MM74HC174M Equivalent & Substitute Parts

Part Overview

The MM74HC174M is a 6-bit D-type flip-flop logic integrated circuit manufactured by onsemi in a 16-SOIC surface mount package. This component functions as a master reset flip-flop with positive edge triggering, designed for digital logic applications requiring synchronous data storage and control. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications.

Substiute Parts

MM74HC174M

onsemiIn Stock: 8672MM74HC174M Datasheet

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MC74HC174ADR2G

onsemiIn Stock: 10317MC74HC174ADR2G Datasheet

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NLV74HC174ADR2G

onsemiIn Stock: 3410NLV74HC174ADR2G Datasheet

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CD74HC174M

Harris CorporationIn Stock: 9119CD74HC174M Datasheet

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74HC174D,653

NXP SemiconductorsIn Stock: 3507774HC174D,653 Datasheet

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74HC174D-Q100J

Nexperia USA Inc.In Stock: 110574HC174D-Q100J Datasheet

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CD74HC174M96

Harris CorporationIn Stock: 5135CD74HC174M96 Datasheet

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MC74HC174ADG

onsemiIn Stock: 1164MC74HC174ADG Datasheet

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SN74HC174D

Texas InstrumentsIn Stock: 1082SN74HC174D Datasheet

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SN74HC174DR

Texas InstrumentsIn Stock: 3512SN74HC174DR Datasheet

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SN74HC174DRG4

Texas InstrumentsIn Stock: 18366SN74HC174DRG4 Datasheet

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SN74HC174NSR

Texas InstrumentsIn Stock: 3150SN74HC174NSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MM74HC174M are qualified based on the following critical parameters that must match or exceed the original specification:

Mandatory Matching Parameters:

• Base product number: 74HC174
• Type: D-Type flip-flop
• Number of elements: 1
• Number of bits per element: 6
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Trigger type: Positive Edge
• Output type: Non-Inverted
• Voltage supply range: 2V ~ 6V (minimum requirement)

Performance Parameters (Equal or Better):

• Clock frequency: ≥31 MHz
• Max propagation delay: ≤28ns @ 6V, 50pF
• Current output capability: ≥5.2mA
• Operating temperature range: Must encompass -40°C to 85°C minimum

Substitute parts are categorized as Active (current production), Obsolete (discontinued but available), or Discontinued at DiGi Electronics based on manufacturer product status. Parts meeting all mandatory parameters and performance specifications are listed as direct equivalents or upgrades.

Parameter Comparison

Engineering Selection Recommendations

For Active Production (Recommended Primary Choices):

MC74HC174ADR2G (onsemi) is the preferred direct substitute. It maintains onsemi manufacturing continuity, offers improved propagation delay (19ns vs 28ns), reduced quiescent current (4µA vs 8µA), and extended operating temperature range (-55°C to 125°C). Active product status ensures ongoing availability and supply chain stability.

SN74HC174DR (Texas Instruments) provides an alternative from a different manufacturer with superior clock frequency (50MHz vs 31MHz) and faster propagation delay (14ns vs 28ns). Active status and established supply chain make this suitable for applications requiring higher performance margins.

74HC174D-Q100J (Nexperia USA Inc.) is qualified for automotive applications with AEC-Q100 certification. It delivers the highest clock frequency (107MHz) and maintains the original operating temperature range (-40°C to 85°C). This part is suitable for automotive-grade designs requiring formal qualification documentation.

74HC174D,653 (NXP Semiconductors) offers the highest performance specification with 107MHz clock frequency and active product status. Bulk packaging and extended temperature range (-40°C to 125°C) support high-volume production environments.

For Legacy or Constrained Supply Situations:

NLV74HC174ADR2G (onsemi) and CD74HC174M96 (Harris Corporation) are obsolete but available in inventory. These maintain electrical compatibility with the original MM74HC174M and can be used when active alternatives are unavailable, though long-term supply cannot be guaranteed.

Compliance Considerations:

MC74HC174ADR2G and SN74HC174DR carry ROHS3 compliance certification. The 74HC174D-Q100J includes automotive-grade qualification (AEC-Q100). CD74HC174M and CD74HC174M96 are RoHS non-compliant and should be avoided in applications requiring RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can I use any 74HC174 variant as a direct replacement for MM74HC174M?

A: No. While all qualified substitutes share the 74HC174 base product number, they must match specific parameters: 16-SOIC package, 6-bit configuration, positive edge trigger, non-inverted output, and 2V-6V supply voltage. Additionally, performance specifications (clock frequency, propagation delay, output current) must meet or exceed the original part's ratings.

Q: What is the difference between MC74HC174ADR2G and MM74HC174M?

A: MC74HC174ADR2G is an active product from the same manufacturer (onsemi) with improved electrical performance: faster propagation delay (19ns vs 28ns), lower quiescent current (4µA vs 8µA), higher clock frequency (35MHz vs 31MHz), and extended operating temperature range (-55°C to 125°C vs -40°C to 85°C). The packaging format differs (Tape & Reel vs Bulk), but the 16-SOIC footprint is identical.

Q: Are there performance differences between Texas Instruments and onsemi versions?

A: Yes. Texas Instruments SN74HC174DR and SN74HC174DRG4 offer superior clock frequency (50MHz) and faster propagation delay (14ns) compared to onsemi variants. However, they maintain the same supply voltage range, output current capability, and 16-SOIC package. Selection depends on whether the application requires higher speed performance or prefers single-source manufacturing.

Q: What does "Discontinued at DiGi Electronics" mean for part selection?

A: This status indicates the part is no longer actively distributed through DiGi Electronics but may remain available through other channels or in existing inventory. SN74HC174D and SN74HC174DRG4 carry this status. For new designs, active-status parts (MC74HC174ADR2G, SN74HC174DR, 74HC174D-Q100J, 74HC174D,653) are preferred to ensure long-term supply availability.

Q: Can I use 74HC174D-Q100J in non-automotive applications?

A: Yes. The AEC-Q100 automotive qualification is an additional certification that does not restrict use in non-automotive applications. 74HC174D-Q100J meets all standard 74HC174 electrical specifications and can be used in any application requiring a 6-bit D-type flip-flop in 16-SOIC packaging.

Q: What is the significance of packaging format (Bulk, Tape & Reel, Tube)?

A: Packaging format affects handling, storage, and automated assembly compatibility but does not change electrical performance. Bulk packaging suits manual assembly or small quantities. Tape & Reel format is standard for high-volume automated pick-and-place assembly. Tube packaging is used for manual handling. The 16-SOIC footprint remains identical across all packaging formats.

Q: Why do some parts have lower quiescent current (4µA vs 8µA)?

A: Lower quiescent current indicates improved power efficiency during idle states. MC74HC174ADR2G and MC74HC174ADG achieve 4µA through manufacturing process optimization. This difference is significant in battery-powered or low-power applications but does not affect functional compatibility or switching performance.

Q: Is RoHS compliance mandatory for my application?

A: RoHS compliance is mandatory only if your application or end-market requires it (EU regulations, automotive standards, or customer specifications). MC74HC174ADR2G, SN74HC174DR, and 74HC174D-Q100J are ROHS3 compliant. CD74HC174M and CD74HC174M96 are RoHS non-compliant and should be avoided in regulated applications.