74AC11257N

Signal Switches, Multiplexers, Decoders Overview

The Texas Instruments SN74AC11257N is a quad 2-to-1 data selector/multiplexer with three-state outputs, belonging to the AC logic series. It features a TSSOP-20 package and supports a supply voltage range of 3 V to 5.5 V. The device operates within an industrial temperature range of -40°C to +85°C. Key electrical parameters include a propagation delay of 6.5 ns and output currents of ±24 mA. It contains four independent circuits, each selecting between two inputs based on control signals.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad configuration providing four independent 2-to-1 multiplexing channels
• Three-state outputs for bus-oriented communication applications
• CMOS technology ensuring low power consumption and high noise immunity

Signal Switches, Multiplexers, Decoders Applications

• Bus-oriented systems requiring data routing
• Portable battery-powered equipment due to low power characteristics
• High-speed digital signal processing applications

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific package type against design requirements, as the N suffix typically denotes a PDIP package while other variants use TSSOP or SOIC. Confirm RoHS compliance status through official documentation before integration. Ensure input voltage levels match the specified 3 V to 5.5 V range for reliable operation across the full temperature spectrum.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when multiple independent data paths are required in a compact form factor. The AC series offers a balance of speed and power efficiency suitable for general-purpose logic applications. Consider the PDIP package availability if through-hole mounting is necessary for prototyping or specific mechanical constraints.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AC11257 family of multiplexers from Texas Instruments. It is functionally similar to the 74AC157 but includes three-state outputs for enhanced bus compatibility. The AC series represents an advancement over standard HC logic with faster switching speeds and wider operating voltage ranges.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AC157N: Similar quad multiplexer without three-state outputs. SN74ACT11257N: ACT variant with TTL-compatible input thresholds. Verify pinout compatibility and electrical specifications before substitution.