CD74HC147PWT

Signal Switches, Multiplexers, Decoders Overview

The CD74HC147PWT is a high-speed CMOS logic device manufactured by Texas Instruments, functioning as a 10-line to 4-line priority encoder. It utilizes silicon gate CMOS technology and operates within a supply voltage range of 2 V to 6 V. The component supports an extended operating temperature range from -55°C to +125°C. It features low power consumption and provides bus driver outputs capable of driving multiple loads. The device is housed in a 16-pin Thin-Shrink Small-Outline Package (TSSOP) and is supplied in tape and reel packaging for automated surface-mount assembly.

Signal Switches, Multiplexers, Decoders Feature Summary

• Implements 10-to-4 line priority encoding using nine active-low inputs with an implicit decimal zero function
• Utilizes high-speed silicon gate CMOS technology for rapid data processing and transmission
• Features bus driver outputs designed to drive multiple LSTTL loads directly
• Supports wide industrial and automotive temperature ranges for stable operation

Signal Switches, Multiplexers, Decoders Applications

• Encoding multiple input signals into binary-coded decimal formats
• Keyboard encoding systems requiring priority handling of simultaneous key presses
• Industrial control interfaces converting discrete input states to digital codes
• Automotive electronics applications demanding wide temperature tolerance

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix PWT indicates tape and reel packaging configuration. Confirm RoHS compliance status and lead times through authorized distributors. Ensure the ordering part number matches the required package type and moisture sensitivity level for your manufacturing process.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a 10-input priority encoder is required with CMOS compatibility. It serves as a direct replacement for legacy TTL encoders due to pin compatibility. Consider the HC series for broader voltage flexibility compared to HCT variants. Verify output drive requirements against connected load specifications.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the Texas Instruments CD74HC147 family of high-speed CMOS logic components. The family includes variants such as CD74HC147PW and CD74HC147PWR, differing primarily in packaging and shipping configurations. These devices are engineered to replace older Low-Power Schottky TTL logic while offering lower power dissipation and higher noise immunity.

Signal Switches, Multiplexers, Decoders Replacement Considerations

CD74HC147PWR is listed as a parameter-equivalent alternative. CD74HC147PW is noted as obsolete with available substitutes.