SN74HC158PWT

Overview

The SN74HC158PWT is a quad 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range from -40°C to +85°C. The device features inverted outputs, a separate strobe input (G), and inputs A/B for source selection. Electrical characteristics include a maximum propagation delay of 32 ns at 4.5 V with a 50 pF load, a typical power dissipation capacitance of 40 pF, and a maximum static current of 80 µA. It is housed in a TSSOP-16 package.

Feature Summary

• Contains four independent multiplexers that route a 4-bit word from one of two sources to the outputs based on the select line.
• Outputs provide inverted data signals relative to the selected input state.
• Includes a dedicated strobe input that controls the enablement of all four output gates simultaneously.

Applications

• Data routing between multiple signal sources
• Address decoding logic circuits
• Parallel-to-serial conversion interfaces

Procurement Notes

Verify the specific ordering suffix 'PWR' corresponds to the TSSOP-16 reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level ratings prior to procurement. Ensure the component meets the required operating temperature range specifications for the intended application environment.

Selection Notes

Select this component when a quad multiplexer with inverted outputs is required. The HC series offers a wide 2 V to 6 V operating voltage range suitable for various logic families. Consider the propagation delay specifications under expected load conditions to ensure timing requirements are met.

Part Context

This part belongs to the SN74HC158 family of high-speed CMOS logic devices. It functions as a data selector/multiplexer providing full data selection capabilities across four independent channels. The device integrates inverters and drivers to supply the necessary drive strength for the output gates.

Replacement Considerations

SN74HC158DR

FAQ

What is the function of the G input?

The G input serves as a separate strobe control that enables or disables the four output gates simultaneously.

Are the outputs active high or inverted?

The outputs provide inverted data relative to the selected input state.