CD74HC147NSR

Signal Switches, Multiplexers, Decoders Overview

The CD74HC147NSR is a high-speed CMOS logic component manufactured by Texas Instruments, functioning as a 10-line to 4-line priority encoder. It operates within a supply voltage range of 2 V to 6 V and supports surface-mount installation in an SOIC-16 package. The device features buffered inputs and outputs with a typical propagation delay of 13 ns at VCC = 5V, CL = 15pF, and TA = 25°C. It is designed for operation across a temperature range from -55°C to +125°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Encodes ten input lines into a four-bit binary-coded decimal output using priority encoding logic.
• Utilizes buffered inputs and outputs to maintain signal integrity and drive capability.
• Constructed with high-speed CMOS technology for efficient power consumption and fast switching speeds.

Signal Switches, Multiplexers, Decoders Applications

• Digital systems requiring conversion of decimal inputs to binary codes
• Keyboard encoding circuits in computing peripherals
• Data multiplexing and decoding applications

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix NSR confirms the SOIC-16 package and tape-and-reel packaging format. Ensure compatibility with the required operating voltage range of 2 V to 6 V. Confirm that the component meets RoHS standards if environmental compliance is mandatory for the assembly process. Cross-reference the manufacturer part number against official Texas Instruments documentation to validate authenticity and revision status.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a single IC must handle ten distinct input signals and provide a corresponding four-bit encoded output. The HC series offers a balance of speed and power efficiency suitable for general-purpose digital logic. Consider the wide operating temperature range if the application involves harsh environmental conditions. Verify that the SOIC-16 footprint fits the available board space and routing constraints.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the Texas Instruments CD74HC family of high-speed CMOS logic devices. The CD74HC147 specifically addresses the need for priority encoding in digital designs. It is part of a broader ecosystem of logic gates and encoders designed for interoperability within standard CMOS logic families.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Compatible substitutes include other 10-to-4 line priority encoders from the same logic family or equivalent parts from other manufacturers, provided pinouts and electrical characteristics match. Verify functional equivalence regarding propagation delay and output drive current before substitution.

Signal Switches, Multiplexers, Decoders FAQ

What is the logic function of the CD74HC147NSR?

It functions as a 10-line to 4-line priority encoder, converting decimal inputs into a binary-coded decimal output.

What is the typical propagation delay for this component?

The typical propagation delay is 13 ns when measured at VCC = 5V, CL = 15pF, and TA = 25°C.