DM74ALS174MX Equivalent & Substitute Parts

Part Overview

The DM74ALS174MX is a D-Type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 6 bits per element in a 16-SOIC surface mount package. This component functions as a master reset flip-flop with positive edge triggering and non-inverted outputs, operating at a maximum clock frequency of 50 MHz.

The DM74ALS174MX is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

DM74ALS174MX

onsemiIn Stock: 2412DM74ALS174MX Datasheet

Current PartRFQ

SN74ALS174D

Texas InstrumentsIn Stock: 2640SN74ALS174D Datasheet

DirectRFQ

SN74ALS174DR

Texas InstrumentsIn Stock: 5717SN74ALS174DR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS174MX are determined by strict equivalence across the following critical parameters:

• Logic Function: D-Type flip-flop with 1 element, 6 bits per element
• Electrical Performance: 50 MHz clock frequency, 17 ns maximum propagation delay at 5V and 50pF load
• Trigger Characteristics: Positive edge triggering with non-inverted outputs
• Power Supply: 4.5V to 5.5V operating voltage range
• Output Characteristics: 400µA output high current, 8mA output low current
• Quiescent Current: 19 mA maximum
• Temperature Range: 0°C to 70°C operating temperature
• Package: 16-SOIC (0.154", 3.90mm Width) surface mount configuration
• Series Compatibility: 74ALS logic family

The substitute parts SN74ALS174D and SN74ALS174DR, both manufactured by Texas Instruments, meet all specified electrical and mechanical parameters. These parts are functionally and electrically interchangeable with the DM74ALS174MX within the defined operating conditions.

Parameter Comparison

Engineering Selection Recommendations

SN74ALS174DR (Texas Instruments, Active Status) is the primary recommended substitute for the DM74ALS174MX. This part maintains active product status with full manufacturer support, ensuring long-term availability and supply chain stability. The SN74ALS174DR is supplied in Tape & Reel packaging and carries ROHS3 compliance certification, meeting modern environmental and regulatory requirements.

SN74ALS174D (Texas Instruments, Last Time Buy) serves as a secondary substitute option. While classified as Last Time Buy, this part remains available and meets all electrical and mechanical specifications. It is supplied in Tube packaging and also carries ROHS3 compliance.

Both Texas Instruments substitutes provide identical electrical performance and functional characteristics to the obsolete DM74ALS174MX, with the distinction that SN74ALS174DR offers extended availability through its active product status.

Frequently Asked Questions (FAQ)

Q: Are SN74ALS174D and SN74ALS174DR electrically interchangeable with DM74ALS174MX?

A: Yes. Both parts are electrically and functionally equivalent. They share identical specifications for clock frequency (50 MHz), propagation delay (17 ns @ 5V, 50pF), output characteristics (400µA high, 8mA low), quiescent current (19 mA), and operating voltage range (4.5V to 5.5V). All three parts are D-Type flip-flops with 1 element and 6 bits per element, with positive edge triggering and non-inverted outputs.

Q: What is the difference between SN74ALS174D and SN74ALS174DR?

A: The primary difference is packaging format. SN74ALS174D is supplied in Tube packaging, while SN74ALS174DR is supplied in Tape & Reel (TR) format. Both parts are functionally identical and meet the same electrical specifications. SN74ALS174DR maintains active product status, whereas SN74ALS174D is classified as Last Time Buy.

Q: Can I use these substitutes in existing designs without modification?

A: Yes. The substitute parts are pin-compatible and functionally equivalent within the specified operating conditions (0°C to 70°C, 4.5V to 5.5V supply voltage). No circuit modifications are required for direct substitution.

Q: Why is the DM74ALS174MX obsolete?

A: The DM74ALS174MX is classified as obsolete by onsemi. Texas Instruments continues to manufacture equivalent parts under the 74ALS174 base product number, ensuring design continuity through the SN74ALS174D and SN74ALS174DR variants.

Q: Are there compliance differences between the parts?

A: The Texas Instruments substitutes (SN74ALS174D and SN74ALS174DR) carry ROHS3 compliance certification. All three parts are REACH Unaffected and carry MSL Level 1 (Unlimited) moisture sensitivity ratings. Both substitutes meet modern environmental and regulatory standards.

Q: Which substitute should I select for new designs?

A: SN74ALS174DR is recommended for new designs due to its active product status, ensuring long-term availability and manufacturer support. The Tape & Reel packaging format is standard for high-volume production environments.