74HC40103D,652 Equivalent & Substitute Parts

Part Overview

The 74HC40103D,652 is an 8-bit binary counter IC manufactured by Nexperia USA Inc. in a 16-SOIC surface mount package. This logic component functions as a synchronous down counter with asynchronous reset, operating at a maximum count rate of 32 MHz across a supply voltage range of 2 V to 6 V. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

74HC40103D,652

Nexperia USA Inc.In Stock: 86174HC40103D,652 Datasheet

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CD74HC40103QM96EP

Texas InstrumentsIn Stock: 822CD74HC40103QM96EP Datasheet

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CD74HC40103M

Texas InstrumentsIn Stock: 1962CD74HC40103M Datasheet

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CD74HC40103M96

Texas InstrumentsIn Stock: 1637CD74HC40103M96 Datasheet

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CD74HC40103MT

Texas InstrumentsIn Stock: 1128CD74HC40103MT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74HC40103D,652 is determined by the following critical parameters that must remain constant across all equivalent parts:

• Logic Type: Binary Counter
• Number of Bits: 8 Bit
• Direction: Down
• Reset Type: Asynchronous
• Timing: Synchronous
• Trigger Type: Positive Edge
• Voltage Supply Range: 2 V ~ 6 V
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

The substitute parts listed below maintain these core electrical and mechanical specifications. Variations in count rate, operating temperature range, product status, and packaging format (tube, tape & reel, cut tape) are permitted within the substitution framework, as these do not affect functional compatibility in the counter application.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain full functional and electrical compatibility with the 74HC40103D,652 within the specified parameter constraints. Selection among the Texas Instruments alternatives should be based on the following factors:

CD74HC40103QM96EP: Active product status with tape & reel packaging. Suitable for high-volume production environments requiring standard packaging formats.

CD74HC40103M: Last Time Buy status with tube packaging. Extended operating temperature range (-55°C ~ 125°C) provides broader environmental coverage compared to the original part. Appropriate for applications requiring lower temperature operation.

CD74HC40103M96: Active product status with cut tape and Digi-Reel® packaging options. Extended operating temperature range (-55°C ~ 125°C). Recommended for applications requiring long-term availability and flexible packaging.

CD74HC40103MT: Last Time Buy status with tape & reel packaging. Extended operating temperature range (-55°C ~ 125°C). Suitable for applications requiring tape & reel format with enhanced temperature performance.

All substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can the 74HC40103D,652 be directly replaced with CD74HC40103QM96EP?

A: Yes. Both parts maintain identical logic type, bit count, counter direction, reset type, timing characteristics, trigger type, supply voltage range, and 16-SOIC package specifications. The substitute is functionally compatible for direct replacement in existing designs.

Q: What is the significance of the count rate difference between the original part (32 MHz) and the Texas Instruments substitutes (18 MHz)?

A: The count rate specification defines the maximum frequency at which the counter can operate. Applications designed for the 74HC40103D,652 operating at or below 18 MHz will function identically with the substitute parts. Applications requiring operation above 18 MHz cannot use these substitutes.

Q: Are the extended operating temperature ranges of the Texas Instruments parts (-55°C ~ 125°C) backward compatible with the original specification (-40°C ~ 125°C)?

A: Yes. The extended range encompasses the original specification. Parts rated for -55°C ~ 125°C will operate within the -40°C ~ 125°C range of the original part without performance degradation.

Q: What packaging format should be selected for new production designs?

A: CD74HC40103M96 (cut tape & Digi-Reel®) or CD74HC40103QM96EP (tape & reel) are recommended for new designs due to active product status. CD74HC40103M (tube) and CD74HC40103MT (tape & reel) are Last Time Buy parts and should be avoided for new long-term production commitments.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance equivalent to the original 74HC40103D,652.

Q: Can these parts be used interchangeably in the same PCB assembly?

A: Yes, provided the application does not require operation above 18 MHz. All parts share identical 16-SOIC package dimensions (0.154", 3.90mm width) and surface mount specifications, enabling direct PCB footprint compatibility.