SN74HC157NE4

Overview

The SN74HC157NE4 is a quadruple 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and supports an operating temperature from -40°C to +85°C. The device features low power consumption with a maximum ICC of 80µA and typical propagation delay of 11ns at 5V. Outputs can drive up to 15 LSTTL loads, providing ±6mA output drive at 5V. It utilizes a 16-pin PDIP package.

Feature Summary

• Contains four independent 2-to-1 multiplexers controlled by a common address select input
• Features TTL-compatible CMOS inputs for direct interfacing with standard logic families
• Includes an active-low strobe input that forces all outputs to a low state

Applications

• Multiplexing and routing 4-bit data buses between source devices
• Data selection in system controller architectures
• General-purpose digital signal switching applications

Procurement Notes

Verify the component matches the specific SN74HC157NE4 designation, ensuring it corresponds to the PDIP-16 package variant rather than surface-mount options like SOIC or TSSOP. Confirm the presence of the 'E4' suffix indicates lead-free compliance and tin/plated copper finish as per the manufacturer's packaging addendum. Cross-reference the orderable part number against current production status lists to ensure availability.

Selection Notes

Select this component when a through-hole solution is required for quadruple data selection. It is suitable for designs needing compatibility with both CMOS and TTL logic levels. Consider the 16-pin DIP form factor for prototyping or legacy board layouts where surface mount technology is not feasible. Ensure the application environment remains within the specified commercial temperature range.

Part Context

This part belongs to the SNx4HC157 family of high-speed silicon gate CMOS multiplexers. The 'N' suffix designates the plastic dual-in-line package (PDIP), while the 'E4' suffix typically denotes environmental compliance and specific lead finish characteristics defined by Texas Instruments. It serves as a standard logic IC for managing multiple data inputs in digital systems.

Replacement Considerations

SN74HC157N is the primary equivalent without the environmental suffix. SN74HC157PWR offers the same functionality in a TSSOP package. SN74HC157DR provides the function in a SOIC package. Verify pinout compatibility and thermal requirements when substituting across different package types.