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Product Detailed Parameters
- Description：IC BUS SWITCH 8 X 1:1 20SOIC
- Series：74CB
- Mfr：Texas Instruments
- Package：Tube
- Type：Bus Switch
- Circuit：8 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：20-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：20-SOIC
- Grade：-
- Qualification：-
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Overview
The SN74CB3T3245DWG4 is an 8-bit FET bus switch manufactured by Texas Instruments. It operates with a supply voltage range of 2.3 V to 3.6 V and features a 5-V tolerant level shifter. The device is housed in a 20-pin SOIC package and supports bidirectional data transmission. It includes powered-off protection to prevent high leakage currents when the device is unpowered. The component functions as a low-voltage bus driver suitable for portable applications requiring signal path translation between different voltage domains.
Feature Summary
- Provides bidirectional data transmission across eight independent channels
- Features 5-V tolerant level shifting capability for mixed-voltage systems
- Includes powered-off protection to minimize leakage current during power-down states
Applications
- Portable equipment requiring low-voltage operation
- Systems utilizing multiple voltage domains
- Signal path translation between 2.5-V and 3.3-V buses
Procurement Notes
Verify the specific suffix 'DWG4' against the manufacturer's official documentation to confirm the exact package type, lead-free status, and environmental compliance. Ensure the ordering part number matches the required pin configuration and temperature rating specifications before procurement.
Selection Notes
Select this component for designs requiring low on-resistance and bidirectional switching in compact surface-mount packages. Consider the 20-pin SOIC footprint and the 2.3-V to 3.6-V operating range when matching system voltage requirements. Evaluate the need for 5-V tolerance if interfacing with higher voltage logic levels.
Part Context
This part belongs to the SN74CB3T3245 family of 8-bit FET bus switches. The family is characterized by low voltage operation and high-speed performance. Variants within the series may differ in package styles such as TSSOP or SSOP, but share core functional attributes like bidirectional switching and powered-off protection capabilities.
Replacement Considerations
Consult official substitution guides for equivalent parts from the same manufacturer. Verify compatibility regarding package dimensions, pinout configurations, and electrical characteristics before replacing the component.
