MM74HC175M Equivalent & Substitute Parts

Part Overview

The MM74HC175M 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, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part operates across a 2V to 6V supply range with complementary output configuration, making it suitable for digital logic applications requiring synchronous data storage and transfer.

Key Parameters

Parameter	Value
Manufacturer Part Number	MM74HC175M
Manufacturer	onsemi
Series	74HC
Type	D-Type Flip Flop
Number of Elements	1
Number of Bits per Element	4
Output Type	Complementary
Trigger Type	Positive Edge
Function	Master Reset
Package / Case	16-SOIC (0.154", 3.90mm Width)
Voltage - Supply	2V ~ 6V
Clock Frequency	70 MHz
Max Propagation Delay @ 6V, 50pF	26ns
Current - Output High, Low	5.2mA, 5.2mA
Current - Quiescent (Iq)	8 µA
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the MM74HC175M is determined by strict alignment across the following critical parameters:

Core Functional Parameters (Must Match):

Series: 74HC
Type: D-Type Flip Flop
Number of Elements: 1
Number of Bits per Element: 4
Output Type: Complementary
Trigger Type: Positive Edge
Function: Master Reset
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Voltage - Supply: 2V ~ 6V

Electrical Performance Parameters (Allowable Variance):

Clock Frequency: 35 MHz minimum (MM74HC175M operates at 70 MHz)
Max Propagation Delay @ 6V, 50pF: up to 30ns (MM74HC175M at 26ns)
Current - Output High, Low: 5.2mA (fixed across all variants)
Current - Quiescent (Iq): 4 µA to 8 µA range
Input Capacitance: 3 pF to 10 pF range
Operating Temperature: -40°C minimum to 85°C maximum (extended ranges acceptable)

Compliance Parameters:

Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant preferred

Substitute parts meeting all core functional parameters and electrical performance allowances are classified as direct equivalents. Parts with identical specifications across all parameters are classified as direct replacements.

Parameter Comparison

Part Number	Manufacturer	Clock Frequency	Max Propagation Delay @ 6V, 50pF	Current - Iq	Input Capacitance	Operating Temperature	Packaging	Product Status	RoHS Status
MM74HC175M	onsemi	70 MHz	26ns	8 µA	5 pF	-40°C ~ 85°C	Tube	Obsolete	ROHS3 Compliant
MC74HC175ADG	onsemi	35 MHz	22ns	4 µA	10 pF	-55°C ~ 125°C	Tube	Active	ROHS3 Compliant
MC74HC175ADR2G	onsemi	35 MHz	22ns	4 µA	10 pF	-55°C ~ 125°C	Tape & Reel (TR)	Active	ROHS3 Compliant
SN74HC175D	Texas Instruments	60 MHz	26ns	8 µA	3 pF	-40°C ~ 85°C	Tube	Discontinued at DiGi Electronics	ROHS3 Compliant
SN74HC175DR	Texas Instruments	60 MHz	26ns	8 µA	3 pF	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	Active	ROHS3 Compliant
SN74HC175DT	Texas Instruments	60 MHz	26ns	8 µA	3 pF	-40°C ~ 85°C	Tube	Discontinued at DiGi Electronics	ROHS3 Compliant
74HC175D,653	Nexperia USA Inc.	89 MHz	30ns	8 µA	4.6 pF	-40°C ~ 125°C	Tape & Reel (TR)	Active	ROHS3 Compliant
CD74HC175M	Harris Corporation	35 MHz	30ns	8 µA	10 pF	-55°C ~ 125°C	Tube	Obsolete	RoHS non-compliant
CD74HC175M96	Texas Instruments	35 MHz	30ns	8 µA	10 pF	-55°C ~ 125°C	Tape & Reel (TR)	Active	ROHS3 Compliant
SN74HC175NSR	Texas Instruments	60 MHz	26ns	8 µA	3 pF	-40°C ~ 85°C	Tape & Reel (TR)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Preferred Primary Substitutes (Active Status, ROHS3 Compliant):

SN74HC175DR and SN74HC175NSR from Texas Instruments are the recommended primary substitutes. Both parts maintain identical electrical specifications to the MM74HC175M across clock frequency (60 MHz), propagation delay (26ns), quiescent current (8 µA), and operating temperature range (-40°C ~ 85°C). SN74HC175DR is available in Cut Tape & Digi-Reel packaging with 7548 units in stock, while SN74HC175NSR is available in Tape & Reel packaging with 3300 units in stock. Both carry Active product status and ROHS3 compliance certification.

Secondary Substitutes (Active Status, Extended Temperature Range):

MC74HC175ADG and MC74HC175ADR2G from onsemi provide extended operating temperature range (-55°C ~ 125°C) with improved quiescent current performance (4 µA). These parts operate at reduced clock frequency (35 MHz) and faster propagation delay (22ns @ 6V, 50pF). MC74HC175ADG is available in Tube packaging with 1719 units in stock, while MC74HC175ADR2G is available in Tape & Reel packaging with 1150 units in stock. Both carry Active product status and ROHS3 compliance.

Alternative Substitute (Active Status, Enhanced Performance):

74HC175D,653 from Nexperia USA Inc. offers the highest clock frequency (89 MHz) among available substitutes with extended operating temperature range (-40°C ~ 125°C). Propagation delay is 30ns @ 6V, 50pF. This part is available in Tape & Reel packaging with 9791 units in stock and carries Active product status with ROHS3 compliance.

Avoid:

CD74HC175M from Harris Corporation is Obsolete and RoHS non-compliant. SN74HC175D and SN74HC175DT from Texas Instruments are Discontinued at DiGi Electronics and should not be selected for new designs.

Frequently Asked Questions (FAQ)

Q: Can I directly replace MM74HC175M with SN74HC175DR?

A: Yes. SN74HC175DR is a direct functional equivalent meeting all core specifications: 74HC series, D-Type flip-flop, 1 element, 4-bit configuration, complementary output, positive edge trigger, master reset function, and 16-SOIC package. Electrical parameters align within allowable tolerances. The part is Active status with ROHS3 compliance.

Q: What is the difference between MC74HC175ADG and MC74HC175ADR2G?

A: Both parts are electrically identical with identical specifications. The primary difference is packaging: MC74HC175ADG is supplied in Tube format, while MC74HC175ADR2G is supplied in Tape & Reel (TR) format. Selection depends on procurement and assembly requirements.

Q: Why does 74HC175D,653 have higher clock frequency than the original MM74HC175M?

A: 74HC175D,653 from Nexperia operates at 89 MHz versus MM74HC175M at 70 MHz. Higher clock frequency indicates improved performance capability and does not create incompatibility. This part remains functionally equivalent and can be used as a direct substitute.

Q: Is the extended temperature range of MC74HC175ADG a concern for replacement?

A: No. Extended operating temperature range (-55°C ~ 125°C) versus the original (-40°C ~ 85°C) provides additional operational margin. This is a performance enhancement, not a limitation. The part remains fully compatible for applications within the original temperature specification.

Q: Can I use CD74HC175M as a substitute?

A: CD74HC175M is not recommended. This part is Obsolete and carries RoHS non-compliant status, creating regulatory and supply chain risk. Active, ROHS3-compliant alternatives are available.

Q: What packaging options are available for substitutes?

A: Substitutes are available in three packaging formats: Tube (MC74HC175ADG, SN74HC175D, SN74HC175DT, CD74HC175M), Cut Tape & Digi-Reel (SN74HC175DR), and Tape & Reel (MC74HC175ADR2G, 74HC175D,653, CD74HC175M96, SN74HC175NSR). Selection depends on assembly process requirements and procurement volume.

Q: Are all recommended substitutes ROHS3 compliant?

A: All recommended primary and secondary substitutes carry ROHS3 compliance certification. CD74HC175M is the only substitute with RoHS non-compliant status and should be avoided.

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