DM74ALS574AWM Equivalent & Substitute Parts

Part Overview

The DM74ALS574AWM is a D-Type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit capacity and tri-state, non-inverted output configuration. This component operates at a maximum clock frequency of 35 MHz with a propagation delay of 14ns at 5V with 50pF load. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement.

Substiute Parts

DM74ALS574AWM

onsemiIn Stock: 2200DM74ALS574AWM Datasheet

Current PartRFQ

SN74ALS574BDW

Texas InstrumentsIn Stock: 3297SN74ALS574BDW Datasheet

DirectRFQ

SN74ALS574BDWR

Texas InstrumentsIn Stock: 2174SN74ALS574BDWR Datasheet

DirectRFQ

SN74ALS574BNSR

Texas InstrumentsIn Stock: 2993SN74ALS574BNSR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DM74ALS574AWM is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Series: 74ALS
• Type: D-Type Flip-Flop
• Number of Elements: 1
• Number of Bits per Element: 8
• Output Type: Tri-State, Non-Inverted
• Clock Frequency: 35 MHz
• Max Propagation Delay: 14ns @ 5V, 50pF
• Trigger Type: Positive Edge
• Voltage Supply Range: 4.5V ~ 5.5V
• Current - Output High, Low: 2.6mA, 24mA
• Current - Quiescent (Iq): 18 mA
• Operating Temperature: 0°C ~ 70°C (TA)

Package Considerations: Substitute parts are grouped into two categories based on package specifications. Direct substitutes maintain identical package dimensions (20-SOIC 0.295", 7.50mm Width), while similar substitutes employ the same 20-SOIC package family with different physical dimensions (0.209", 5.30mm Width), requiring mechanical compatibility verification in the target application.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Identical Package Dimensions):

SN74ALS574BDWR (Texas Instruments) is the primary recommended substitute. This part maintains active product status with ROHS3 compliance and is available in Cut Tape and Digi-Reel packaging. All electrical and mechanical parameters match the DM74ALS574AWM specification exactly, with identical 20-SOIC package dimensions (0.295", 7.50mm Width).

SN74ALS574BDW (Texas Instruments) provides an alternative direct substitute with Last Time Buy status and ROHS3 compliance. This part is functionally equivalent with identical electrical specifications and package dimensions, though procurement should account for its end-of-life classification.

Similar Substitute (Alternate Package Variant):

SN74ALS574BNSR (Texas Instruments) is classified as a similar substitute due to package dimension variance. While all electrical parameters and the 20-SOIC package family remain identical, the physical dimensions differ (0.209", 5.30mm Width versus 0.295", 7.50mm Width). This part maintains active product status with ROHS3 compliance. Selection requires confirmation that the narrower package width is compatible with the target PCB layout and assembly process.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS574BNSR be used as a direct replacement for DM74ALS574AWM?

A: SN74ALS574BNSR is electrically equivalent but employs a narrower 20-SOIC package variant (0.209" versus 0.295" width). Mechanical compatibility with the existing PCB footprint must be confirmed before substitution. If the PCB is designed for the wider package, layout modification may be required.

Q: What is the difference between SN74ALS574BDW and SN74ALS574BDWR?

A: Both parts are electrically and mechanically identical. The primary difference is packaging format: SN74ALS574BDW is supplied in Tube packaging, while SN74ALS574BDWR is supplied in Cut Tape and Digi-Reel format. Selection depends on procurement and assembly requirements.

Q: Why is the DM74ALS574AWM classified as obsolete?

A: The DM74ALS574AWM has reached end-of-life status with onsemi. Texas Instruments maintains active production of functionally equivalent 74ALS574 variants, making these parts the recommended long-term solution for new designs and ongoing support.

Q: Are all substitute parts RoHS compliant?

A: Yes. All Texas Instruments substitute parts (SN74ALS574BDW, SN74ALS574BDWR, and SN74ALS574BNSR) are ROHS3 compliant. The original onsemi part RoHS status is not specified in the available documentation.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by equivalence across series (74ALS), flip-flop type (D-Type), element count (1), bit capacity (8), output configuration (Tri-State, Non-Inverted), clock frequency (35 MHz), propagation delay (14ns @ 5V, 50pF), trigger type (Positive Edge), supply voltage (4.5V ~ 5.5V), output current ratings (2.6mA, 24mA), quiescent current (18 mA), and operating temperature range (0°C ~ 70°C). Package dimensions must also be verified for mechanical compatibility.