CD74HC147M Priority Encoder Equivalent & Substitute Parts

Part Overview

The CD74HC147M is a priority encoder integrated circuit manufactured by Texas Instruments, categorized as a Logic component with 1 x 10:4 encoding configuration in a 16-SOIC surface mount package. This device is discontinued at DiGi Electronics, making substitute parts necessary for ongoing production and maintenance applications. The CD74HC147M remains available through alternative packaging and distribution channels via direct manufacturer equivalents.

Substiute Parts

CD74HC147M

Texas InstrumentsIn Stock: 1289CD74HC147M Datasheet

Current PartRFQ

CD74HC147M96

Texas InstrumentsIn Stock: 15406CD74HC147M96 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CD74HC147M96 qualifies as a direct substitute based on the following matching parameters:

• Identical base product number (74HC147)
• Identical circuit configuration (1 x 10:4 priority encoder)
• Identical package type (16-SOIC with 0.154" width, 3.90mm)
• Identical voltage supply range (2V ~ 6V)
• Identical operating temperature range (-55°C ~ 125°C)
• Identical output current specifications (5.2mA high, 5.2mA low)
• Identical RoHS3 compliance status
• Identical MSL rating (1 - Unlimited)

The primary difference is packaging format: CD74HC147M is supplied in Tube packaging, while CD74HC147M96 is available in Cut Tape (CT), Digi-Reel®, and Tape & Reel (TR) formats. The CD74HC147M96 maintains Active part status with higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC147M96 is the direct equivalent for CD74HC147M applications. Selection between these parts should be based on packaging and supply requirements:

• CD74HC147M96 is recommended for new designs and ongoing production due to Active part status and multiple packaging options (Cut Tape, Digi-Reel®, Tape & Reel).
• Both parts meet ROHS3 compliance and REACH unaffected status, suitable for regulated applications.
• The identical electrical specifications (voltage range, temperature range, output current) ensure functional interchangeability in all circuit applications.
• Packaging format selection (Tube vs. Tape & Reel) depends on assembly process requirements and volume considerations.

Frequently Asked Questions (FAQ)

Q: Can CD74HC147M96 replace CD74HC147M in existing designs? A: Yes. The CD74HC147M96 is electrically and mechanically identical to the CD74HC147M. Both use the same 16-SOIC package, voltage specifications, temperature range, and output current ratings. The only difference is packaging format.

Q: What is the difference between Tube and Tape & Reel packaging? A: Tube packaging is used for manual handling and smaller quantities. Tape & Reel (TR) and Cut Tape (CT) formats are designed for automated assembly processes and higher-volume production. The component itself is identical.

Q: Are there compliance differences between these parts? A: No. Both CD74HC147M and CD74HC147M96 carry identical RoHS3 compliance, REACH unaffected status, and MSL rating (1 - Unlimited). They are suitable for the same regulated applications.

Q: Why is CD74HC147M discontinued while CD74HC147M96 remains active? A: The discontinuation reflects distribution channel changes rather than product obsolescence. The CD74HC147M96 in Tape & Reel format is the active equivalent maintained by Texas Instruments for ongoing supply.

Q: Can I use these parts in applications requiring -55°C to 125°C operation? A: Yes. Both parts are rated for the full -55°C to 125°C operating temperature range and are suitable for industrial and extended temperature applications.

Q: What are the voltage supply requirements? A: Both parts operate with a single supply voltage in the range of 2V to 6V, making them compatible with standard logic supply voltages including 3.3V and 5V systems.