DM74S283N Equivalent & Substitute Parts

Part Overview

The DM74S283N is a 4-bit binary full adder with fast carry logic manufactured by onsemi. This IC performs parallel binary addition with carry propagation across 4 bits and is housed in a 16-DIP package for through-hole mounting applications. The device operates within a 4.75V to 5.25V supply voltage range and is rated for 0°C to 70°C operating temperatures.

The DM74S283N is classified as obsolete. Locating equivalent substitute parts is necessary to support legacy system maintenance, repair, and continued production of equipment utilizing this component. Active alternatives from current manufacturers ensure supply chain continuity and long-term availability.

Substiute Parts

DM74S283N

onsemiIn Stock: 1970DM74S283N Datasheet

Current PartRFQ

SN74S283N

Texas InstrumentsIn Stock: 2098SN74S283N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DM74S283N is determined by strict equivalence across the following parameters:

• Logic Function: Binary full adder with fast carry (4-bit)
• Electrical Specifications: Supply voltage 4.75V ~ 5.25V; operating temperature 0°C ~ 70°C
• Package Compatibility: 16-DIP (0.300", 7.62mm) through-hole mounting
• Series Classification: 74S logic family

The SN74S283N from Texas Instruments meets all substitution criteria. Both devices share identical logic functionality, electrical ratings, package geometry, and series designation. This ensures direct functional and physical compatibility in applications originally designed for the DM74S283N.

Parameter Comparison

Engineering Selection Recommendations

The SN74S283N is the direct equivalent for the DM74S283N. Selection is based on the following factors:

Product Status: The SN74S283N maintains active production status, ensuring ongoing availability and supply chain reliability. The DM74S283N is obsolete and subject to inventory depletion.

Regulatory Compliance: Both devices carry identical REACH and ECCN classifications (REACH Unaffected, EAR99), confirming equivalent regulatory standing. The SN74S283N is RoHS3 compliant, meeting modern environmental standards.

Functional Equivalence: Identical logic type, bit width, electrical specifications, and package geometry guarantee pin-for-pin and functional compatibility without circuit modification.

Availability: The SN74S283N is available in active inventory with established supply channels, whereas the DM74S283N availability is limited to existing stock.

Frequently Asked Questions (FAQ)

Q: Can the SN74S283N replace the DM74S283N in existing designs?

A: Yes. The SN74S283N is a direct functional and physical equivalent. Both devices are 4-bit binary full adders in 16-DIP packages with identical electrical specifications. No circuit modifications are required.

Q: Are there differences in pin configuration between these parts?

A: No. Both the DM74S283N and SN74S283N use the 16-DIP package with identical pin assignments and signal definitions. Direct socket substitution is possible.

Q: What is the significance of the obsolete status for the DM74S283N?

A: Obsolete status indicates that onsemi has discontinued production. Existing inventory is finite and subject to depletion. The SN74S283N from Texas Instruments provides continuity for new production and future repairs.

Q: Are the electrical characteristics identical?

A: Yes. Both devices operate at 4.75V to 5.25V supply voltage and are rated for 0°C to 70°C operating temperature. Logic function, propagation delay characteristics, and output drive capabilities are equivalent within the 74S series specification.

Q: Does the SN74S283N meet current environmental standards?

A: Yes. The SN74S283N is RoHS3 compliant and carries REACH Unaffected status, meeting current regulatory requirements for electronic components.