SN74HC158D

Overview

The SN74HC158D is a quad 2-line to 1-line data selector/multiplexer from the Texas Instruments HC logic family. It features inverted outputs and a separate strobe input for device control. The component operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range of -40°C to +85°C. Electrical characteristics include a maximum propagation delay of 32 ns at 4.5 V with a 50 pF load, low power consumption with a maximum ICC of 80 µA, and output drive capabilities up to ±6 mA at 5 V.

Feature Summary

• Contains four independent multiplexers that select between two data sources based on common select lines.
• Provides inverted data outputs routed through integrated inverters and drivers.
• Includes a dedicated strobe input to enable or disable all four output gates simultaneously.

Applications

• Routing multiple digital signals to a single processing line
• Implementing parallel-to-serial data conversion circuits
• Address decoding in memory systems

Procurement Notes

Verify the specific ordering suffix against the current Package Option Addendum, as the 'SN74HC158D' designation indicates an obsolete status. Confirm availability of active alternatives such as the SN74HC158DR or SN74HC158N. Ensure compliance with RoHS standards and check lead finish specifications like NIPDAU for solderability requirements during procurement.

Selection Notes

Select this component when a design requires four independent 2-to-1 multiplexing functions within a single package. Verify that the system voltage falls within the 2 V to 6 V operational range. Consider the 32 ns propagation delay limit for timing constraints. Ensure unused inputs are tied to VCC or GND to maintain proper CMOS operation and prevent floating states.

Part Context

This device belongs to the SN74HC158 series of high-speed CMOS logic products manufactured by Texas Instruments. It is part of the broader 74HC family designed for general-purpose digital applications. The D suffix specifically denotes the SOIC (Small Outline Integrated Circuit) surface-mount package variant.

Replacement Considerations

Public confirmed substitute part numbers: SN74HC158DR, SN74HC158N, SN74HC158NSR, SN74HC158PWR.