74AHCT157BQ-Q100X

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74AHCT157BQ-Q100X is a high-speed Si-gate CMOS quad 2-input multiplexer. It selects 4 bits of data from two sources under the control of a common data select input (S). The enable input (E) is active LOW, forcing outputs LOW when HIGH. This device operates with TTL input levels and is specified for supply voltages between 4.5 V and 5.5 V. It is housed in a DHVQFN-16 package (SOT763-1) and qualified to AEC-Q100 Grade 1 standards.

Signal Switches, Multiplexers, Decoders Feature Summary

• Automotive product qualification in accordance with AEC-Q100 (Grade 1)
• Operates with TTL input levels
• All inputs have Schmitt-trigger action
• DHVQFN package with Side-Wettable Flanks enabling Automatic Optical Inspection

Signal Switches, Multiplexers, Decoders Applications

• Moving data from two groups of registers to four common output buses
• Memory chip select decoding
• Generating any four of the 16 different functions of two variables with one variable common

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix matches the required tape and reel configuration. Confirm that the DHVQFN-16 package variant aligns with the PCB footprint design. Ensure the automotive grade qualification meets the specific project requirements. Check the most recent datasheet revision for any updates to pinning or electrical characteristics before finalizing the bill of materials.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL logic compatibility is required within an automotive environment. The AHCT series ensures proper voltage level translation compared to standard AHC devices. Verify that the operating temperature range covers the intended application conditions. Consider the small form factor of the DHVQFN package for space-constrained designs requiring side-wettable flanks for inspection.

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 with different packages such as SO16 and TSSOP16, but this specific model utilizes the DHVQFN-16 package. All members are designed for high-speed operation and robust ESD protection.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74AHCT157PW-Q100 serves as a functional replacement using the TSSOP16 package. The 74AHCT157D-Q100 offers the same functionality in an SO16 package. These alternatives maintain identical logical operations and electrical specifications while differing only in physical housing dimensions.