74HC7266D,653 XNOR Logic IC Equivalent & Substitute Parts

Part Overview

The 74HC7266D,653 is a 4-channel, 2-input XNOR (Exclusive NOR) logic integrated circuit manufactured by NXP Semiconductors in 14-SO surface mount packaging. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74HC7266 series provides standard logic gate functionality suitable for digital circuit applications requiring XNOR logic operations across multiple channels.

Substiute Parts

74HC7266D,653

NXP SemiconductorsIn Stock: 83574HC7266D,653 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 eligibility for the 74HC7266D,653 is determined by the following critical parameters:

• Logic Type: XNOR (Exclusive NOR) with 4 channels and 2 inputs per channel
• Voltage Supply Range: 2V ~ 6V
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• RoHS Compliance: ROHS3 Compliant

All substitute parts listed maintain identical logic functionality, pin configuration, and package dimensions. Variations in propagation delay and operating temperature range do not affect functional substitution within the specified supply voltage and logic operation parameters.

Parameter Comparison

Engineering Selection Recommendations

CD74HC7266M96 (Texas Instruments) is the primary recommended substitute. This part maintains active product status, ensuring long-term availability and supply chain stability. It is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both prototype and production-volume procurement. All electrical parameters align with the original 74HC7266D,653, with extended operating temperature range (-55°C ~ 125°C) providing additional margin for demanding applications.

CD74HC7266MT (Texas Instruments) serves as an alternative substitute with identical electrical specifications and 14-SOIC packaging. This part is classified as obsolete but remains in inventory. It is supplied in Tape & Reel (TR) format, suitable for automated assembly processes.

CD74HC7266M (Texas Instruments) is available as a secondary option. This part is discontinued at DiGi Electronics but maintains equivalent electrical performance. Selection of this variant should be evaluated based on current inventory availability and procurement lead times.

All three Texas Instruments substitutes are ROHS3 compliant, REACH unaffected, and maintain identical logic functionality, pin configuration, and package dimensions as the original NXP part.

Frequently Asked Questions (FAQ)

Q: Can CD74HC7266M96 be used as a direct replacement for 74HC7266D,653?

A: Yes. Both parts are 4-channel, 2-input XNOR logic ICs in 14-SOIC packaging with identical supply voltage range (2V ~ 6V), logic levels, output current ratings, and quiescent current specifications. Pin configuration and functional behavior are equivalent.

Q: What is the difference between CD74HC7266M96 and CD74HC7266MT?

A: Both parts have identical electrical specifications and 14-SOIC packaging. The primary difference is packaging format: CD74HC7266M96 is supplied in Cut Tape (CT) and Digi-Reel® format, while CD74HC7266MT is supplied in Tape & Reel (TR) format. CD74HC7266M96 maintains active product status, whereas CD74HC7266MT is obsolete.

Q: Does the 10ns difference in propagation delay (20ns vs. 30ns) affect substitution?

A: The propagation delay difference does not prevent functional substitution. The 74HC7266D,653 specifies 20ns maximum delay at 6V with 50pF load, while Texas Instruments substitutes specify 30ns. Both values are within acceptable timing margins for standard logic applications. Applications with critical timing requirements should verify compatibility with system specifications.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 74HC7266D,653 and all listed substitutes (CD74HC7266M, CD74HC7266M96, CD74HC7266MT) are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference between the operating temperature ranges?

A: The 74HC7266D,653 operates from -40°C ~ 125°C, while all Texas Instruments substitutes operate from -55°C ~ 125°C. The extended lower temperature range of the substitutes provides additional operational margin and does not restrict substitution in applications using the original temperature range.

Q: Can these parts be used interchangeably in automated assembly?

A: Yes, provided the selected packaging format matches assembly equipment requirements. CD74HC7266M96 in Cut Tape (CT) and Digi-Reel® format is optimized for automated pick-and-place assembly. CD74HC7266MT in Tape & Reel (TR) format is also suitable for automated processes. Verify packaging format compatibility with your assembly line specifications.