MM74HC175N Equivalent & Substitute Parts

Part Overview

The MM74HC175N is a D-type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 4-bit configuration and positive edge triggering. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The 16-DIP (0.300", 7.62mm) through-hole package remains widely supported across multiple manufacturers within the 74HC logic series, enabling direct functional replacement in legacy and new designs.

Substiute Parts

MM74HC175N

onsemiIn Stock: 1567MM74HC175N Datasheet

Current PartRFQ

SN74HC175N

Texas InstrumentsIn Stock: 2838SN74HC175N Datasheet

DirectRFQ

CD74HC175E

Harris CorporationIn Stock: 1873CD74HC175E Datasheet

SimilarRFQ

SN74HC175AN

Texas InstrumentsIn Stock: 998SN74HC175AN Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MM74HC175N are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Substitution Criteria:

• Identical base product number (74HC175)
• Matching logic function (D-Type flip-flop, 1 element, 4-bit configuration)
• Identical package type (16-DIP, 0.300", 7.62mm)
• Compatible voltage supply range (2V ~ 6V minimum)
• Through-hole mounting configuration
• Positive edge trigger type
• Complementary output type

Substitute Classification:

Direct Substitutes maintain all electrical and mechanical parameters within acceptable tolerances for drop-in replacement:

• SN74HC175N (Texas Instruments) – Active product status with equivalent performance specifications

Similar Substitutes provide functional equivalence with noted parameter variations that may require design verification:

• CD74HC175E (Harris Corporation) – Obsolete status; reduced clock frequency (35 MHz vs. 70 MHz); extended operating temperature range (-55°C ~ 125°C); increased propagation delay (30ns vs. 26ns)
• SN74HC175AN (Texas Instruments) – Active product status; reduced clock frequency (36 MHz); unspecified propagation delay specification

Parameter Comparison

Engineering Selection Recommendations

Preferred Substitute: SN74HC175N (Texas Instruments)

The SN74HC175N is the recommended direct substitute for the MM74HC175N. This part maintains active product status, ensuring long-term availability and supply chain stability. Electrical performance is equivalent with matching propagation delay (26ns @ 6V, 50pF) and identical output current specifications. RoHS3 compliance supports modern manufacturing and environmental standards. The part is available in tube packaging with 2,775 units in stock.

Alternative Substitute: SN74HC175AN (Texas Instruments)

The SN74HC175AN provides functional equivalence with active product status and RoHS3 compliance. This variant exhibits reduced quiescent current (4 µA vs. 8 µA), beneficial for low-power applications. Clock frequency is reduced to 36 MHz, and propagation delay is not specified in available documentation. This part is suitable for applications where maximum frequency is not a critical constraint. Stock availability is 970 units.

Conditional Substitute: CD74HC175E (Harris Corporation)

The CD74HC175E is functionally compatible but carries obsolete product status, limiting procurement viability for new designs. This part features an extended operating temperature range (-55°C ~ 125°C), making it suitable for industrial or extreme-environment applications where the standard -40°C ~ 85°C range is insufficient. Clock frequency is reduced to 35 MHz with increased propagation delay (30ns). RoHS non-compliance may restrict use in regulated applications. This option is appropriate only when extended temperature performance is a design requirement.

Frequently Asked Questions (FAQ)

Q: Can SN74HC175N be used as a direct replacement for MM74HC175N?

A: Yes. The SN74HC175N is a direct substitute with identical electrical specifications, package configuration, and functional performance. Both parts are 16-DIP through-hole D-type flip-flops with 4-bit configuration, 2V ~ 6V supply voltage, and -40°C ~ 85°C operating temperature range. Propagation delay and output current specifications are equivalent.

Q: What is the primary difference between SN74HC175N and SN74HC175AN?

A: Both are Texas Instruments 74HC175 variants in 16-DIP packages. The SN74HC175N operates at 60 MHz clock frequency with 26ns propagation delay and 8 µA quiescent current. The SN74HC175AN operates at 36 MHz with unspecified propagation delay and 4 µA quiescent current. Selection depends on frequency requirements and power consumption constraints.

Q: Why is CD74HC175E listed as a substitute if it is obsolete?

A: CD74HC175E is included because it provides functional compatibility for applications requiring extended operating temperature range (-55°C ~ 125°C vs. -40°C ~ 85°C). However, obsolete status limits procurement viability. This part should be considered only when temperature performance justifies the supply chain risk.

Q: Are all substitute parts available in the same packaging?

A: All substitute parts use 16-DIP (0.300", 7.62mm) through-hole packages, ensuring mechanical compatibility with existing PCB designs. Packaging format (tube vs. unspecified) may vary by supplier but does not affect electrical or functional performance.

Q: What compliance certifications should I verify for new designs?

A: For new designs, select parts with RoHS3 compliance (SN74HC175N or SN74HC175AN from Texas Instruments). Both parts meet modern environmental and manufacturing standards. CD74HC175E is RoHS non-compliant and should be avoided in regulated applications.

Q: Can I use CD74HC175E in a standard -40°C ~ 85°C application?

A: Yes. CD74HC175E operates within the standard -40°C ~ 85°C temperature range and is functionally compatible. However, its obsolete status and RoHS non-compliance make it unsuitable for new designs. Use only if extended temperature capability (-55°C ~ 125°C) is a specific design requirement.