74HC93D,112 Binary Counter 4-Bit Logic IC Equivalent & Substitute Parts

Part Overview

The 74HC93D,112 is a 4-bit binary counter logic IC manufactured by NXP USA Inc. in a 14-SOIC surface mount package. This component functions as a negative edge-triggered counter with asynchronous reset capability, operating across a 2V to 6V supply voltage range with a maximum count rate of 108 MHz. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

74HC93D,112

NXP USA Inc.In Stock: 69174HC93D,112 Datasheet

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CD74HC93M

Harris CorporationIn Stock: 1801CD74HC93M Datasheet

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CD74HC93M96

Harris CorporationIn Stock: 2911CD74HC93M96 Datasheet

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CD74HC93MT

Texas InstrumentsIn Stock: 1606CD74HC93MT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC93D,112 is determined by the following critical parameters that must remain consistent:

• Logic Function: Binary counter with 4-bit capacity, 1 element configuration
• Trigger Mechanism: Negative edge-triggered operation
• Reset Type: Asynchronous reset capability
• Package Compatibility: 14-SOIC (0.154", 3.90mm Width) surface mount package
• Electrical Specifications: Supply voltage range 2V ~ 6V, operating temperature -40°C ~ 125°C minimum
• Base Product Series: 74HC93 logic family

The substitute parts CD74HC93M, CD74HC93MT, and CD74HC93M96 maintain functional equivalence across these core parameters. Variations in count rate (35 MHz vs. 108 MHz), operating temperature range extensions, RoHS compliance status, and packaging formats (Tube, Tape & Reel, Bulk) represent acceptable trade-offs for component availability while preserving circuit functionality.

Parameter Comparison

Engineering Selection Recommendations

CD74HC93MT (Texas Instruments) is the primary substitute recommendation. This part maintains ROHS3 compliance matching the original 74HC93D,112, ensuring regulatory alignment for new designs and procurement. The extended operating temperature range (-55°C ~ 125°C) provides additional margin for demanding environments. Tape & Reel packaging supports automated assembly processes.

CD74HC93M (Harris Corporation) and CD74HC93M96 (Harris Corporation) are functionally equivalent alternatives where RoHS compliance is not a design constraint. Both parts operate within the required electrical and thermal specifications. CD74HC93M is supplied in Tube packaging, while CD74HC93M96 is available in Bulk format, accommodating different procurement and assembly workflows.

All three substitute parts operate at 35 MHz maximum count rate, which is lower than the original 108 MHz specification. This reduction is acceptable for applications where the counter frequency requirement does not exceed 35 MHz. For circuits requiring the full 108 MHz performance envelope, alternative logic families or higher-speed counter variants must be evaluated.

Frequently Asked Questions (FAQ)

Q: Can CD74HC93M, CD74HC93MT, and CD74HC93M96 be used interchangeably with 74HC93D,112?

A: Yes, within frequency constraints. All three substitute parts maintain identical logic function, pin configuration, package dimensions, and electrical operating ranges (2V ~ 6V supply, -40°C ~ 125°C minimum operating temperature). The primary difference is maximum count rate: substitutes operate at 35 MHz versus the original 108 MHz. Interchangeability is confirmed for applications operating below 35 MHz.

Q: What is the impact of the reduced count rate on circuit performance?

A: The 35 MHz maximum count rate of substitute parts is sufficient for most digital logic applications. If your circuit requires counting or timing operations above 35 MHz, the substitutes are not suitable. Review your circuit's clock frequency and counter input signal rates to confirm compatibility.

Q: Does RoHS compliance matter for my application?

A: RoHS compliance is mandatory for products sold in the European Union and increasingly required by major OEMs globally. CD74HC93MT (ROHS3 compliant) is recommended for new designs and regulated markets. CD74HC93M and CD74HC93M96 (RoHS non-compliant) are acceptable only for legacy systems or non-regulated applications.

Q: Are the package dimensions identical across all parts?

A: Yes. All parts use the 14-SOIC (0.154", 3.90mm Width) surface mount package. PCB footprints, solder pad layouts, and component placement are identical. No board redesign is required when substituting between these parts.

Q: What packaging options are available?

A: CD74HC93M is supplied in Tube packaging for manual assembly or small-volume production. CD74HC93MT is supplied in Tape & Reel format, optimized for automated pick-and-place assembly. CD74HC93M96 is supplied in Bulk format for high-volume procurement. Select based on your assembly process and volume requirements.

Q: Can I use these parts in new product designs?

A: All substitute parts are classified as obsolete or discontinued. For new product development, consider evaluating current-generation binary counter ICs from active product lines. However, these substitutes remain suitable for legacy system maintenance, field replacements, and low-volume production runs where design continuity is prioritized.