SN74HC175D Equivalent & Substitute Parts

Part Overview

The SN74HC175D is a D-type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 4-bit configuration and complementary output type. This device is classified as a Master Reset function flip-flop in the 74HC logic series. The SN74HC175D is currently discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

SN74HC175D

Texas InstrumentsIn Stock: 704SN74HC175D Datasheet

Current PartRFQ

SN74HC175DR

Texas InstrumentsIn Stock: 7647SN74HC175DR Datasheet

DirectRFQ

MM74HC175M

Fairchild SemiconductorIn Stock: 2022MM74HC175M Datasheet

DirectRFQ

MM74HC175MX

onsemiIn Stock: 7909MM74HC175MX Datasheet

DirectRFQ

74HC175D,653

Nexperia USA Inc.In Stock: 986974HC175D,653 Datasheet

MFR RecommendedRFQ

MC74HC175ADG

onsemiIn Stock: 1770MC74HC175ADG Datasheet

MFR RecommendedRFQ

MC74HC175ADR2G

onsemiIn Stock: 1240MC74HC175ADR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74HC175D are qualified based on the following criteria:

Electrical Compatibility Parameters:

• Base product number: 74HC175
• Function: Master Reset
• Type: D-Type flip-flop
• Number of Elements: 1
• Number of Bits per Element: 4
• Output Type: Complementary
• Trigger Type: Positive Edge
• Voltage Supply Range: 2V ~ 6V
• Mounting Type: Surface Mount

Mechanical Compatibility Parameters:

• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Supplier Device Package: 16-SOIC or 16-SO

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts must maintain identical electrical function, pin configuration, and package footprint. Variations in clock frequency, propagation delay, quiescent current, and operating temperature range are permitted within the 74HC175 product family, as these represent performance enhancements or extended specifications rather than functional changes.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74HC175DR (Texas Instruments)

The SN74HC175DR is the direct Texas Instruments equivalent with active product status. This part maintains identical electrical specifications to the discontinued SN74HC175D, including 60 MHz clock frequency, 26ns propagation delay, and -40°C to 85°C operating temperature range. The SN74HC175DR is available in Cut Tape and Digi-Reel packaging with 7548 units in stock, providing immediate procurement availability.

Secondary Recommendation: 74HC175D,653 (Nexperia USA Inc.)

The 74HC175D,653 is manufacturer-recommended and offers enhanced performance specifications. This part features 89 MHz clock frequency and extended operating temperature range (-40°C to 125°C), providing superior thermal performance for applications requiring higher temperature operation. The part is ROHS3 compliant with MSL 1 rating and maintains full electrical compatibility with the original SN74HC175D.

Alternative Recommendation: MC74HC175ADG or MC74HC175ADR2G (onsemi)

Both onsemi variants provide extended operating temperature range (-55°C to 125°C) and lower quiescent current (4 µA versus 8 µA), making them suitable for temperature-critical or low-power applications. The MC74HC175ADG is available in Tube packaging, while MC74HC175ADR2G is supplied in Tape & Reel format. Both maintain ROHS3 compliance and MSL 1 rating.

Compatibility Note for MM74HC175M and MM74HC175MX:

The Fairchild MM74HC175M and onsemi MM74HC175MX variants offer 70 MHz clock frequency performance. These parts are functionally compatible but RoHS compliance status is not specified for the MM74HC175M. Both maintain identical package footprint and electrical interface compatibility.

All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard PCB assembly and storage procedures.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SN74HC175D with SN74HC175DR?

A: Yes. The SN74HC175DR is the direct equivalent with identical electrical specifications and 16-SOIC package footprint. The primary difference is product status (active versus discontinued) and packaging format (Cut Tape/Digi-Reel versus standard).

Q: What is the difference between the various manufacturers' 74HC175 parts?

A: All 74HC175 variants share the same base product number, function, and pin configuration. Differences exist in clock frequency (35 MHz to 89 MHz), propagation delay (22ns to 30ns), quiescent current (4 µA to 8 µA), and operating temperature range (-40°C to 85°C, or extended to 125°C). These variations represent performance enhancements rather than functional changes.

Q: Is the 16-SOIC package identical across all substitute parts?

A: Yes. All substitute parts use the 16-SOIC (0.154", 3.90mm Width) package, ensuring identical PCB footprint and pin compatibility. The Nexperia part specifies 16-SO, which is equivalent to 16-SOIC.

Q: Which substitute part should I choose for high-temperature applications?

A: For operating temperatures above 85°C, select either the 74HC175D,653 (Nexperia, -40°C to 125°C) or the MC74HC175ADG/MC74HC175ADR2G (onsemi, -55°C to 125°C). The onsemi variants also provide the lowest quiescent current at 4 µA.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts with specified RoHS status are ROHS3 compliant. The Fairchild MM74HC175M does not specify RoHS compliance status in the provided data.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 rating indicates unlimited shelf life without moisture baking requirements, providing maximum flexibility in storage and handling procedures compared to higher MSL ratings.

Q: Can I use MC74HC175ADG (Tube packaging) in automated assembly?

A: The MC74HC175ADG is supplied in Tube packaging, which requires manual handling or special feeding equipment for automated assembly. For automated pick-and-place assembly, select parts supplied in Tape & Reel format such as SN74HC175DR, MM74HC175MX, 74HC175D,653, or MC74HC175ADR2G.