SN74CBT1G125DBVR

Overview

The SN74CBT1G125DBVR is a single FET bus switch manufactured by Texas Instruments, designed for low-voltage applications. It operates within a supply voltage range of 2.3 V to 3.6 V and features a 5-V tolerant level shifter, allowing it to interface between different voltage domains. The device provides powered-off protection to prevent current leakage when the power supply is off. Packaged in a compact SOT-23-5 surface-mount format, it supports an input/output continuous current of up to 128 mA. The component functions as a bidirectional analog switch with low on-resistance, suitable for high-speed data transmission in portable and battery-powered systems.

Feature Summary

• Provides signal path translation via a 5-V tolerant level shifter for interfacing diverse voltage levels
• Includes powered-off protection to ensure zero leakage current during power-down states
• Supports high continuous input/output current capability for robust signal switching

Applications

• Portable consumer electronics requiring low-voltage operation
• Battery-powered equipment needing efficient power management
• Systems involving level shifting between 2.5-V/3.3-V and 5-V domains

Procurement Notes

Verify the specific suffix 'DBVR' confirms the SOT-23-5 package and tape-and-reel shipping configuration. Confirm that the 5-V tolerance specification aligns with the target system's I/O requirements. Ensure the operating temperature range meets the environmental constraints of the final assembly. Cross-reference the manufacturer datasheet for any recent product change notices affecting pinout or electrical characteristics.

Selection Notes

Select this component when a single-channel bidirectional switch is required for low-voltage logic families. It is appropriate for designs where powered-off protection is critical to prevent back-powering. Consider the SOT-23-5 footprint if board space is limited. Verify that the 3.6 V maximum supply voltage matches the system's power rail. This part is suitable for replacing older bus switches that lack modern low-leakage features.

Part Context

This device belongs to the SN74CBT1G series of single FET bus switches from Texas Instruments. It complements other logic components by providing analog switching capabilities in a digital logic package. The series is designed for applications requiring minimal signal distortion and low power consumption. It serves as a bridge between different voltage domains in mixed-signal circuits.

Replacement Considerations

SN74CBTLV1G125DBVR