74AC157SCX

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74AC157SCX is a high-speed quad 2-input multiplexer housed in a 16-lead Small Outline Integrated Circuit (SOIC) package. It selects four bits of data from two sources using common Select and Enable inputs, presenting the selected data in true form. The device operates within a supply voltage range of 2.0V to 6.0V and supports an operating temperature range of -40°C to +85°C. Propagation delays vary by input path: S to Zn ranges from 1.5ns to 13.0ns, E to Zn from 1.5ns to 12.0ns, and In to Zn from 1.0ns to 9.0ns at 5.0V with 50pF load.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexer architecture allowing selection of four bits from two sources via common control lines
• Outputs source and sink up to 24 mA for robust driving capability
• Reduced quiescent current and output impedance compared to standard AC logic families
• Function generator capability for implementing gating functions

Signal Switches, Multiplexers, Decoders Applications

• Moving data between two groups of registers to common output busses
• Implementing gating functions as a function generator
• High-speed data routing in digital systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering code suffix 'X' indicates tape and reel packaging when sourcing this component. Confirm that the SOIC-16 package matches the M16A designation in the datasheet. Ensure the application environment stays within the specified 2.0V to 6.0V supply voltage and -40°C to +85°C temperature limits to maintain reliability.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this part for applications requiring a quad 2-input multiplexer with high-speed performance and moderate drive strength. It is suitable for designs needing reduced power consumption and lower output impedance. Consider the propagation delay specifications relative to the system clock speed and ensure the 16-lead SOIC footprint fits the PCB layout constraints.

Signal Switches, Multiplexers, Decoders Part Context

This component belongs to the 74AC logic family, known for high-speed CMOS operation. It is manufactured under the Fairchild Semiconductor brand, now part of onsemi. The device serves as a fundamental building block for digital signal routing and switching applications, offering a compact solution for managing multiple data inputs in integrated circuits.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74ACT157SCX is a compatible variant within the same series, featuring TTL-compatible inputs but restricted to a 4.5V to 5.5V supply range. Verify voltage compatibility before substitution. Other packages like TSSOP or PDIP are available under different ordering codes but require physical footprint changes.