DM74ALS874BWM Equivalent & Substitute Parts

Part Overview

The DM74ALS874BWM is a dual 4-bit D-type flip-flop logic integrated circuit manufactured by onsemi, featuring tri-state non-inverted outputs and master reset functionality. This component operates at 30 MHz clock frequency with 14ns maximum propagation delay at 5V with 50pF load. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

DM74ALS874BWM

onsemiIn Stock: 908DM74ALS874BWM Datasheet

Current PartRFQ

SN74ALS874BDW

Texas InstrumentsIn Stock: 4365SN74ALS874BDW Datasheet

DirectRFQ

SN74ALS874BDWR

Texas InstrumentsIn Stock: 3878SN74ALS874BDWR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS874BWM are qualified based on strict electrical and mechanical parameter matching within the 74ALS logic family. The substitution criteria are:

Critical Parameters for Substitution:

• Identical logic function: Dual 4-bit D-type flip-flop with master reset
• Matching output configuration: Tri-state, non-inverted outputs
• Identical electrical specifications: 30 MHz clock frequency, 14ns propagation delay at 5V/50pF, 4.5V–5.5V supply voltage
• Identical trigger type: Positive edge
• Identical package: 24-SOIC (0.295", 7.50mm Width)
• Identical current ratings: 2.6mA output high, 24mA output low, 21mA quiescent current
• Identical operating temperature range: 0°C ~ 70°C

The substitute parts SN74ALS874BDW and SN74ALS874BDWR, both manufactured by Texas Instruments, meet all these criteria and are therefore direct functional and pin-compatible replacements.

Parameter Comparison

Engineering Selection Recommendations

SN74ALS874BDWR (Texas Instruments) - Recommended Primary Substitute

The SN74ALS874BDWR is the preferred substitute for the obsolete DM74ALS874BWM. This part carries Active product status, ensuring long-term availability and supply chain stability. It is ROHS3 compliant and supplied in Tape & Reel packaging, meeting modern manufacturing and environmental standards. All electrical and mechanical parameters are identical to the original part, providing direct pin-compatible replacement capability.

SN74ALS874BDW (Texas Instruments) - Secondary Substitute

The SN74ALS874BDW is functionally equivalent and electrically identical to the DM74ALS874BWM. However, this part is classified as Last Time Buy, indicating limited future availability. It is ROHS3 compliant and supplied in Tube packaging. This part is suitable for applications where immediate substitution is required but long-term procurement is not critical.

Both Texas Instruments substitutes maintain full electrical compatibility with the original onsemi part across all specified parameters, including supply voltage, clock frequency, propagation delay, output current ratings, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS874BDW and SN74ALS874BDWR be used interchangeably with DM74ALS874BWM?

A: Yes. Both Texas Instruments parts are direct functional and pin-compatible replacements. All critical electrical parameters—clock frequency, propagation delay, supply voltage, output current, and operating temperature—are identical. The only differences are product status and packaging format (Tube vs. Tape & Reel).

Q: What is the difference between SN74ALS874BDW and SN74ALS874BDWR?

A: Both parts are electrically identical. The primary differences are: SN74ALS874BDW is Last Time Buy status with Tube packaging; SN74ALS874BDWR is Active status with Tape & Reel packaging. For new designs and long-term applications, SN74ALS874BDWR is recommended due to its active product status.

Q: Are there any package compatibility concerns when substituting these parts?

A: No. All three parts use the identical 24-SOIC (0.295", 7.50mm Width) surface mount package. PCB footprints and assembly processes require no modification.

Q: Do the substitute parts meet current environmental and compliance standards?

A: Yes. Both Texas Instruments substitutes are ROHS3 compliant. The original onsemi part does not specify RoHS status. All parts maintain REACH Unaffected status and carry EAR99 ECCN classification.

Q: What is the significance of the product status differences?

A: The DM74ALS874BWM is obsolete, meaning onsemi no longer manufactures or supports it. SN74ALS874BDW is Last Time Buy, indicating Texas Instruments will discontinue production after existing inventory is depleted. SN74ALS874BDWR is Active, meaning Texas Instruments continues full production and support. For new designs, Active status parts ensure long-term availability.