74ACT158SJX

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74ACT158SJX is a quad 2-input multiplexer from the 74ACT logic family, housed in a 16-lead Plastic Dual-In-Line (PDIP) package. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range of -40°C to +85°C. The device features TTL-compatible inputs and outputs capable of sourcing or sinking 24 mA. Propagation delays are specified at 9.5 ns maximum for data paths and 10.5 ns for enable control under standard test conditions.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexing architecture with common Select and Enable controls
• TTL-compatible input thresholds for direct interface with legacy logic families
• High drive capability allowing direct load driving without intermediate buffers

Signal Switches, Multiplexers, Decoders Applications

• Routing data between two register groups to common output buses
• Implementing gating functions as a function generator
• Selecting four bits of data from dual sources for inverted presentation

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the PDIP package designation against current inventory, as the 'X' suffix indicates tape and reel availability which may differ from tube packaging. Confirm RoHS compliance status through official documentation before integration. Ensure the specific manufacturing lot aligns with project reliability requirements given the component's historical release date.

Signal Switches, Multiplexers, Decoders Selection Notes

Choose this component when high-speed switching between two data sources is required with TTL compatibility. The inverted output configuration must be accounted for in downstream logic design. Verify that the 24 mA drive current meets load requirements without exceeding absolute maximum ratings. Consider the PDIP form factor for prototyping or through-hole assembly needs.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74ACT series of high-speed CMOS logic devices originally developed by Fairchild Semiconductor. The ACT series offers performance comparable to TTL but with lower power consumption. The 74ACT158 specifically provides quad multiplexing functionality, serving as a critical interface component in digital systems requiring data selection and routing capabilities.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Equivalent parts include the 74ACT158PC and 74ACT158SC from the same manufacturer family. Cross-vendor alternatives such as the SN74ACT158N should be verified for pinout and electrical characteristic compatibility before substitution.