74HC93D,118 Binary Counter 4-Bit Logic IC Equivalent & Substitute Parts

Part Overview

The 74HC93D,118 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,118

NXP USA Inc.In Stock: 100974HC93D,118 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,118 is determined by the following critical parameters that must remain consistent across equivalent parts:

• Logic Type: Binary Counter (4-bit, 1 element)
• Trigger Type: Negative Edge
• Reset Type: Asynchronous
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Voltage - Supply: 2V ~ 6V compatibility
• Pin configuration and functional equivalence within the 74HC series

The substitute parts listed below maintain these core electrical and mechanical specifications, ensuring direct functional replacement in existing circuit designs. Variations in count rate, operating temperature range, and RoHS compliance status are noted but do not prevent substitution when the application requirements permit.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (CD74HC93M, CD74HC93M96, and CD74HC93MT) provide functional equivalence to the 74HC93D,118 for applications where the specified count rate of 35 MHz is sufficient. Selection should be based on the following criteria:

CD74HC93MT (Texas Instruments) is the preferred substitute when RoHS3 compliance is required for new designs or procurement specifications. This part maintains ROHS3 compliance status matching the original 74HC93D,118 and is available in Tape & Reel packaging for automated assembly processes.

CD74HC93M (Harris Corporation) and CD74HC93M96 (Harris Corporation) are functionally equivalent alternatives when RoHS compliance is not a design constraint. CD74HC93M is supplied in Tube packaging, while CD74HC93M96 is supplied in Bulk packaging. Both parts support the extended operating temperature range of -55°C to 125°C, providing additional thermal margin compared to the original part.

Applications requiring the full 108 MHz count rate of the original 74HC93D,118 cannot use these substitute parts, as all alternatives are rated at 35 MHz maximum count rate.

Frequently Asked Questions (FAQ)

Q: Can CD74HC93M, CD74HC93M96, and CD74HC93MT be used interchangeably with 74HC93D,118?

A: Yes, these parts are functionally equivalent for applications where the 35 MHz count rate specification is acceptable. All maintain identical logic type, bit configuration, trigger type, reset type, package, and supply voltage specifications. Pin-for-pin compatibility is maintained across all four parts.

Q: What is the primary difference between the substitute parts?

A: The main differences are manufacturer (Harris Corporation vs. Texas Instruments), packaging format (Tube, Bulk, or Tape & Reel), RoHS compliance status, and count rate specification (35 MHz vs. 108 MHz for the original). All parts share the same 14-SOIC package dimensions and electrical operating parameters.

Q: Which substitute should I select for new designs?

A: CD74HC93MT from Texas Instruments is recommended for new designs due to ROHS3 compliance certification and Tape & Reel packaging compatibility with modern automated assembly equipment.

Q: Are there any temperature range considerations when substituting?

A: The substitute parts support an extended operating temperature range of -55°C to 125°C compared to the original part's -40°C to 125°C range. This provides additional thermal margin and is not a limiting factor for substitution.

Q: What applications are affected by the reduced count rate of substitute parts?

A: Applications requiring counter operation above 35 MHz cannot use these substitute parts. The original 74HC93D,118 supports up to 108 MHz. For high-frequency applications, alternative counter ICs with higher count rate specifications must be evaluated.

Q: Is the 14-SOIC package identical across all parts?

A: Yes, all parts use the 14-SOIC package with 0.154" width and 3.90mm body width. PCB footprints and assembly processes remain unchanged when substituting between these parts.