74HC670D,653 Equivalent & Substitute Parts

Part Overview

The 74HC670D,653 is a 4x4 Register File logic IC manufactured by NXP USA Inc., housed in a 16-SOIC surface mount package. This component functions as a high-speed register storage element with 3-state output capability, supporting single supply operation across 2V to 6V. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

74HC670D,653

NXP USA Inc.In Stock: 119574HC670D,653 Datasheet

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CD74HC670M

Texas InstrumentsIn Stock: 1092CD74HC670M Datasheet

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CD74HC670M96

Texas InstrumentsIn Stock: 715CD74HC670M96 Datasheet

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CD74HC670MT

Texas InstrumentsIn Stock: 715CD74HC670MT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC670D,653 is determined by strict alignment with the following electrical and mechanical parameters:

• Circuit Type & Configuration: Register File with 1 x 1:1 circuit and 4 independent circuits
• Package Compatibility: 16-SOIC (0.154", 3.90mm Width) surface mount package
• Voltage Supply Range: 2V ~ 6V single supply operation
• Electrical Characteristics: 3-state output capability, high-speed logic performance
• Compliance Standards: ROHS3 compliance, MSL 1 rating
• Base Product Series: 74HC670 family designation

All substitute parts listed maintain these core parameters, ensuring functional and physical interchangeability within the specified operating conditions.

Parameter Comparison

Engineering Selection Recommendations

CD74HC670M96 is the primary substitute for new designs and procurement. This part maintains active product status with Texas Instruments, ensuring long-term availability and supply chain stability. The extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin compared to the original NXP part. All electrical and mechanical parameters align with the 74HC670D,653 specification.

CD74HC670M serves as an alternative substitute with Last Time Buy status from Texas Instruments. This part is suitable for legacy system support and maintenance applications where supply from existing inventory is available. Electrical and mechanical compatibility with the original part is maintained.

CD74HC670MT is available as a substitute option, though it carries a Discontinued at DiGi Electronics status. This part should be considered only when CD74HC670M96 or CD74HC670M are unavailable, and only for applications where existing inventory can be secured through alternative distribution channels.

All substitute parts comply with ROHS3 requirements and maintain MSL 1 moisture sensitivity ratings, ensuring compatibility with standard PCB assembly and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can CD74HC670M96 be used as a direct replacement for 74HC670D,653?

A: Yes. Both parts share identical circuit configuration (1 x 1:1 with 4 independent circuits), package type (16-SOIC), voltage supply range (2V ~ 6V), and compliance certifications (ROHS3, MSL 1). The CD74HC670M96 provides an extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 125°C), which is a functional advantage.

Q: What is the difference between CD74HC670M and CD74HC670M96?

A: Both parts are electrically and mechanically identical. The primary difference is packaging format: CD74HC670M is supplied in Tube packaging, while CD74HC670M96 is supplied in Tape & Reel (TR) format. CD74HC670M96 carries Active product status, while CD74HC670M is Last Time Buy. For new designs, CD74HC670M96 is preferred.

Q: Are there any thermal or electrical performance differences between the NXP and Texas Instruments versions?

A: The substitute parts from Texas Instruments support an extended lower temperature limit (-55°C versus -40°C). All other electrical parameters, including voltage supply range, output characteristics, and logic performance, are equivalent. No performance degradation occurs with substitution.

Q: What packaging considerations apply when switching from 74HC670D,653 to substitute parts?

A: All substitute parts use the same 16-SOIC (0.154", 3.90mm Width) surface mount package. PCB footprints, reflow profiles, and assembly processes remain unchanged. No design modifications are required.

Q: Is the CD74HC670MT suitable for new production?

A: CD74HC670MT is not recommended for new production due to its Discontinued at DiGi Electronics status. CD74HC670M96 (Active status) is the appropriate choice for ongoing manufacturing and design work.