SN74CBT3257CDR

Overview

The SN74CBT3257CDR is a low-voltage, high-speed CMOS quad multiplexer/demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 3.6 V and features four independent 1-of-2 FET switches in a single package. The device utilizes a 16-pin SOIC (Narrow) surface-mount package suitable for automated assembly. It supports bidirectional data flow and includes an active-low enable input to control signal transmission. The component is designed for applications requiring low on-resistance and minimal signal distortion across digital bus lines.

Feature Summary

• Integrates four independent 1-of-2 analog or digital switches within a compact integrated circuit
• Supports bidirectional data transmission between selected source and destination terminals
• Features low on-resistance characteristics to minimize signal attenuation during conduction
• Includes an active-low enable pin to selectively deactivate switch channels

Applications

• Portable equipment utilizing low-voltage power supplies
• Battery-powered consumer electronics requiring efficient signal routing
• Computing systems managing internal data bus connections
• Communication devices handling signal switching tasks

Procurement Notes

Verify the specific suffix 'C' against official Texas Instruments documentation to confirm it denotes commercial temperature grade specifications rather than automotive qualification. Ensure the ordering part number matches the exact package style required for your PCB footprint. Cross-reference the manufacturer's latest datasheet revision to validate all electrical parameters before finalizing procurement orders.

Selection Notes

Select this component when designing circuits that require multiple independent signal paths controlled by a single logic interface. The low operating voltage range makes it suitable for modern low-power systems. Consider the package dimensions and thermal characteristics relative to your board layout constraints. Verify compatibility with system logic levels to ensure proper enable signal activation without additional level shifting components.

Part Context

This device belongs to the SN74CBT series of high-speed CMOS logic products from Texas Instruments. The CBTLV and CBT families focus on low-voltage operation and fast switching speeds for portable and computing applications. This specific model provides a cost-effective solution for integrating multiple switch functions into space-constrained designs while maintaining signal integrity standards.

Replacement Considerations

The SN74CBTLV3257DR serves as a verified alternative within the same product family. Both parts share identical functional configurations and logical operations. Confirm that the replacement variant meets the specific voltage and temperature requirements of the target application before substitution.