DM74S32N Equivalent & Substitute Parts

Part Overview

The DM74S32N is a 4-channel 2-input OR Gate logic IC manufactured by onsemi in 14-MDIP packaging. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The DM74S32N operates within the 74S logic family standard, providing TTL-compatible switching functionality suitable for digital logic applications requiring OR gate operations.

Substiute Parts

DM74S32N

onsemiIn Stock: 1376DM74S32N Datasheet

Current PartRFQ

SN74S32N

Texas InstrumentsIn Stock: 4143SN74S32N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74S32N is determined by strict equivalence across the following critical parameters:

• Logic function: 4-channel 2-input OR gate operation
• Supply voltage range: 4.75V ~ 5.25V
• Input/output electrical characteristics: Logic levels and current ratings
• Propagation delay performance: Maximum 9ns @ 5V, 50pF load
• Package form factor: 14-DIP through-hole mounting
• Base product series: 74S logic family

The SN74S32N from Texas Instruments meets all these criteria and qualifies as a direct substitute. Both parts share identical functional specifications, electrical parameters, and physical packaging, enabling pin-for-pin replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The SN74S32N from Texas Instruments is the qualified substitute for the obsolete DM74S32N. Selection is based on the following factors:

• Product Status: The SN74S32N maintains active production status, ensuring availability for procurement and supply chain continuity.
• Compliance: Both parts carry REACH Unaffected status and EAR99 classification, maintaining regulatory alignment.
• Performance: The SN74S32N demonstrates superior propagation delay performance (5ns versus 9ns), providing additional timing margin in digital logic applications.
• Electrical Equivalence: All functional and electrical parameters are identical, enabling direct pin-for-pin replacement without circuit modification.
• Packaging: Both components utilize identical 14-DIP through-hole packaging, supporting direct mechanical substitution on existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the SN74S32N replace the DM74S32N in existing designs?

A: Yes. The SN74S32N is a direct pin-for-pin substitute. All electrical parameters, logic function, and package dimensions are identical, enabling replacement without circuit redesign.

Q: What is the primary difference between these two parts?

A: The DM74S32N is obsolete, while the SN74S32N is in active production. Additionally, the SN74S32N exhibits faster propagation delay (5ns versus 9ns), which provides improved timing performance.

Q: Are there any package compatibility concerns?

A: No. Both parts use 14-DIP (0.300", 7.62mm) through-hole packaging. PCB footprints and mounting requirements are identical.

Q: Do these parts have different compliance certifications?

A: Both parts carry REACH Unaffected status and EAR99 classification. The SN74S32N is RoHS3 Compliant, while the DM74S32N does not specify RoHS status.

Q: What supply voltage range do these parts support?

A: Both the DM74S32N and SN74S32N operate within 4.75V to 5.25V, standard for 74S logic family components.

Q: Can these parts be used in new designs?

A: The SN74S32N is recommended for new designs due to its active production status and availability. The DM74S32N, being obsolete, should be replaced with the SN74S32N in new implementations.