DM74AS804BN NAND Gate IC Equivalent & Substitute Parts

Part Overview

The DM74AS804BN is a 6-channel, 2-input NAND gate logic IC manufactured by onsemi in a 20-PDIP package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The SN74AS804BN from Texas Instruments provides a direct functional and electrical equivalent for applications requiring this logic gate configuration.

Substiute Parts

DM74AS804BN

onsemiIn Stock: 1018DM74AS804BN Datasheet

Current PartRFQ

SN74AS804BN

Texas InstrumentsIn Stock: 3402SN74AS804BN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The SN74AS804BN qualifies as a parametric equivalent to the DM74AS804BN based on the following criteria:

• Identical logic configuration: 6-channel NAND gate with 2 inputs per channel
• Matching electrical specifications: supply voltage range (4.5V ~ 5.5V), output current (48mA), input logic levels (0.8V low, 2V high), and propagation delay (4ns @ 5V, 50pF)
• Identical package and pinout: 20-DIP (0.300", 7.62mm) through-hole mounting
• Same series designation: 74AS logic family
• Equivalent functional performance across all specified operating parameters

Parameter Comparison

Engineering Selection Recommendations

The SN74AS804BN is the recommended substitute for the obsolete DM74AS804BN. Selection rationale is based on:

• Active product status: The SN74AS804BN maintains current manufacturing and supply availability through Texas Instruments, ensuring long-term procurement viability
• Regulatory compliance: Both parts maintain REACH Unaffected status; the SN74AS804BN additionally carries ROHS3 Compliant certification
• Electrical equivalence: All specified electrical parameters, timing characteristics, and operating conditions are identical
• Package compatibility: Identical 20-DIP through-hole package enables direct board-level substitution without layout modifications
• Series continuity: Both components belong to the 74AS logic family, maintaining design consistency

Frequently Asked Questions (FAQ)

Q: Can the SN74AS804BN be used as a direct replacement for the DM74AS804BN?

A: Yes. The SN74AS804BN is a parametric equivalent with identical electrical specifications, package configuration, and pinout. Direct substitution is supported without circuit modifications.

Q: Are there any differences in supply voltage requirements?

A: No. Both parts operate within the same supply voltage range of 4.5V ~ 5.5V with identical output current ratings and input logic level thresholds.

Q: What is the significance of the DM74AS804BN being obsolete?

A: Obsolete status indicates the DM74AS804BN is no longer manufactured by onsemi. The SN74AS804BN from Texas Instruments provides continued access to equivalent functionality for existing designs and new applications.

Q: Are the propagation delay characteristics identical?

A: Yes. Both parts specify a maximum propagation delay of 4ns at 5V with a 50pF load, ensuring equivalent timing performance in logic circuits.

Q: Does the package type affect substitution compatibility?

A: No. Both parts use the identical 20-DIP (0.300", 7.62mm) through-hole package, enabling direct board-level substitution without PCB redesign.

Q: What compliance certifications apply to the substitute part?

A: The SN74AS804BN carries ROHS3 Compliant and REACH Unaffected certifications, meeting current regulatory requirements for electronic components.