SN74LS670NG4 Equivalent & Substitute Parts

Part Overview

The SN74LS670NG4 is a Register File logic integrated circuit manufactured by Texas Instruments, designed for 1 x 1:1 register file applications with 4 independent circuits. This component is packaged in a 16-DIP (0.300", 7.62mm) through-hole configuration and operates under single supply voltage conditions.

The SN74LS670NG4 has been discontinued at DiGi Electronics. Locating equivalent substitute parts is necessary for ongoing system maintenance, repair, and production continuity where this component is specified in legacy designs or where existing inventory is depleted.

Substiute Parts

SN74LS670NG4

Texas InstrumentsIn Stock: 811SN74LS670NG4 Datasheet

Current PartRFQ

SN74LS670N

onsemiIn Stock: 6218SN74LS670N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS670NG4 is determined by strict equivalence across the following critical parameters:

• Circuit configuration (1 x 1:1 register file topology)
• Independent circuit count (4 circuits)
• Output current specifications (2.6mA high, 8mA low)
• Supply voltage range (4.75V ~ 5.25V)
• Operating temperature range (0°C ~ 70°C)
• Package type and pin configuration (16-DIP / 16-PDIP)
• Base product number (74LS670)
• Series classification (74LS logic family)

The SN74LS670N from onsemi meets all electrical and mechanical substitution criteria for the SN74LS670NG4. Both parts share identical functional specifications, pin configurations, and performance characteristics within the defined operating parameters.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS670N (onsemi) is a direct functional equivalent to the SN74LS670NG4 (Texas Instruments) based on identical electrical specifications and package configuration. Both components are no longer in active production; the SN74LS670NG4 is discontinued and the SN74LS670N is classified as obsolete.

Selection between these parts should be based on current inventory availability and compliance requirements. The SN74LS670NG4 carries RoHS3 compliance status, while the SN74LS670N is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the SN74LS670NG4 remains the preferred choice if inventory is available. For applications without RoHS mandates, the SN74LS670N provides functional equivalence with potentially greater availability through secondary market channels.

Both parts are classified under ECCN EAR99 and HTSUS 8542.39.0001 for export control and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS670N be used as a direct replacement for the SN74LS670NG4?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical circuit configuration, output current specifications, supply voltage range, operating temperature range, and 16-DIP package pinout. Direct substitution is possible from a functional standpoint.

Q: What is the difference between the SN74LS670NG4 and SN74LS670N?

A: The primary differences are manufacturer (Texas Instruments vs. onsemi) and compliance status. The SN74LS670NG4 is RoHS3 compliant; the SN74LS670N is RoHS non-compliant. Both are discontinued/obsolete products with identical electrical and mechanical specifications.

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

A: No. Both parts use the 16-DIP (0.300", 7.62mm) package with 16-PDIP supplier device package designation. Pin configuration and physical dimensions are identical, enabling direct board-level substitution.

Q: What should I consider when selecting between these substitute parts?

A: Consider regulatory compliance requirements (RoHS status), current inventory availability, and cost. If RoHS compliance is mandatory, the SN74LS670NG4 is required. If RoHS compliance is not required, either part is functionally suitable based on availability.

Q: Are these parts still in production?

A: No. The SN74LS670NG4 is discontinued at DiGi Electronics, and the SN74LS670N is classified as obsolete. Both parts are available only through existing inventory channels and secondary market sources.