DM74AS1804N Equivalent & Substitute Parts

Part Overview

The DM74AS1804N is a NAND Gate IC with 6 channels and 2 inputs per channel, housed in a 20-PDIP package. Manufactured by onsemi, this component is classified as obsolete. Due to its obsolete status and limited availability from the original manufacturer, identifying equivalent substitute parts is essential for system design continuity and procurement planning. The SN74AS804BN from Texas Instruments provides a direct parametric equivalent for applications requiring this logic function.

Substiute Parts

DM74AS1804N

onsemiIn Stock: 881DM74AS1804N 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 DM74AS1804N based on the following criteria:

• Logic Configuration: Both parts implement identical NAND gate logic with 6 circuits and 2 inputs per channel
• Electrical Specifications: Supply voltage range (4.5V ~ 5.5V), output current ratings (48mA high/low), input logic levels (0.8V low, 2V high), and propagation delay (4ns @ 5V, 50pF) are identical
• Thermal Operating Range: Both operate across 0°C ~ 70°C
• Package Compatibility: Both use 20-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical and electrical pin compatibility
• Series Classification: Both belong to the 74AS logic series

Parameter Comparison

Engineering Selection Recommendations

The SN74AS804BN is the appropriate substitute for the DM74AS1804N based on the following factors:

• Product Status Alignment: The SN74AS804BN maintains active product status, ensuring ongoing availability and manufacturer support, whereas the DM74AS1804N is obsolete
• Regulatory Compliance: The SN74AS804BN is ROHS3 compliant, meeting current environmental and regulatory requirements
• Electrical Equivalence: All functional and electrical parameters are identical, enabling direct substitution without circuit redesign
• Package Compatibility: Both components use identical 20-DIP through-hole packaging, allowing direct PCB footprint compatibility
• Certification Alignment: Both parts maintain REACH Unaffected status, ensuring compliance with chemical substance regulations

Frequently Asked Questions (FAQ)

Q: Can the SN74AS804BN be used as a direct replacement for the DM74AS1804N?

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

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

A: No. Both parts use the 20-DIP package with identical pin assignments for the 6-channel NAND gate configuration.

Q: What is the significance of the DM74AS1804N being obsolete?

A: Obsolete status indicates the part is no longer manufactured by onsemi. The SN74AS804BN, being active, provides assured long-term availability and supply chain continuity.

Q: Do the supply voltage requirements differ between these parts?

A: No. Both parts operate within the identical 4.5V ~ 5.5V supply voltage range.

Q: Is the SN74AS804BN suitable for new designs?

A: Yes. The SN74AS804BN is an active product with current manufacturing support and regulatory compliance, making it suitable for both legacy replacement and new design applications.

Q: Are there packaging format options for the SN74AS804BN?

A: The SN74AS804BN is supplied in tube packaging. The DM74AS1804N packaging format is not specified in the provided data.