74ACT158SCX

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74ACT158SCX 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 inverted form at the outputs. The device operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range of -40°C to +85°C. Key electrical characteristics include TTL-compatible inputs, output source/sink currents of 24 mA, and propagation delays ranging from 1.0 ns to 11.0 ns depending on the signal path.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexer architecture with common Select and active-LOW Enable control
• Outputs present selected data in inverted form
• TTL-compatible input thresholds for direct interfacing
• Reduced quiescent current consumption compared to standard ACT logic

Signal Switches, Multiplexers, Decoders Applications

• Moving data between two groups of registers to common output buses
• Implementing gating functions as a function generator
• Selecting data sources in digital logic circuits

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'SCX' corresponds to the SOIC-16 package and tape/reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the design accounts for the inverted output polarity inherent to this component's logic implementation.

Signal Switches, Multiplexers, Decoders Selection Notes

Choose this component when a quad 2-input multiplexer with inverted outputs is required. It is suitable for applications needing TTL-compatible inputs and moderate drive strength. Consider alternative packages such as SOP or TSSOP if board space constraints differ from the SOIC-16 footprint requirements.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74ACT family of logic devices, characterized by CMOS technology with TTL-compatible inputs. The 74ACT158 specifically implements a quad multiplexer function. Other variants in the series may offer different package styles or non-inverted outputs, but share similar electrical performance profiles.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74ACT158PC is a documented equivalent offering the same logical function in a 16-Lead Small Outline Package (SOP). Verify pinout compatibility and package dimensions before substitution.