74HC40105D,652 Equivalent & Substitute Parts

Part Overview

The 74HC40105D,652 is an asynchronous FIFO (First-In-First-Out) memory IC with 64-bit capacity (16 x 4 organization) manufactured by Nexperia USA Inc. This logic component operates at 36MHz with a 34ns access time and is housed in a 16-SOIC surface mount package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and component sourcing.

Substiute Parts

74HC40105D,652

Nexperia USA Inc.In Stock: 92674HC40105D,652 Datasheet

Current PartRFQ

CD74HC40105M

Harris CorporationIn Stock: 14081CD74HC40105M Datasheet

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CD74HC40105M96

Texas InstrumentsIn Stock: 3212CD74HC40105M96 Datasheet

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CD74HC40105MT

Texas InstrumentsIn Stock: 1125CD74HC40105MT Datasheet

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CD74HCT40105M

Texas InstrumentsIn Stock: 781CD74HCT40105M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC40105D,652 is determined by the following core parameters:

• Memory organization: 64 bits (16 x 4)
• Function: Asynchronous FIFO operation
• Package: 16-SOIC form factor with 0.154" width (3.90mm)
• Mounting: Surface mount technology
• Voltage supply compatibility: Parts must operate within overlapping supply voltage ranges

All substitute parts listed maintain identical memory organization, asynchronous function, and package specifications. Voltage supply ranges and operating temperature ranges may vary between substitutes, which affects application suitability based on system requirements.

Parameter Comparison

Engineering Selection Recommendations

CD74HC40105M96 (Texas Instruments) is the primary substitute for new designs and ongoing production. This part is active in product status, ROHS3 compliant, and maintains full voltage supply compatibility (2 V ~ 6 V) with the original 74HC40105D,652. It is supplied in Tape & Reel packaging suitable for automated assembly.

CD74HCT40105M (Texas Instruments) serves as an alternative substitute with active product status and ROHS3 compliance. This part operates within a narrower voltage supply range (4.5 V ~ 5.5 V), limiting its use to 5V-centric systems. It is supplied in Tube packaging.

CD74HC40105MT (Texas Instruments) is available as a secondary option with ROHS3 compliance but is discontinued at DiGi Electronics, affecting long-term availability.

CD74HC40105M (Harris Corporation) is not recommended for new designs due to RoHS non-compliance and obsolete status, despite maintaining voltage supply compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT40105M replace 74HC40105D,652 in all applications?

A: CD74HCT40105M is functionally equivalent but operates within a narrower voltage supply range (4.5 V ~ 5.5 V) compared to the original part (2 V ~ 6 V). It is suitable only for systems designed for 5V operation.

Q: What is the difference between CD74HC40105M96 and CD74HC40105MT?

A: Both parts are manufactured by Texas Instruments with identical electrical specifications. CD74HC40105M96 is supplied in Tape & Reel packaging for automated assembly, while CD74HC40105MT is supplied in standard packaging. CD74HC40105M96 maintains active product status, whereas CD74HC40105MT is discontinued at DiGi Electronics.

Q: Is the 16-SOIC package identical across all substitute parts?

A: Yes. All substitute parts use the 16-SOIC package with 0.154" width (3.90mm), ensuring mechanical and electrical compatibility with the original 74HC40105D,652 footprint.

Q: Why is CD74HC40105M not recommended despite voltage compatibility?

A: CD74HC40105M is RoHS non-compliant and obsolete, creating regulatory and supply chain risks for new designs and production environments requiring RoHS certification.

Q: What is the operating temperature range difference?

A: The original 74HC40105D,652 operates from -40°C to 125°C. All substitute parts extend the lower temperature limit to -55°C, providing broader environmental operating capability.