CD74HC93MT Equivalent & Substitute Parts

Part Overview

The CD74HC93MT is a 4-bit binary counter IC manufactured by Texas Instruments, housed 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 range with a maximum count rate of 35 MHz. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production needs.

Substiute Parts

CD74HC93MT

Texas InstrumentsIn Stock: 1606CD74HC93MT Datasheet

Current PartRFQ

CD74HC93M96

Harris CorporationIn Stock: 2911CD74HC93M96 Datasheet

Parametric EquivalentRFQ

74HCT273D,653

NXP SemiconductorsIn Stock: 30030174HCT273D,653 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD74HC93MT is evaluated based on the following critical parameters that define functional equivalence:

Primary Equivalence Criteria:

• Logic function classification (Binary Counter)
• Number of bits per element (4-bit)
• Count direction (Up)
• Trigger mechanism (Negative Edge)
• Reset capability (Asynchronous)
• Count rate performance (35 MHz minimum)
• Supply voltage compatibility (2V to 6V range)
• Package form factor (14-SOIC)
• Operating temperature range (-55°C to 125°C)

Parametric Equivalent: CD74HC93M96 (Harris Corporation) matches all functional and electrical parameters of the CD74HC93MT, including identical logic type, bit configuration, trigger characteristics, and package specifications. This part maintains full pin and functional compatibility.

Note on MFR Recommended Part: The 74HCT273D,653 (NXP Semiconductors) is listed as a manufacturer-recommended alternative but represents a different logic function (D-Type Flip Flop, 8-bit) with different electrical characteristics (4.5V to 5.5V supply, positive edge trigger, 20-SOIC package). This part does not meet the parametric equivalence criteria for direct substitution in applications requiring 4-bit binary counter functionality.

Parameter Comparison

Engineering Selection Recommendations

For Direct Functional Substitution:

The CD74HC93M96 (Harris Corporation) is the parametric equivalent for the CD74HC93MT. Both parts share identical logic function, bit configuration, trigger characteristics, supply voltage range, temperature operating range, and 14-SOIC package form factor. However, the CD74HC93M96 carries an obsolete product status and is RoHS non-compliant, which may present constraints for new designs subject to environmental or regulatory requirements.

Regarding the MFR Recommended Part:

The 74HCT273D,653 is not a functional equivalent. This part is a D-Type Flip Flop with 8-bit configuration, positive edge triggering, and a narrower supply voltage range (4.5V to 5.5V). The 20-SOIC package differs from the 14-SOIC requirement. This part cannot replace the CD74HC93MT in applications requiring 4-bit binary counter functionality with negative edge triggering and wide supply voltage tolerance.

Compliance Considerations:

The CD74HC93MT is ROHS3 compliant. The CD74HC93M96 is RoHS non-compliant. For applications with RoHS compliance mandates, the CD74HC93M96 may not satisfy procurement or regulatory requirements despite functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC93M96 directly replace the CD74HC93MT?

A: The CD74HC93M96 is functionally and electrically equivalent to the CD74HC93MT. Both parts are 4-bit binary counters with negative edge triggering, asynchronous reset, identical supply voltage range (2V to 6V), and the same 14-SOIC package. Pin-for-pin compatibility is maintained. However, verify RoHS compliance requirements for your application, as the CD74HC93M96 is RoHS non-compliant.

Q: Why is the 74HCT273D,653 listed as a substitute if it is not functionally equivalent?

A: The 74HCT273D,653 is designated as a manufacturer-recommended alternative but does not meet parametric equivalence criteria. This part is a D-Type Flip Flop (8-bit), not a binary counter, and operates with positive edge triggering and a narrower supply voltage range. It is suitable only for applications requiring D-Type Flip Flop functionality, not for direct replacement of the CD74HC93MT.

Q: What are the critical parameters that determine substitution compatibility?

A: Substitution compatibility for the CD74HC93MT is determined by: logic function type (binary counter), bit width (4-bit), count direction (up), trigger mechanism (negative edge), reset type (asynchronous), count rate (35 MHz minimum), supply voltage range (2V to 6V), operating temperature range (-55°C to 125°C), and package form factor (14-SOIC). All parameters must align for direct substitution.

Q: Are there package considerations when substituting the CD74HC93MT?

A: Yes. The CD74HC93MT uses a 14-SOIC (0.154", 3.90mm width) surface mount package. Any substitute must use the identical package specification to ensure PCB layout compatibility and proper component placement. The 74HCT273D,653 uses a 20-SOIC package and is therefore not suitable for direct board-level substitution.

Q: What is the difference between the CD74HC93MT and CD74HC93M96 in terms of product status?

A: The CD74HC93MT is discontinued at DiGi Electronics, while the CD74HC93M96 is classified as obsolete. Both parts are no longer in active production. Availability may be limited through secondary market channels. For new designs, consider long-term sourcing strategy and inventory planning.