SN74HC158DR

Overview

The SN74HC158DR is a quad 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments in the HC logic series. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range of -40°C to +85°C. The device features inverted outputs capable of driving up to 15 LSTTL loads with ±6 mA drive current at 5 V. Typical propagation delay is 11 ns, with maximum values reaching 32 ns at 6 V. Power consumption is low, with a maximum ICC of 80 µA.

Feature Summary

• Contains four independent multiplexers that select between two data sources based on address inputs.
• Features a separate strobe input for enabling or disabling output selection.
• Provides inverted data outputs through integrated inverters and drivers.

Applications

• Data routing and selection in digital logic circuits
• Address decoding applications
• Parallel-to-serial conversion systems

Procurement Notes

Verify the active status of the SN74HC158DR via official Texas Instruments documentation before procurement. Confirm RoHS compliance and lead finish specifications (NIPDAU) match design requirements. Ensure the SOIC-16 package dimensions align with PCB layout constraints. Check for any specific environmental certifications required for the target application.

Selection Notes

Select this component when a quad multiplexer with inverted outputs is required in CMOS technology. It is suitable for designs needing wide voltage operation from 2 V to 6 V. Consider the typical 11 ns propagation delay for timing-critical paths. Verify that the 80 µA max ICC meets power budget constraints compared to other logic families.

Part Context

This part belongs to the SN74HC158 family of data selectors. It is functionally compatible with other HC-series multiplexers but distinguished by its quad configuration and inverted outputs. The 'DR' suffix indicates it is packaged in a SOIC-16 reel format for surface-mount assembly.

Replacement Considerations

SN74HC158D is a tube-packaged equivalent. SN74HC158NSR and SN74HC158PWR are alternative packages (SOP and TSSOP) with identical functionality.

FAQ

What is the logic state of the outputs?

The SN74HC158 provides inverted data outputs.

How many data sources can be selected?

It contains four multiplexers, each selecting from two data sources (A and B).