74HCT670D,652 Equivalent & Substitute Parts

Part Overview

The 74HCT670D,652 is a 4×4 Register File logic integrated circuit manufactured by NXP USA Inc. in a 16-SOIC surface mount package. This component features a single supply voltage configuration with a 1×1:1 circuit topology and four independent circuits, designed for register storage and retrieval applications in digital systems.

The 74HCT670D,652 is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

74HCT670D,652

NXP USA Inc.In Stock: 92174HCT670D,652 Datasheet

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CD74HCT670M

Texas InstrumentsIn Stock: 743CD74HCT670M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HCT670D,652 is determined by the following critical parameters:

• Circuit topology: 1 × 1:1 configuration with 4 independent circuits
• Package compatibility: 16-SOIC form factor with 0.154" width (3.90mm)
• Voltage supply range: 4.5V ~ 5.5V single supply operation
• Mounting method: Surface mount technology
• Functional classification: Register File logic device
• Series compatibility: 74HCT logic family

The CD74HCT670M from Texas Instruments satisfies all substitution criteria. Both devices share identical circuit topology, package dimensions, voltage supply specifications, and functional purpose within the 74HCT logic series. The substitute part maintains full electrical and mechanical compatibility while offering active product status and extended temperature range capability.

Parameter Comparison

Engineering Selection Recommendations

The CD74HCT670M is a direct functional equivalent to the 74HCT670D,652. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The substitute part offers the advantage of active product status, ensuring continued availability and manufacturing support.

The CD74HCT670M provides an extended lower operating temperature limit of -55°C compared to the original part's -40°C minimum, expanding the usable temperature envelope for applications requiring enhanced cold-temperature performance. All other electrical and mechanical specifications remain identical, enabling direct substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the CD74HCT670M replace the 74HCT670D,652 in existing designs?

A: Yes. Both devices share identical voltage supply specifications (4.5V ~ 5.5V), circuit topology (1 × 1:1 with 4 independent circuits), and 16-SOIC package dimensions. Direct substitution is electrically and mechanically compatible.

Q: What is the primary advantage of using the CD74HCT670M?

A: The CD74HCT670M maintains active product status, ensuring reliable supply chain availability. It also provides an extended operating temperature range to -55°C, compared to the original part's -40°C minimum.

Q: Are there any package or pinout differences between these parts?

A: No. Both components use the 16-SOIC package with identical 0.154" width (3.90mm). Pinout and package footprint are fully compatible.

Q: Do both parts meet current compliance standards?

A: Yes. Both the 74HCT670D,652 and CD74HCT670M are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: What is the moisture sensitivity level for these components?

A: Both parts have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements.