The SN74CBTD1G125DCKR is a single Field-Effect Transistor (FET) digital bus switch manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports bidirectional data transmission with level shifting capabilities. The device features an active-low enable input that controls the switch state, allowing for low on-resistance and minimal signal distortion. Packaged in a compact SC-70-5 surface-mount case, it is designed for high-speed applications requiring efficient power management and signal integrity across digital buses.

Feature Summary

• Supports bidirectional data transfer between source and destination lines
• Integrates level-shifting functionality for seamless voltage domain interfacing
• Features an active-low enable pin for precise control of signal flow

Applications

• Portable equipment requiring low-power signal switching
• Consumer electronics utilizing high-speed data buses
• Computing products needing efficient voltage translation

Procurement Notes

Verify the specific suffix DCKR against the manufacturer's official documentation to confirm the SC-70-5 package type and tape-and-reel orientation. Ensure the operating temperature range aligns with system requirements, as industrial variants may differ. Cross-reference the RoHS status and lifecycle stage directly with Texas Instruments to avoid obsolescence risks during production planning.

Selection Notes

Select this component when a single-channel, bidirectional switch with integrated level shifting is required for 5V logic systems. It serves as a direct alternative to standard buffers where low on-resistance and small footprint are critical. Consider the SC-70-5 package constraints for PCB layout density and verify that the 4.5V minimum supply voltage meets the system's power rail specifications.

Part Context

This part belongs to the SN74CBTD1G125 family of single FET bus switches from Texas Instruments. These devices are engineered for portable applications, offering superior performance compared to mechanical relays or standard CMOS switches. The family emphasizes low power consumption and high-speed operation, making them suitable for modern digital interfaces where space and energy efficiency are paramount design constraints.

Replacement Considerations

The SN74CBTD1G125DBVR is a verified substitute featuring identical electrical characteristics but housed in an SOT-23-5 package. Designers must adjust the PCB footprint and routing when transitioning between the SC-70-5 and SOT-23-5 form factors to ensure mechanical compatibility.