74HC147D,652 Priority Encoder Equivalent & Substitute Parts

Part Overview

The 74HC147D,652 is a priority encoder logic integrated circuit manufactured by NXP USA Inc., configured as a 1 x 10:4 priority encoder in a 16-SO surface mount package. This component is classified as obsolete, which necessitates identification of functionally equivalent substitute parts for ongoing design support and procurement continuity. The 74HC147 series priority encoder performs decimal-to-binary encoding with priority resolution, making it suitable for applications requiring input prioritization and binary output conversion.

Substiute Parts

74HC147D,652

NXP USA Inc.In Stock: 68174HC147D,652 Datasheet

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CD74HC147M

Harris CorporationIn Stock: 1219CD74HC147M Datasheet

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CD74HC147M96

Texas InstrumentsIn Stock: 15406CD74HC147M96 Datasheet

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CD74HC147MT

Texas InstrumentsIn Stock: 1319CD74HC147MT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HC147D,652 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Parameters:

• Circuit configuration: 1 x 10:4 priority encoder function
• Output current specifications: 5.2mA high and low
• Voltage supply range: 2V ~ 6V
• Logic family: 74HC series

Mechanical Parameters:

• Package type: 16-SOIC surface mount
• Physical dimensions: 0.154" width, 3.90mm width
• Mounting compatibility: Surface mount technology

Environmental Parameters:

• Operating temperature range compatibility
• Moisture sensitivity level
• Regulatory compliance (RoHS, REACH, ECCN)

All substitute parts listed maintain identical electrical function, package footprint, and pin configuration, enabling direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CD74HC147M96 (Texas Instruments)

The CD74HC147M96 is the recommended substitute for new designs and procurement. This part maintains active product status, ensuring long-term availability and supply chain stability. It carries ROHS3 compliance and REACH unaffected certification, meeting current regulatory requirements. The extended operating temperature range (-55°C ~ 125°C) provides broader environmental coverage compared to the original part. Inventory availability of 15,380 pieces supports immediate procurement needs.

Secondary Substitute: CD74HC147MT (Texas Instruments)

The CD74HC147MT provides equivalent electrical and mechanical specifications with ROHS3 compliance and REACH unaffected status. However, this part is discontinued at DiGi Electronics, limiting long-term procurement viability. Use this substitute only when CD74HC147M96 availability is constrained.

Not Recommended: CD74HC147M (Harris Corporation)

The CD74HC147M, while functionally equivalent, carries RoHS non-compliant status and lacks specified REACH documentation. This part is obsolete and does not meet current regulatory compliance requirements for new designs.

Frequently Asked Questions (FAQ)

Q: Can CD74HC147M96 replace 74HC147D,652 in existing designs?

A: Yes. Both parts share identical circuit configuration (1 x 10:4 priority encoder), package type (16-SOIC), electrical specifications (5.2mA output current, 2V ~ 6V supply), and pin assignments. Direct substitution is electrically and mechanically compatible.

Q: What is the difference between CD74HC147M96 and CD74HC147MT?

A: Both parts are manufactured by Texas Instruments with identical electrical and mechanical specifications. The primary difference is product status: CD74HC147M96 is active with robust inventory (15,380 pieces), while CD74HC147MT is discontinued at DiGi Electronics with limited inventory (1,297 pieces). CD74HC147M96 is preferred for new procurement.

Q: Does the extended operating temperature range of substitute parts affect compatibility?

A: No. The substitute parts operate across -55°C ~ 125°C, which encompasses the original part's -40°C ~ 125°C range. This extended range provides additional environmental margin without affecting circuit operation within the original specifications.

Q: Are there compliance differences between the main part and substitutes?

A: Yes. The original 74HC147D,652 is ROHS3 compliant. CD74HC147M96 and CD74HC147MT maintain ROHS3 compliance. CD74HC147M is RoHS non-compliant and should not be used in applications requiring RoHS certification.

Q: What packaging options are available for substitute parts?

A: CD74HC147M96 is supplied in Cut Tape (CT) and Digi-Reel packaging. CD74HC147MT is supplied in Cut Tape (CT) and Digi-Reel packaging. Both support standard surface mount assembly processes.