CD74HC147PW

Signal Switches, Multiplexers, Decoders Overview

The CD74HC147PW is a high-speed CMOS 10-line to 4-line priority encoder manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features a TSSOP-16 surface-mount package. The device exhibits a propagation delay of 32 ns and supports an operating temperature range from -55 °C to +125 °C. It provides one independent circuit for encoding nine active-low inputs into a four-bit BCD output.

Signal Switches, Multiplexers, Decoders Feature Summary

• Encodes nine active-low input lines into a corresponding four-bit binary-coded decimal (BCD) output.
• Implements priority logic where the highest-order active input determines the output state.
• Utilizes high-speed CMOS technology compatible with standard CMOS logic families.

Signal Switches, Multiplexers, Decoders Applications

• Keyboard encoding circuits
• Interrupt request prioritization systems
• Data acquisition input multiplexing

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific ordering suffixes that may indicate tape-and-reel packaging versus tube quantities. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a single-chip solution is required to convert ten discrete input signals into a compact four-bit digital code. Consider the wide operating voltage range and extended temperature specifications for industrial environments. Verify pin compatibility if replacing legacy variants in existing printed circuit board layouts.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the CD74HC147 family of priority encoders produced by Texas Instruments. It is designed for general-purpose digital logic applications requiring efficient signal compression. The device is part of the broader 74HC series, ensuring interoperability with other standard logic components in mixed-signal designs.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Public confirmed substitute part numbers include CD74HC147PWR and CD74HC147PWT. These alternatives offer equivalent electrical characteristics and functional performance suitable for direct replacement in compatible designs.

Signal Switches, Multiplexers, Decoders FAQ

What is the logic function of the CD74HC147PW?

It functions as a 10-line to 4-line priority encoder, converting nine active-low inputs into a four-bit BCD output based on the highest-priority active signal.

Does the CD74HC147PW support active-high outputs?

No, the device typically provides active-low outputs consistent with its active-low input configuration for standard BCD encoding applications.