DM74ALS174N Equivalent & Substitute Parts

Part Overview

The DM74ALS174N is a D-Type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 6 bits per element in a 16-DIP package. This component functions as a master reset flip-flop with positive edge triggering and non-inverted outputs. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and component procurement.

Substiute Parts

DM74ALS174N

onsemiIn Stock: 3142DM74ALS174N Datasheet

Current PartRFQ

SN74ALS174N

Texas InstrumentsIn Stock: 3320SN74ALS174N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DM74ALS174N is determined by strict equivalence across the following critical parameters:

• Base product number: 74ALS174
• Logic function: D-Type flip-flop with master reset
• Element and bit configuration: 1 element, 6 bits per element
• Electrical performance: 50 MHz clock frequency, 17 ns propagation delay @ 5V/50pF
• Output characteristics: Non-inverted, positive edge trigger
• Voltage supply range: 4.5V ~ 5.5V
• Current specifications: 400µA/8mA output, 19 mA quiescent
• Operating temperature: 0°C ~ 70°C
• Package form factor: 16-DIP (0.300", 7.62mm) through-hole mounting

Only components meeting all these parameters qualify as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS174N manufactured by Texas Instruments is a direct functional equivalent to the DM74ALS174N. Both components share identical electrical specifications, timing characteristics, and package form factors. The primary distinction is product status: the DM74ALS174N is obsolete, while the SN74ALS174N maintains active production status.

For new designs or component replenishment, the SN74ALS174N is the appropriate selection due to its active availability and ROHS3 compliance certification. Both components maintain REACH compliance and identical ECCN/HTSUS classifications. The through-hole 16-DIP package format ensures mechanical and electrical compatibility in existing PCB layouts designed for the DM74ALS174N.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS174N directly replace the DM74ALS174N in existing circuits?

A: Yes. Both components are electrically and mechanically identical across all specified parameters. The 16-DIP through-hole package, pin configuration, voltage supply range, timing characteristics, and output drive capabilities are equivalent. Direct socket substitution is supported.

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

A: The DM74ALS174N is classified as obsolete, indicating onsemi has discontinued production. The SN74ALS174N remains in active production by Texas Instruments. For ongoing procurement and new applications, the active-status SN74ALS174N is the recommended source.

Q: Are there compliance differences between these parts?

A: The SN74ALS174N carries ROHS3 compliance certification, while the DM74ALS174N does not specify this status. Both maintain REACH compliance and identical ECCN/HTSUS classifications. For applications requiring ROHS3 compliance, the SN74ALS174N is the appropriate choice.

Q: Does packaging differ between these components?

A: No. Both components use identical 16-DIP (0.300", 7.62mm) through-hole packaging. PCB layouts, socket compatibility, and mechanical mounting are fully interchangeable.

Q: Are the electrical performance characteristics identical?

A: Yes. Clock frequency (50 MHz), propagation delay (17 ns @ 5V, 50pF), output current specifications (400µA high, 8mA low), quiescent current (19 mA), and supply voltage range (4.5V ~ 5.5V) are identical across both components.