DM74ALS133MX Equivalent & Substitute Parts

Part Overview

The DM74ALS133MX is a NAND Gate IC with 1 channel and 13 inputs in a 16-SOIC package, manufactured by onsemi. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 74ALS series logic gate remains functionally relevant across multiple manufacturers, with Texas Instruments offering direct and parametric equivalents that maintain electrical and mechanical compatibility.

Substiute Parts

DM74ALS133MX

onsemiIn Stock: 2328DM74ALS133MX Datasheet

Current PartRFQ

SN74ALS133D

Texas InstrumentsIn Stock: 2895SN74ALS133D Datasheet

DirectRFQ

SN74ALS133NSR

Texas InstrumentsIn Stock: 4767SN74ALS133NSR Datasheet

SimilarRFQ

SN74ALS133DR

Texas InstrumentsIn Stock: 3174SN74ALS133DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS133MX are classified based on the following substitution criteria:

Direct Manufacturer Equivalents maintain identical electrical specifications, package dimensions, and functional characteristics. These parts are interchangeable at the circuit level with no design modifications required.

Similar Manufacturer Parts share all critical electrical parameters but may differ in packaging format (tape & reel vs. tube) or package width tolerance. These are suitable for applications where packaging format flexibility is acceptable.

Parametric Equivalents match all functional and electrical specifications while maintaining the same base product number (74ALS133) and package family. These provide full compatibility for circuit operation.

The key parameters determining substitution eligibility are:

• Logic Type: NAND Gate
• Number of Inputs: 13
• Voltage Supply Range: 4.5V ~ 5.5V
• Output Current Ratings: 400µA, 8mA
• Propagation Delay: 25ns @ 5V, 50pF
• Operating Temperature Range: 0°C ~ 70°C
• Package Family: 16-SOIC

Parameter Comparison

Engineering Selection Recommendations

SN74ALS133DR is the primary recommended substitute. This Texas Instruments part is in active production status, maintains identical package dimensions (16-SOIC 0.154" width), and carries ROHS3 compliance certification. The active product status ensures long-term availability and supply chain stability.

SN74ALS133D serves as an alternative direct equivalent with Last Time Buy status from Texas Instruments. This part matches all electrical and mechanical specifications of the DM74ALS133MX and includes ROHS3 compliance. However, the Last Time Buy designation indicates limited future availability.

SN74ALS133NSR is suitable for applications where tape & reel packaging is preferred over tube packaging. This part maintains active production status and ROHS3 compliance. The package width tolerance (0.209" vs. 0.154") must be verified against PCB footprint requirements before selection.

All three Texas Instruments substitutes provide REACH compliance and identical electrical performance to the obsolete onsemi part.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS133DR replace DM74ALS133MX directly in existing designs? A: Yes. The SN74ALS133DR maintains identical electrical specifications, supply voltage range, output current ratings, propagation delay, and 16-SOIC package dimensions. No circuit modifications are required.

Q: What is the difference between SN74ALS133D and SN74ALS133DR? A: Both parts are electrically identical. The primary difference is product status: SN74ALS133D is Last Time Buy, while SN74ALS133DR is in active production. For new designs, SN74ALS133DR is preferred due to ongoing availability.

Q: Is SN74ALS133NSR compatible with the original DM74ALS133MX footprint? A: SN74ALS133NSR shares the 16-SOIC package family but has a different width tolerance (0.209" vs. 0.154"). Verify PCB footprint specifications before substitution. The electrical performance is identical.

Q: Are all substitute parts RoHS compliant? A: The Texas Instruments substitutes (SN74ALS133D, SN74ALS133NSR, SN74ALS133DR) are ROHS3 compliant. The original onsemi part does not specify RoHS status.

Q: What is the operating temperature range for these parts? A: All parts operate across 0°C to 70°C, maintaining consistent thermal performance across the entire substitute group.

Q: Can these parts be used interchangeably in production? A: SN74ALS133DR and SN74ALS133D are fully interchangeable. SN74ALS133NSR requires footprint verification due to package width tolerance differences but is electrically equivalent.