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Product Detailed Parameters
- Description：IC BUS SWITCH 1 X 1:1 SOT23-5
- Series：74CB
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Type：Bus Switch
- Circuit：1 x 1:1
- Independent Circuits：1
- Current - Output High, Low：-
- Voltage Supply Source：Single Supply
- Voltage - Supply：2.3V ~ 3.6V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
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Overview
The SN74CB3T1G125DBVR 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. The device provides powered-off protection and signal path translation capabilities. It is housed in a compact SOT-23-5 surface-mount package with dimensions of approximately 3.05 mm x 1.75 mm x 1.3 mm. The component supports an operating temperature range from -40 °C to +85 °C.
Feature Summary
- Provides signal path translation between different voltage domains
- Includes powered-off protection to prevent current leakage
- Features 5-V tolerant input/output levels
Applications
- Portable equipment requiring low voltage operation
- Battery-powered consumer electronics
- Mobile communications devices
Procurement Notes
Verify the specific suffix 'DBVR' corresponds to the SOT-23-5 package and tape-and-reel shipping configuration. Confirm that the 5-V tolerance specification aligns with the target system interface requirements. Ensure the 2.3 V to 3.6 V supply range matches the available power rails in the design.
Selection Notes
Select this component when interfacing low-voltage logic with 5-V tolerant buses in space-constrained designs. The SOT-23-5 package offers a small footprint suitable for portable devices. Consider the 5-V tolerance feature if the input signals may exceed the VCC voltage during operation or power-down states.
Part Context
This part belongs to the SN74CB3T series of single FET bus switches. It is functionally similar to other single-channel switches but specifically optimized for 2.5-V/3.3-V systems with 5-V compatibility. It serves as a bridge for level shifting in mixed-voltage digital circuits.
Replacement Considerations
SN74AHCT1G125DBVR: Compatible buffer with TTL-compatible inputs and wider voltage range (4.5V-5.5V). SN74AHC1G125DBVR: High-speed CMOS buffer with broader voltage support (2V-5.5V). SN74LVC1G125DBVR: LVC buffer offering higher drive current and wider voltage range.
