DM7404N Equivalent & Substitute Parts

Part Overview

The DM7404N is a 6-channel inverter logic IC manufactured by onsemi in a 14-MDIP package. This component performs basic logic inversion operations and is part of the 7400 series logic family. The DM7404N is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Identifying compatible alternatives ensures design continuity and supply chain reliability.

Substiute Parts

DM7404N

onsemiIn Stock: 1202DM7404N Datasheet

Current PartRFQ

SN7404N

Texas InstrumentsIn Stock: 4111SN7404N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM7404N is determined by strict equivalence across the following critical parameters:

• Logic Function: Both parts must be 6-channel inverters with single input configuration
• Electrical Specifications: Supply voltage range (4.75V ~ 5.25V), output current ratings (400µA high, 16mA low), input logic levels (0.8V low, 2V high), and propagation delay (22ns @ 5V, 15pF) must be identical
• Package Compatibility: 14-DIP through-hole mounting with 0.300" (7.62mm) pitch ensures mechanical and electrical interchangeability
• Series Compatibility: Both parts belong to the 7400 logic family

The SN7404N from Texas Instruments meets all these criteria and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SN7404N (Texas Instruments)

The SN7404N is the recommended substitute for the obsolete DM7404N. Selection rationale is based on the following factors:

• Product Status: The SN7404N maintains active product status, ensuring ongoing availability and supply chain stability
• Compliance: The SN7404N is ROHS3 compliant, meeting current regulatory requirements for new designs and manufacturing
• Electrical Equivalence: All electrical parameters, including supply voltage, output current, input logic levels, and propagation delay, are identical to the DM7404N
• Package Compatibility: Both parts use identical 14-DIP through-hole packaging, enabling direct board-level substitution without layout modifications
• Inventory Availability: The SN7404N is available in higher quantities (4100 pcs) compared to the obsolete DM7404N (1135 pcs)

Frequently Asked Questions (FAQ)

Q: Can the SN7404N be used as a direct replacement for the DM7404N on existing PCBs?

A: Yes. The SN7404N is electrically and mechanically equivalent to the DM7404N. Both parts use the 14-DIP package with identical pin configuration, supply voltage, output current ratings, and propagation delay specifications. Direct substitution is possible without circuit modifications.

Q: What are the key differences between the DM7404N and SN7404N?

A: The primary differences are manufacturer (onsemi vs. Texas Instruments), product status (obsolete vs. active), and compliance certification (RoHS non-compliant vs. ROHS3 compliant). All electrical and mechanical specifications are identical.

Q: Why is the DM7404N classified as obsolete?

A: The DM7404N is no longer in active production by onsemi. The SN7404N from Texas Instruments provides equivalent functionality and is actively manufactured, making it the appropriate choice for new designs and production continuity.

Q: Are there any thermal or reliability differences between these parts?

A: Both parts operate across the same temperature range (0°C ~ 70°C) and share identical electrical characteristics. Differences in reliability or thermal performance are not indicated by the provided specifications.

Q: Can the SN7404N be used in applications requiring RoHS compliance?

A: Yes. The SN7404N is ROHS3 compliant, meeting current environmental and regulatory standards. The obsolete DM7404N is RoHS non-compliant and should not be used in new designs subject to RoHS requirements.

Q: What is the pin configuration for both parts?

A: Both the DM7404N and SN7404N use the standard 14-pin DIP package with 0.300" (7.62mm) pitch. Pin assignments are identical across both parts, ensuring direct compatibility.