SN74CBT3257CDRG4

Overview

The SN74CBT3257CDRG4 is a 4-bit 1-of-2 multiplexer/demultiplexer from Texas Instruments' CBTLV logic series. It operates within a supply voltage range of 2.3 V to 3.6 V and functions across an industrial temperature range of -40°C to +85°C. The device utilizes a 16-pin SOIC-Narrow (SOIC-16) surface-mount package. Key electrical characteristics include bidirectional data flow capability and undershoot protection for off-isolation on A and B ports up to -2 V.

Feature Summary

• Provides high-speed switching functionality for four independent data channels
• Supports bidirectional data flow with near-zero propagation delay characteristics
• Integrates undershoot protection to prevent damage during signal isolation events

Applications

• Portable consumer electronics requiring low-voltage signal routing
• Industrial control systems utilizing 3.3 V logic interfaces
• Communication equipment needing high-speed data path selection

Procurement Notes

Verify the specific suffix 'RG4' against the manufacturer's current datasheet to confirm RoHS compliance status and lead time requirements. Ensure the SOIC-16 package dimensions match your PCB footprint design constraints. Confirm that the operating voltage range aligns with your system's power supply specifications before finalizing procurement orders.

Selection Notes

Select this component when a 4-channel multiplexer is required for 3.3 V logic applications. It serves as a suitable alternative to standard 5 V devices in space-constrained designs. Consider the SOIC-16 package for automated assembly compatibility. Evaluate the low on-resistance and high bandwidth requirements against your specific signal integrity needs.

Part Context

This part belongs to the SN74CBT3257 family of analog switches. It is functionally similar to the SN74CBT3257CPW but differs in packaging and voltage tolerance. The CBTLV series is designed for low-power, high-speed applications compared to older CMOS families. It replaces legacy components in modern portable device architectures.

Replacement Considerations

The SN74CBTLV3257PWRG4 is a verified substitute offering identical functionality in a TSSOP-16 package. Verify pin-to-pin compatibility and ensure the lower voltage threshold of the PWR variant meets your system requirements.