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Product Detailed Parameters
- Description：IC MUX/DEMUX 4 X 2:1 16VQFN
- Series：74CB
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Multiplexer/Demultiplexer
- Circuit：4 x 2:1
- 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：16-VFQFN Exposed Pad
- Supplier Device Package：16-VQFN (4x3.5)
- Grade：-
- Qualification：-
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Overview
The SN74CB3Q3257RGYR is a low-voltage, high-bandwidth bus switch manufactured by Texas Instruments. It functions as a 4-bit one-of-2 FET multiplexer/demultiplexer within the CB logic series. The device operates on a single power supply ranging from 2.3 V to 3.6 V and supports bidirectional data flow. It is housed in a 16-VQFN package with dimensions of 4 mm by 3.5 mm. The component is rated for an operating temperature range of -40°C to +85°C and features a load capacitance of 30 pF.
Feature Summary
- Provides four independent bidirectional switching channels for signal routing
- Supports low-voltage operation suitable for portable electronic applications
- Features high bandwidth characteristics for efficient signal transmission
Applications
- Portable equipment requiring low-power signal switching
- Battery-powered systems utilizing low-voltage logic levels
- Consumer electronics involving data bus management
Procurement Notes
Verify the specific suffix RGYR corresponds to the 16-VQFN package configuration during sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications. Ensure the supplier provides official documentation matching the Texas Instruments datasheet for the SN74CB3Q3257 family to guarantee functional equivalence.
Selection Notes
Select this component when designing circuits that require compact footprints and low-voltage compatibility. The 16-VQFN package offers space efficiency for dense layouts. Consider the 2.3 V minimum supply voltage constraint when choosing power rails. Verify that the bidirectional nature of the switches aligns with the intended signal directionality requirements of the application design.
Part Context
This part belongs to the Texas Instruments SN74CB3Q3257 family of low-voltage bus switches. These devices are engineered for high-speed data transfer in space-constrained environments. The family shares common electrical characteristics but varies in packaging options such as TVSOP and VQFN. This specific model utilizes the QFN form factor for surface-mount assembly.
Replacement Considerations
The SN74CBTLV3257RGYR is a documented alternative within the same manufacturer's portfolio. Verify pinout compatibility and electrical parameter alignment before substitution. Other manufacturers may offer functionally similar parts, but direct cross-referencing requires careful validation of interface standards.
