DM74AS574WM Equivalent & Substitute Parts

Part Overview

The DM74AS574WM is an octal D-type flip-flop logic integrated circuit manufactured by onsemi, housed in a 20-SOIC surface mount package. This component functions as a standard D-type flip-flop with 8-bit parallel data storage and tri-state outputs, triggered on positive clock edges. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

DM74AS574WM

onsemiIn Stock: 978DM74AS574WM Datasheet

Current PartRFQ

SN74AS574DW

Texas InstrumentsIn Stock: 882SN74AS574DW Datasheet

DirectRFQ

SN74AS574DWR

Texas InstrumentsIn Stock: 3268SN74AS574DWR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM74AS574WM are qualified based on strict electrical and mechanical compatibility within the 74AS574 logic family. The following parameters define valid substitution:

• Base product number: 74AS574
• Package type: 20-SOIC (0.295", 7.50mm Width)
• Function: D-Type flip-flop, 8-bit, positive edge triggered
• Output configuration: Tri-state, non-inverted
• Voltage supply range: 4.5V ~ 5.5V
• Operating temperature range: 0°C ~ 70°C
• Mounting type: Surface mount

All qualified substitutes maintain identical pinout, electrical function, and package footprint. Variations in clock frequency (80 MHz vs. 90 MHz) and product status do not affect functional interchangeability in standard applications operating within the specified electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the DM74AS574WM, the SN74AS574DWR (Texas Instruments, active status) is the primary recommended substitute. This part maintains full electrical and mechanical compatibility while offering active product status and ongoing manufacturer support. The SN74AS574DWR is available in bulk packaging with higher inventory levels, supporting production continuity.

The SN74AS574DW (Texas Instruments, last time buy status) provides an alternative substitute with identical electrical specifications and 20-SOIC packaging. However, its last time buy status indicates limited future availability, making it suitable only for near-term procurement requirements.

Both Texas Instruments substitutes are REACH compliant and classified under ECCN EAR99, matching the regulatory profile of the original onsemi part.

Frequently Asked Questions (FAQ)

Q: Can SN74AS574DW and SN74AS574DWR be used interchangeably with DM74AS574WM?

A: Yes. Both parts are direct functional and pin-compatible substitutes. They share identical electrical specifications, package geometry, and operating parameters within the 74AS574 logic family.

Q: What is the difference between SN74AS574DW and SN74AS574DWR?

A: The primary difference is product status and packaging. SN74AS574DW is last time buy (limited future availability), while SN74AS574DWR is active (ongoing production). SN74AS574DWR is supplied in bulk packaging; SN74AS574DW is supplied in tube packaging. Electrical specifications are identical.

Q: Does the clock frequency difference (80 MHz vs. 90 MHz) affect compatibility?

A: No. The DM74AS574WM operates at 80 MHz, while both Texas Instruments substitutes operate at 90 MHz. This represents a performance improvement and does not create compatibility issues. Applications designed for 80 MHz operation will function correctly with 90 MHz parts.

Q: Are there any compliance or certification differences?

A: The SN74AS574DWR and SN74AS574DW are ROHS3 compliant (where specified). All parts are REACH unaffected and classified as EAR99. Moisture sensitivity levels are equivalent or undefined, presenting no substitution barriers.

Q: What packaging options are available for substitutes?

A: SN74AS574DW is supplied in tube packaging. SN74AS574DWR is supplied in bulk packaging. Both maintain the 20-SOIC surface mount package footprint required for direct PCB compatibility.