SN74CBTLV3251DBQR

Overview

The SN74CBTLV3251DBQR is a low-voltage 1-of-8 FET multiplexer/demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 3.6 V and supports rail-to-rail data I/O port switching. The device features an active-low output enable (OE) pin that controls the switch state. It utilizes a 16-pin SSOP package with a body width of 0.25 inches. The component is designed for applications requiring efficient signal routing in embedded systems, supporting operation across a temperature range of -40°C to 85°C.

Feature Summary

• FET-based architecture providing low on-resistance for minimal signal attenuation
• Ioff protection ensures high-impedance outputs when powered down to prevent backflow
• Rail-to-rail input/output capability compatible with various logic families
• Active-low output enable pin allows precise control over signal path connectivity

Applications

• Signal channel switching in communication equipment such as routers and base stations
• Data acquisition systems requiring multi-channel signal routing
• Audio and video signal switching in consumer electronics
• Bus expansion in server and storage devices

Procurement Notes

Verify the specific suffix DBQR confirms the SSOP-16 narrow-body package variant. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the operating voltage aligns with the 2.3 V to 3.6 V specification. Check for any lead-free certification documentation if required by your manufacturing standards.

Selection Notes

Select this component when a compact 1-of-8 analog switch is needed for low-voltage digital or analog signals. It is suitable for designs where space is constrained due to the SSOP-16 form factor. Consider it for systems requiring Ioff protection to isolate powered-down sections. Compare against other CBTLV series parts if different packaging or voltage ranges are necessary.

Part Context

This part belongs to the SN74CBTLV3251 family of low-voltage FET multiplexers from Texas Instruments. The family includes variants with different packages such as RGYR (VQFN) and D/DR (SOIC). These components share similar electrical characteristics but differ in physical footprint and thermal performance. The DBQR variant specifically denotes the SSOP-16 package option within this product line.

Replacement Considerations

SN74CBTLV3251D/DR offers identical functionality in a standard SOIC-16 package. SN74CBTLV3251RGYR provides the same electrical performance in a smaller VQFN-16 footprint. SN74CBTLV3251PWR uses a TSSOP-16 package which may be easier for manual soldering.