74ACT157SJX

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74ACT157SJX is a quad 2-input multiplexer belonging to the ACT logic family. It features four independent data selectors controlled by common Select and Enable inputs, providing true non-inverted outputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -40°C to +85°C. Key electrical parameters include a propagation delay of up to 9.5 ns from Select to Output at 5.0 V with 50 pF load, output source/sink current capability of 24 mA, and maximum quiescent supply current of 40 µA.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexer architecture with common Select and active-LOW Enable control
• TTL-compatible inputs for direct interface with standard logic families
• High drive capability with 24 mA output source and sink currents
• Reduced power consumption with 50% lower ICC and IOZ compared to previous generations

Signal Switches, Multiplexers, Decoders Applications

• Moving data between two groups of registers to common output busses
• Function generation implementing gating functions
• Broadband access system components
• Medical electronics and devices
• Test and measurement equipment

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'SJX' against manufacturer documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status through official material composition documents. Check for obsolescence notices or lifecycle changes directly from onsemi channels before procurement planning.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad 2-input multiplexer with TTL-compatible inputs is required. Ensure the design operates within the 4.5 V to 5.5 V supply range. Verify that the SOP-14 package fits the PCB layout constraints. Consider the 24 mA drive strength for load requirements and the propagation delay limits for timing-critical applications.

Signal Switches, Multiplexers, Decoders Part Context

The 74ACT157 series represents high-speed quad multiplexers in the ACT logic family. The SJX designation indicates a Small Outline Package (SOP) variant, specifically EIAJ TYPE II, 5.3mm wide. This part is part of a broader family including AC and ACT variants with different speed and power characteristics, available in SOIC, TSSOP, and PDIP packages.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Compatible substitutes include other 74ACT157 variants from onsemi or Fairchild, such as 74ACT157SCX (SOIC) or 74ACT157MTCX (TSSOP), provided pinout compatibility is verified. Cross-manufacturer equivalents must match the ACT logic family specifications and SOP-14 package dimensions.