DM74AS1000AMX Equivalent & Substitute Parts

Part Overview

The DM74AS1000AMX is a NAND Gate IC with 4 channels and 2 inputs per channel, 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 part operates within a 4.5V to 5.5V supply voltage range and is suitable for logic-level switching applications requiring fast propagation delays.

Substiute Parts

DM74AS1000AMX

onsemiIn Stock: 1088DM74AS1000AMX Datasheet

Current PartRFQ

SN74AS1000AD

Texas InstrumentsIn Stock: 2146SN74AS1000AD Datasheet

DirectRFQ

SN74AS1000ANSR

Texas InstrumentsIn Stock: 3310SN74AS1000ANSR Datasheet

SimilarRFQ

SN74AS1000ADR

Texas InstrumentsIn Stock: 6202SN74AS1000ADR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DM74AS1000AMX is determined by strict equivalence across the following critical parameters:

• Logic Type: NAND Gate (4 channels, 2 inputs)
• Voltage - Supply: 4.5V ~ 5.5V
• Current - Output High, Low: 48mA, 48mA
• Input Logic Level - Low: 0.8V
• Input Logic Level - High: 2V
• Max Propagation Delay @ V, Max CL: 4ns @ 5V, 50pF
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Base Product Number: 74AS1000

All substitute parts listed maintain these electrical and functional specifications. Packaging variations (tube, tape & reel) and minor physical dimensions are noted but do not affect electrical compatibility within the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring the DM74AS1000AMX, the following selection criteria apply:

SN74AS1000ADR is the primary substitute. This part is manufactured by Texas Instruments, maintains identical electrical specifications and package dimensions (14-SOIC 0.154"), and carries Active product status with ROHS3 compliance. This option provides the longest lifecycle support and availability.

SN74AS1000AD is a direct functional equivalent with identical specifications and package dimensions. However, its Last Time Buy status indicates limited future availability and should be considered only when SN74AS1000ADR is unavailable.

SN74AS1000ANSR is a parametric equivalent with Active product status and ROHS3 compliance. The package width differs (0.209" versus 0.154"), which may require PCB layout verification for footprint compatibility. This option is suitable when package width variation is acceptable within design constraints.

All substitute parts maintain REACH Unaffected status and MSL 1 (Unlimited) moisture sensitivity rating, consistent with the original component.

Frequently Asked Questions (FAQ)

Q: Can SN74AS1000ANSR be used as a direct replacement for DM74AS1000AMX?

A: SN74AS1000ANSR is electrically equivalent and functionally compatible. However, the package width differs (0.209" versus 0.154"), requiring verification that the PCB footprint accommodates this dimension. Electrical performance and logic operation are identical.

Q: What is the difference between SN74AS1000AD and SN74AS1000ADR?

A: Both parts are electrically identical with matching specifications and 14-SOIC (0.154") package dimensions. The primary difference is packaging format: SN74AS1000AD is supplied in tubes, while SN74AS1000ADR is supplied in tape and reel. SN74AS1000ADR has Active product status, while SN74AS1000AD is Last Time Buy.

Q: Why is DM74AS1000AMX obsolete?

A: The DM74AS1000AMX has reached end-of-life status. Texas Instruments actively manufactures equivalent 74AS1000 variants, making substitution straightforward for new designs or ongoing production.

Q: Are all substitute parts RoHS compliant?

A: SN74AS1000AD, SN74AS1000ANSR, and SN74AS1000ADR are all ROHS3 compliant. The original DM74AS1000AMX does not specify RoHS status.

Q: What are the key electrical parameters that must match for substitution?

A: Supply voltage (4.5V ~ 5.5V), output current (48mA high and low), input logic levels (0.8V low, 2V high), and propagation delay (4ns @ 5V, 50pF) must remain constant. All listed substitutes maintain these specifications.