DM74LS670N Equivalent & Substitute Parts

Part Overview

The DM74LS670N is a 16-pin DIP register file IC manufactured by onsemi, classified as a Logic component with a 1 x 1:1 circuit configuration. This device is designated as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement. The register file architecture with four independent circuits and specified output current characteristics defines the functional scope for substitute part selection.

Substiute Parts

DM74LS670N

onsemiIn Stock: 2222DM74LS670N Datasheet

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SN74LS670N

onsemiIn Stock: 6218SN74LS670N Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute part identification for the DM74LS670N is based on strict electrical and mechanical parameter matching within the 74LS logic family. The following parameters establish substitution validity:

• Circuit Type & Configuration: Register File with 1 x 1:1 circuit and 4 independent circuits
• Electrical Characteristics: Output current specifications (2.6mA high, 8mA low), single supply voltage range (4.75V ~ 5.25V), and operating temperature range (0°C ~ 70°C)
• Physical Package: 16-DIP through-hole mounting with 0.300" (7.62mm) pitch
• Series Classification: 74LS logic family designation

The SN74LS670N meets all specified electrical and mechanical parameters, establishing it as a direct functional equivalent within the constraint parameters provided.

Parameter Comparison

Engineering Selection Recommendations

Both the DM74LS670N and SN74LS670N are classified as obsolete products. Selection between these parts should be based on availability and compliance requirements specific to your application. The SN74LS670N currently maintains higher inventory levels (6200 Pcs vs. 2125 Pcs), which may influence procurement decisions for volume requirements or long-term supply chain planning.

Compliance considerations include REACH status (DM74LS670N: REACH Unaffected; SN74LS670N: RoHS non-compliant). Applications subject to RoHS or REACH regulations should verify compatibility with the selected part's compliance profile.

Both parts share identical electrical specifications and 16-PDIP packaging, ensuring direct functional interchangeability in circuit applications designed for the 74LS670 base product number.

Frequently Asked Questions (FAQ)

Q: Can SN74LS670N replace DM74LS670N in existing designs? A: Yes. Both parts are functionally equivalent based on matching circuit configuration, output current specifications, supply voltage range, operating temperature range, and 16-DIP package format. Direct substitution is supported at the electrical and mechanical level.

Q: Are there differences in compliance or regulatory status between these parts? A: The DM74LS670N is REACH Unaffected, while the SN74LS670N is RoHS non-compliant. Applications with specific regulatory requirements should verify compliance compatibility before selection.

Q: What is the significance of the obsolete product status? A: Both parts are obsolete, indicating discontinued manufacturing. Procurement should prioritize available inventory. The SN74LS670N has higher current stock availability (6200 Pcs) compared to the DM74LS670N (2125 Pcs).

Q: Are the pin configurations and package dimensions identical? A: Yes. Both parts use 16-PDIP packaging with 0.300" (7.62mm) pitch, ensuring identical PCB footprint and pin-to-pin compatibility.

Q: What are the critical electrical parameters for substitution? A: Output current (2.6mA high, 8mA low), supply voltage range (4.75V ~ 5.25V), and operating temperature range (0°C ~ 70°C) must match. Both parts meet these specifications identically.