74AHC157BQ,115

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74AHC157BQ,115 is a high-speed Si-gate CMOS quad 2-input multiplexer housed in a DHVQFN16 (SOT763-1) package. It selects four bits of data from two sources under the control of a common data select input (S). The enable input (E) is active LOW; when HIGH, all outputs are forced LOW. Operating with CMOS input levels, it supports a supply voltage range of 2.0 V to 5.5 V. Propagation delays reach 8.4 ns at 5 V and 13.2 ns at 3.3 V with a 50 pF load. It operates within an ambient temperature range of -40 °C to +125 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Balanced propagation delays for consistent signal timing across channels
• All inputs feature Schmitt-trigger action for noise immunity
• Inputs accept voltages higher than VCC for flexible interfacing
• Multiple input enable capability facilitates easy circuit expansion

Signal Switches, Multiplexers, Decoders Applications

• Moving data between groups of registers to common output buses
• Memory chip select decoding
• Function generator implementation
• Logic implementation of a 4-pole, 2-position switch

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct package type and temperature rating. Confirm that the DHVQFN16 variant matches the required thermal pad soldering specifications. Cross-reference the full part number with official Nexperia databases to validate RoHS compliance status and REACH declarations prior to final procurement decisions.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad multiplexer compatible with Low Power Schottky TTL pinouts is required. Ensure the design utilizes CMOS input logic levels rather than TTL levels, as the AHCT variant handles the latter. Verify that the operating environment stays within the specified -40 °C to +125 °C range and that power dissipation limits for the DHVQFN16 package are respected during operation.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the 74AHC/AHCT157 family of quad 2-input multiplexers. It is designed as a high-speed replacement for legacy logic families while maintaining pin compatibility with LSTTL devices. The BQ suffix specifically denotes the DHVQFN16 plastic dual in-line compatible thermal enhanced very thin quad flat package without leads.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74AHCT157BQ,115 serves as a functional equivalent requiring TTL-compatible input levels instead of CMOS levels.