74ACT157SC

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74ACT157SC is a quad 2-input multiplexer housed in a 16-lead Small Outline Integrated Circuit (SOIC) package. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature from -40°C to +85°C. The device features TTL-compatible inputs, outputs capable of sourcing or sinking 24 mA, and propagation delays ranging from 5.5 ns to 10.0 ns at 5.0V with a 50 pF load.

Signal Switches, Multiplexers, Decoders Feature Summary

• TTL-compatible input thresholds for direct interfacing with standard logic families
• Outputs provide high drive capability by sourcing and sinking up to 24 mA
• Reduced quiescent current and output impedance compared to previous generations

Signal Switches, Multiplexers, Decoders Applications

• Routing data between two groups of registers to common output buses
• Implementing gating functions as a function generator
• Selecting four bits of data from two sources using common control lines

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering code suffix against the manufacturer's documentation to confirm the exact package type and tape/reel specifications. Ensure that the selected component meets the required voltage and temperature ratings for the intended application environment before finalizing procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad 2-input multiplexer with TTL-compatible inputs is required. Consider the 16-lead SOIC package dimensions and the 4.5V to 5.5V operating voltage range. Evaluate the 24 mA output drive capability and propagation delay characteristics against system timing requirements.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AC/ACT series of high-speed CMOS logic devices. The ACT variant specifically provides TTL-compatible inputs while maintaining AC performance levels. The 74ACT157 implements a quad 2-input multiplexer function, allowing selection between two data sources for four independent channels.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes include MC74ACT157DR2G from onsemi and 74ACT157D from Texas Instruments.