DM7400N NAND Gate IC Equivalent & Substitute Parts

Part Overview

The DM7400N is a 4-channel 2-input NAND gate logic IC manufactured by onsemi in a 14-MDIP package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The DM7400N operates within the standard 5V logic family (4.75V to 5.25V supply range) and is suitable for through-hole mounting applications requiring basic digital logic gating functions.

Substiute Parts

DM7400N

onsemiIn Stock: 1282DM7400N Datasheet

Current PartRFQ

SN7400N

Texas InstrumentsIn Stock: 5686SN7400N Datasheet

Parametric EquivalentRFQ

SN7400NE4

Texas InstrumentsIn Stock: 1036SN7400NE4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM7400N are determined by strict equivalence across the following critical parameters:

• Logic Type: NAND Gate (4 channels, 2 inputs per channel)
• Voltage Supply Range: 4.75V ~ 5.25V
• Output Current Specifications: 400µA (high), 16mA (low)
• Input Logic Levels: 0.8V (low), 2V (high)
• Propagation Delay: 22ns @ 5V, 15pF load
• Operating Temperature Range: 0°C ~ 70°C
• Package Type: 14-DIP through-hole configuration

The identified substitutes (SN7400N and SN7400NE4, both from Texas Instruments) maintain identical electrical characteristics and mechanical compatibility with the DM7400N, enabling direct replacement in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both SN7400N and SN7400NE4 from Texas Instruments provide direct functional and mechanical substitution for the obsolete DM7400N. The primary distinction between the two Texas Instruments options is packaging format: SN7400N is supplied in tube packaging, while SN7400NE4 is also tube-packaged with identical electrical specifications.

For new designs and production applications, either Texas Instruments substitute is preferred due to active product status and ROHS3 compliance. The DM7400N, being obsolete and RoHS non-compliant, should be replaced in legacy designs where component refresh is feasible.

Frequently Asked Questions (FAQ)

Q: Can SN7400N and SN7400NE4 be used interchangeably with DM7400N?

A: Yes. Both Texas Instruments parts maintain identical electrical parameters (supply voltage, output current, input logic levels, propagation delay, and operating temperature range) and are packaged in the same 14-DIP through-hole configuration, enabling direct pin-compatible substitution.

Q: What is the difference between SN7400N and SN7400NE4?

A: Both parts are electrically identical NAND gate ICs with the same functional specifications. The primary difference is in quiescent current specification documentation; SN7400NE4 explicitly lists a maximum quiescent current of 22mA. Both are supplied in tube packaging and are ROHS3 compliant.

Q: Why is the DM7400N classified as obsolete?

A: The DM7400N is no longer in active production by onsemi. Obsolete status indicates limited or no availability from primary sources, making substitution with active-status equivalents necessary for ongoing production and new designs.

Q: Are there any compliance differences between the substitute parts and the original DM7400N?

A: Yes. The DM7400N is RoHS non-compliant, while both SN7400N and SN7400NE4 are ROHS3 compliant. For applications requiring RoHS compliance, the Texas Instruments substitutes are the appropriate choice.

Q: Is the 14-DIP package identical across all three parts?

A: Yes. All three parts use the 14-DIP (0.300", 7.62mm) through-hole package, ensuring mechanical compatibility and direct board-level substitution without layout modifications.