SN74CBTLV3257DBQR

Overview

The SN74CBTLV3257DBQR is a low-voltage 4-bit 1-of-2 FET multiplexer/demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 3.6 V and supports bidirectional data flow. The device features four independent channels configured as SPDT switches, housed in an 8-pin DSBQ package suitable for surface-mount applications. Designed for portable systems, it ensures signal integrity through low on-resistance and minimal leakage current characteristics.

Feature Summary

• Provides four independent single-pole double-throw (SPDT) switching paths for flexible signal routing
• Supports bidirectional data transmission between input/output ports without direction control pins
• Operates reliably across the full industrial temperature range with low power consumption

Applications

• Portable consumer electronics requiring low-voltage signal switching
• Battery-powered devices needing efficient power management via signal routing
• Mobile communication equipment utilizing high-speed data line selection

Procurement Notes

Verify the specific suffix DBQR confirms the DSBQ package type and automotive-grade qualification status against the official datasheet. Confirm RoHS compliance and moisture sensitivity level requirements for your assembly process. Ensure the ordering part number matches the exact pinout and electrical specifications required for your design integration.

Selection Notes

Select this component when designing circuits that require multiple low-voltage analog or digital signal paths to be switched simultaneously. It is appropriate for applications where space constraints favor compact packages like DSBQ over larger alternatives. Consider its operating voltage limits and thermal performance relative to your system's power budget and environmental conditions.

Part Context

This device belongs to the SN74CBTLV3257 family of low-voltage bus switch ICs from Texas Instruments. The family is engineered for high-speed data transfer in portable and battery-operated systems. Variants within the series typically differ by package style and specific automotive or commercial grade qualifications while maintaining core functional equivalence.

Replacement Considerations

SN74CBTLV3257DRG4

FAQ

Does the SN74CBTLV3257DBQR require separate control pins for data direction?

No, the device supports bidirectional data flow without dedicated direction control pins, simplifying the interface design.

What is the maximum supply voltage for this multiplexer?

The maximum recommended supply voltage is 3.6 V, ensuring compatibility with standard low-voltage logic families.