DM74AS74SJX Equivalent & Substitute Parts

Part Overview

The DM74AS74SJX is a dual D-type flip-flop logic integrated circuit manufactured by onsemi, housed in a 14-SOIC surface mount package. This component provides two independent 1-bit D-type flip-flops with set and reset functionality, operating at a maximum clock frequency of 105 MHz. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

DM74AS74SJX

onsemiIn Stock: 772DM74AS74SJX Datasheet

Current PartRFQ

SN74AS74ANSR

Texas InstrumentsIn Stock: 3713SN74AS74ANSR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74AS74SJX is determined by strict equivalence across the following critical parameters:

• Logic Function: Dual D-type flip-flop with set/reset capability
• Electrical Performance: 105 MHz clock frequency, 9 ns propagation delay @ 5V/50pF, complementary outputs
• Electrical Characteristics: 4.5V–5.5V supply voltage, 2mA/20mA output current, 16 mA quiescent current
• Trigger Mechanism: Positive edge-triggered operation
• Package Specification: 14-SOIC (0.209", 5.30mm Width) surface mount configuration
• Series Classification: 74AS logic family

The SN74AS74ANSR from Texas Instruments meets all these criteria and is classified as an active product, providing direct functional and pin-compatible replacement capability.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS74ANSR is a direct functional equivalent to the DM74AS74SJX. Both components are classified within the 74AS logic family and share identical electrical specifications, timing characteristics, and package geometry. The primary distinction is product lifecycle status: the DM74AS74SJX is obsolete, while the SN74AS74ANSR maintains active production status from Texas Instruments.

The SN74AS74ANSR carries RoHS3 compliance certification, meeting current environmental and regulatory requirements for new designs and manufacturing operations. Both parts maintain REACH Unaffected status and EAR99 export classification.

Selection of the SN74AS74ANSR is appropriate for applications requiring component continuity, long-term availability assurance, and compliance with modern manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can the SN74AS74ANSR directly replace the DM74AS74SJX in existing designs?

A: Yes. The SN74AS74ANSR is pin-compatible and electrically equivalent. Both components feature identical pinout, voltage supply requirements, timing specifications, and output characteristics. No circuit modifications are required for substitution.

Q: Are there differences in packaging between these parts?

A: Both parts use the 14-SOIC (0.209", 5.30mm Width) surface mount package. Physical dimensions and land pattern requirements are identical, permitting direct PCB assembly compatibility.

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

A: The DM74AS74SJX is classified as obsolete, indicating onsemi has discontinued production. The SN74AS74ANSR maintains active production status from Texas Instruments, ensuring ongoing availability and supply chain reliability for new procurements and system support.

Q: Do compliance certifications differ between these parts?

A: The SN74AS74ANSR carries RoHS3 compliance certification. Both parts maintain REACH Unaffected status and EAR99 export classification. The SN74AS74ANSR is recommended for applications subject to modern environmental and regulatory compliance requirements.

Q: Are there any performance differences in clock frequency or propagation delay?

A: No. Both components operate at an identical maximum clock frequency of 105 MHz and exhibit identical maximum propagation delay of 9 ns at 5V with 50pF load. Timing-critical applications will experience equivalent performance with either part.