74HC7266D,652 XNOR Logic IC Equivalent & Substitute Parts

Part Overview

The 74HC7266D,652 is a 4-channel, 2-input XNOR (Exclusive NOR) logic integrated circuit manufactured by NXP USA Inc. in 14-SO surface mount packaging. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The 74HC7266 series provides standard logic gate functionality suitable for digital circuit applications requiring XNOR operation across multiple channels.

Substiute Parts

74HC7266D,652

NXP USA Inc.In Stock: 108574HC7266D,652 Datasheet

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CD74HC7266M

Texas InstrumentsIn Stock: 1186CD74HC7266M Datasheet

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CD74HC7266M96

Texas InstrumentsIn Stock: 2756CD74HC7266M96 Datasheet

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CD74HC7266MT

Texas InstrumentsIn Stock: 1147CD74HC7266MT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC7266D,652 is determined by strict equivalence across the following critical parameters:

• Logic type: XNOR (Exclusive NOR) with 4 channels and 2 inputs per channel
• Supply voltage range: 2V ~ 6V
• Quiescent current: 2 µA maximum
• Output current capability: 5.2mA high and low
• Input logic thresholds: Low 0.5V ~ 1.8V, High 1.5V ~ 4.2V
• Package type: 14-SOIC surface mount with identical physical dimensions (0.154", 3.90mm width)
• Environmental compliance: ROHS3 compliant, MSL 1

All substitute parts listed maintain these core electrical and mechanical specifications, ensuring functional and physical interchangeability within the specified operating conditions.

Parameter Comparison

Engineering Selection Recommendations

CD74HC7266M96 (Texas Instruments) is the primary recommended substitute. This part maintains full electrical and mechanical equivalence to the 74HC7266D,652 while offering active product status, ensuring long-term availability and supply chain continuity. The CD74HC7266M96 is supplied in Cut Tape and Digi-Reel packaging formats with 2740 units currently in stock.

CD74HC7266MT (Texas Instruments) provides an alternative substitute with identical electrical specifications and 14-SOIC packaging. This part is classified as obsolete but maintains ROHS3 compliance and MSL 1 rating. Inventory availability is 1102 units.

CD74HC7266M (Texas Instruments) is a secondary option with equivalent electrical performance. This part is discontinued at DiGi Electronics and carries 1103 units in current inventory. Selection of this part should account for potential future availability constraints.

All three Texas Instruments substitutes support extended operating temperature range (-55°C ~ 125°C) compared to the original NXP part (-40°C ~ 125°C), providing enhanced thermal margin for demanding applications. Propagation delay specifications are slightly relaxed at 30ns versus the original 20ns, which remains within acceptable limits for standard logic applications.

Frequently Asked Questions (FAQ)

Q: Can CD74HC7266M96 be used as a direct replacement for 74HC7266D,652?

A: Yes. Both parts share identical logic type (4-channel, 2-input XNOR), supply voltage range (2V ~ 6V), output current capability (5.2mA), input logic thresholds, and 14-SOIC package dimensions. Electrical and mechanical interchangeability is confirmed.

Q: What is the difference between CD74HC7266M, CD74HC7266M96, and CD74HC7266MT?

A: All three parts are functionally equivalent with identical electrical specifications. The primary differences are product status and packaging format. CD74HC7266M96 is active with Cut Tape and Digi-Reel packaging. CD74HC7266MT is obsolete with Tape & Reel packaging. CD74HC7266M is discontinued at DiGi Electronics. Selection should prioritize CD74HC7266M96 for new designs requiring long-term availability.

Q: Does the 30ns propagation delay of the substitute parts affect circuit performance?

A: The substitute parts specify 30ns maximum propagation delay at 6V with 50pF load, compared to 20ns for the original part. This 10ns difference is within acceptable tolerance for standard logic applications. Circuit timing analysis should confirm compatibility with specific system requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (CD74HC7266M, CD74HC7266M96, CD74HC7266MT) maintain ROHS3 compliance and MSL 1 rating, matching the environmental and regulatory status of the original 74HC7266D,652.

Q: What is the operating temperature range difference?

A: The original 74HC7266D,652 operates from -40°C to 125°C. All Texas Instruments substitutes extend the lower temperature limit to -55°C, providing enhanced performance margin in cold environment applications. The upper temperature limit remains 125°C across all parts.

Q: Which substitute part should be selected for new production designs?

A: CD74HC7266M96 is the recommended choice for new designs. This part maintains active product status, ensuring sustained availability and supply chain reliability. It is supplied in standard Cut Tape and Digi-Reel formats with current inventory of 2740 units.