74AHCT157D-Q100J

Signal Switches, Multiplexers, Decoders Overview

The 74AHCT157D-Q100J is a quad 2-input multiplexer manufactured by Nexperia, utilizing high-speed Si-gate CMOS technology. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts TTL input levels. The device features an active LOW enable input (E) that forces outputs LOW when HIGH. It selects four bits of data from two sources under the control of a common data select input (S). Qualified to AEC-Q100 Grade 1 standards, it supports ambient temperatures from -40 °C to +125 °C and is housed in a SO16 plastic small outline package.

Signal Switches, Multiplexers, Decoders Feature Summary

• AEC-Q100 Grade 1 qualification for automotive applications
• TTL input level compatibility with Schmitt-trigger action on all inputs
• Active LOW enable input for output control
• Overvoltage tolerant inputs accepting voltages higher than VCC

Signal Switches, Multiplexers, Decoders Applications

• Moving data between two groups of registers to four common output buses
• Memory chip select decoding
• Irregular logic implementation generating functions of two variables
• Logic implementation of a 4-pole, 2-position switch

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'J' against official Nexperia documentation to confirm packaging details, as datasheets list standard suffixes like '118'. Confirm the SO16 package type matches design requirements. Ensure the AHCT variant is selected for TTL interface compatibility rather than the AHC CMOS version. Check current product status to ensure production availability.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL logic interfacing is required at 5V operation. The AHCT series provides balanced propagation delays and Schmitt-trigger inputs for noise immunity. Verify that the 4.5V to 5.5V supply range aligns with system power rails. Consider the SO16 package dimensions for PCB layout constraints compared to TSSOP or QFN alternatives.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the Nexperia 74AHC/AHCT157-Q100 family of quad 2-input multiplexers. It is pin-compatible with Low Power Schottky TTL (LSTTL) devices. The family includes variants such as 74AHC157D-Q100 for CMOS inputs and other package options like TSSOP16 and DHVQFN16, all sharing the same functional core but differing in input thresholds and physical form factors.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes include the 74AHC157D-Q100 if CMOS input levels are acceptable, or the 74AHCT157PW-Q100 for identical functionality in a TSSOP16 package. Cross-reference with other manufacturers' 74AHCT157 equivalents ensuring AEC-Q100 compliance if automotive use is intended.