SN74LVC257AMPWREP

Overview

The SN74LVC257AMPWREP is a quadruple 2-line to 1-line data selector/multiplexer with 3-state outputs manufactured by Texas Instruments. It belongs to the LVC logic series and features a TSSOP-14 package, although it contains four independent circuits. The device operates within a supply voltage range of 1.65 V to 5.5 V. Key electrical parameters include a maximum propagation delay of 4.6 ns at 3.3 V, low static current of 10 uA, and an output ground bounce (VOLP) typically less than 0.8 V. It supports extended temperature performance from -55°C to +125°C.

Feature Summary

• Provides quadruple 2-to-1 data selection capability with three-state outputs for efficient bus sharing.
• Operates across a wide supply voltage range from 1.65 V to 5.5 V for compatibility with various logic families.
• Features low power consumption with minimal static current draw during operation.
• Designed for high-speed applications with propagation delays as low as 4.6 ns at 3.3 V.

Applications

• Data routing in embedded systems requiring multiple input selection.
• Bus-oriented memory addressing and control logic.
• Signal switching in communication interfaces.
• General-purpose digital logic multiplexing in consumer electronics.

Procurement Notes

Verify the exact ordering suffix 'REP' indicates military/extended reliability grade specifications compared to standard commercial variants. Confirm package type is TSSOP-14 despite the 'quad' designation implying multiple circuits; cross-reference datasheet mechanical drawings. Ensure supplier documentation matches the specific TI part number SN74LVC257AMPWREP to avoid confusion with non-rep variants.

Selection Notes

Select this component when quadruple 2-to-1 multiplexing with three-state outputs is required in space-constrained designs. The LVC series offers speed and power efficiency suitable for battery-operated devices. Consider the extended temperature range (-55°C to +125°C) if operating in harsh environments. Verify voltage levels match system requirements between 1.65 V and 5.5 V.

Part Context

This part is part of the SN74LVC257A family of multiplexers. The 'REP' suffix typically denotes a reliability-enhanced or military-grade version produced under specific quality controls. It shares functional similarities with other LVC series logic but is distinct in its packaging and potential environmental ratings compared to standard commercial equivalents like SN74LVC257APWR.

Replacement Considerations

SN74LVC257APWRG4 is a compatible alternative within the same logic family offering similar functionality. Check if the standard commercial grade meets application requirements instead of the REP variant. Ensure pinout compatibility remains identical for direct substitution without PCB redesign.