74AC157SJ

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74AC157SJ is a quad 2-input multiplexer housed in a 16-lead Small Outline Package (SOP), EIAJ TYPE II, measuring 5.3mm wide. It operates within a supply voltage range of 2.0V to 6.0V and supports an operating temperature from -40°C to +85°C. The device features outputs capable of sourcing and sinking 24 mA. Propagation delays for the Select-to-Output path are typically 5.5 ns at 5.0V with a maximum of 9.0 ns under specified conditions.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexer architecture allowing selection of four bits of data from two sources using common Select and Enable inputs.
• Outputs present selected data in true form and support high drive currents of 24 mA source/sink capability.
• Function generator capability enables implementation of gating functions by generating sixteen different functions of two variables.

Signal Switches, Multiplexers, Decoders Applications

• Moving data between two groups of registers to four common output busses
• Implementing gating functions as a function generator
• Logic implementation of a 4-pole, 2-position switch

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify package designation M16D corresponds to the 16-Lead SOP (EIAJ TYPE II) configuration. Confirm that the specific ordering code matches the AC logic family rather than ACT, as input thresholds differ significantly. Ensure the component meets the required operating temperature range of -40°C to +85°C for the intended environment.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad 2-input multiplexer with high-speed performance and strong drive capability is required. The AC logic family offers lower power consumption compared to older standards while maintaining compatibility with standard logic levels across a wide voltage range. Verify that the 5.3mm wide SOP package fits the available PCB footprint constraints.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AC series of high-speed CMOS logic devices originally manufactured by Fairchild Semiconductor. The 'SJ' suffix specifically identifies the 16-lead Small Outline Package (SOP) variant. The device provides a compact solution for routing digital signals in systems requiring multiple data paths controlled by a single select line.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74ACT157SJ serves as a direct functional substitute within the same package, though it requires a 4.5V to 5.5V supply and features TTL-compatible inputs. Other variants such as the SC (SOIC) or MTC (TSSOP) packages offer identical electrical characteristics but require different physical footprints.