DM74ALS874BWMX Equivalent & Substitute Parts

Part Overview

The DM74ALS874BWMX is a dual 4-bit D-type flip-flop logic integrated circuit manufactured by onsemi, housed in a 24-SOIC surface mount package. This component functions as a master reset flip-flop with tri-state, non-inverted outputs, operating at a maximum clock frequency of 30 MHz. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

DM74ALS874BWMX

onsemiIn Stock: 974DM74ALS874BWMX Datasheet

Current PartRFQ

SN74ALS874BDW

Texas InstrumentsIn Stock: 4365SN74ALS874BDW Datasheet

DirectRFQ

SN74ALS874BDWR

Texas InstrumentsIn Stock: 3878SN74ALS874BDWR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74ALS874BWMX is determined by strict equivalence across the following critical parameters:

• Logic Series: 74ALS (Advanced Low-power Schottky TTL)
• Functional Architecture: Dual 4-bit D-type flip-flop with master reset capability
• Output Configuration: Tri-state, non-inverted outputs
• Electrical Performance: 30 MHz clock frequency, 14 ns maximum propagation delay at 5V with 50pF load
• Trigger Mechanism: Positive edge-triggered
• Power Supply: 4.5V to 5.5V operating range
• Output Drive Capability: 2.6mA high, 24mA low
• Quiescent Current: 21 mA
• Temperature Range: 0°C to 70°C
• Package Footprint: 24-SOIC (0.295", 7.50mm Width) surface mount

All identified substitute parts maintain identical electrical specifications and mechanical compatibility with the original DM74ALS874BWMX.

Parameter Comparison

Engineering Selection Recommendations

SN74ALS874BDWR (Texas Instruments) is the primary recommended substitute. This part carries Active product status, ensuring long-term availability and manufacturing support. It maintains full electrical and mechanical compatibility with the DM74ALS874BWMX and is ROHS3 compliant. The tape and reel packaging format supports automated assembly processes.

SN74ALS874BDW (Texas Instruments) serves as a secondary alternative, offering Last Time Buy status with equivalent electrical specifications and ROHS3 compliance. This part is available in tube packaging.

Both Texas Instruments alternatives provide REACH compliance and identical functional performance to the obsolete onsemi part, enabling direct substitution in existing designs without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS874BDWR directly replace DM74ALS874BWMX in existing PCB designs?

A: Yes. Both parts share identical electrical specifications, pin configurations, and 24-SOIC package footprints. No circuit redesign is required.

Q: What is the difference between SN74ALS874BDW and SN74ALS874BDWR?

A: The primary difference is packaging format. SN74ALS874BDW is supplied in tube packaging, while SN74ALS874BDWR is supplied in tape and reel format. Electrical specifications and performance are identical. Tape and reel packaging is preferred for high-volume automated assembly.

Q: Why is the DM74ALS874BWMX classified as obsolete?

A: The part has reached end-of-life status with the manufacturer. Texas Instruments alternatives remain in active production, providing continued design support and component availability.

Q: Are there any compliance differences between the onsemi and Texas Instruments versions?

A: Texas Instruments versions are ROHS3 compliant. Both manufacturers' parts are REACH unaffected and carry MSL 1 (unlimited) moisture sensitivity ratings. All parts share identical ECCN and HTSUS classifications.

Q: What packaging considerations apply when switching from DM74ALS874BWMX to SN74ALS874BDWR?

A: Both parts use 24-SOIC surface mount packages with identical footprints (0.295", 7.50mm width). PCB layout and reflow profiles require no modification. Tape and reel packaging of the SN74ALS874BDWR supports standard pick-and-place assembly equipment.