DM74LS00M NAND Gate IC Equivalent & Substitute Parts

Part Overview

The DM74LS00M is a 4-channel 2-input NAND gate logic IC manufactured by onsemi in a 14-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The DM74LS00M operates within the 74LS logic family standard, which defines compatible electrical and mechanical parameters across multiple manufacturers and package variants.

Substiute Parts

DM74LS00M

onsemiIn Stock: 1204DM74LS00M Datasheet

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SN74LS00D

onsemiIn Stock: 36379SN74LS00D Datasheet

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SN74LS00DR

Texas InstrumentsIn Stock: 3199SN74LS00DR Datasheet

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SN74LS00NSR

Texas InstrumentsIn Stock: 2000361SN74LS00NSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74LS00M is determined by strict adherence to the 74LS logic family standard. All substitute parts must maintain identical electrical specifications: 4-channel NAND gate configuration, 2 inputs per gate, supply voltage range of 4.75V to 5.25V, and matching input/output logic levels. The propagation delay specification of 15ns at 5V with a maximum load capacitance of 50pF establishes the functional performance baseline.

Package compatibility is a critical substitution criterion. The DM74LS00M uses a 14-SOIC package with 0.154" width (3.90mm). Substitute parts must use either the identical 14-SOIC (0.154", 3.90mm) package or the mechanically compatible 14-SO (0.209", 5.30mm) variant, both of which are surface mount configurations with the same pin count and electrical interface.

Operating temperature range of 0°C to 70°C is maintained across all qualified substitutes. Compliance certifications and product status are secondary selection criteria that do not affect electrical or mechanical compatibility but influence long-term availability and regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—SN74LS00D, SN74LS00DR, and SN74LS00NSR—are electrically equivalent to the DM74LS00M and satisfy the core substitution criteria of the 74LS logic family standard.

SN74LS00D and SN74LS00DR are direct package equivalents, both using the 14-SOIC (0.154", 3.90mm) package. SN74LS00DR is manufactured by Texas Instruments and carries Active product status with ROHS3 compliance, making it the preferred choice for new designs and long-term availability. SN74LS00D, also from onsemi, maintains Obsolete status similar to the DM74LS00M.

SN74LS00NSR uses a mechanically compatible 14-SO (0.209", 5.30mm) package variant. This part is manufactured by Texas Instruments with Active product status and ROHS3 compliance. The wider package footprint (5.30mm versus 3.90mm) requires PCB layout verification but does not affect electrical performance or pin connectivity.

For applications requiring RoHS3 compliance and assured long-term supply, SN74LS00DR or SN74LS00NSR are recommended. For direct footprint compatibility with existing designs using the narrower 14-SOIC package, SN74LS00DR is the optimal selection.

Frequently Asked Questions (FAQ)

Q: Can SN74LS00NSR be used as a direct replacement for DM74LS00M on the same PCB?

A: SN74LS00NSR is electrically equivalent but uses a 14-SO package with 5.30mm width compared to the DM74LS00M's 14-SOIC package with 3.90mm width. Pin count and electrical interface are identical. PCB footprint compatibility must be verified; the wider package may not fit existing 14-SOIC pads without layout modification.

Q: What is the difference between SN74LS00D and SN74LS00DR?

A: Both parts are electrically identical 4-channel NAND gates in 14-SOIC packages from onsemi and Texas Instruments respectively. The primary difference is packaging format: SN74LS00D is supplied in standard packaging, while SN74LS00DR is supplied in Cut Tape (CT) and Digi-Reel format for automated assembly. Electrical specifications and package dimensions are identical.

Q: Are all substitute parts compatible with the original DM74LS00M supply voltage range?

A: Yes. All substitute parts operate within the identical supply voltage range of 4.75V to 5.25V. Input and output logic levels, propagation delay, and current specifications are matched across all parts.

Q: Does the propagation delay difference affect substitution compatibility?

A: The DM74LS00M specifies 15ns propagation delay at 50pF load capacitance, while substitute parts specify 15ns at 15pF. This indicates substitute parts meet or exceed the performance specification at lower load conditions. For applications operating at or below 50pF load capacitance, all parts are functionally equivalent.

Q: Which substitute part has the best long-term availability?

A: SN74LS00DR and SN74LS00NSR, both manufactured by Texas Instruments with Active product status, have superior long-term availability compared to the Obsolete DM74LS00M and SN74LS00D. Texas Instruments maintains active production and distribution for these parts.