MM74HC165MX Equivalent & Substitute Parts

Part Overview

The MM74HC165MX is an 8-bit parallel-in serial-out (PISO) shift register manufactured by onsemi in 16-SOIC surface mount packaging. This logic component functions as a parallel or serial to serial converter with complementary output type. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	MM74HC165MX
Manufacturer	onsemi
Logic Type	Shift Register
Number of Bits per Element	8
Function	Parallel or Serial to Serial
Output Type	Complementary
Voltage - Supply	2V ~ 6V
Operating Temperature	-40°C ~ 85°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MM74HC165MX is determined by strict equivalence across the following critical parameters:

Logic Type: Shift Register (8-bit PISO configuration)
Output Type: Complementary
Function: Parallel or Serial to Serial conversion
Voltage Supply Range: 2V ~ 6V minimum compatibility
Package / Case: 16-SOIC form factor
Mounting Type: Surface Mount
Moisture Sensitivity Level: MSL 1 or better

Substitute parts are grouped into two categories: direct functional equivalents from alternative manufacturers (Texas Instruments, Nexperia) and similar onsemi variants with enhanced specifications. All listed substitutes maintain identical electrical function and pinout compatibility within the 16-SOIC package.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Bits per Element	Voltage Supply	Operating Temp	Package	Product Status	RoHS Status
MM74HC165MX	onsemi	Shift Register	8	2V ~ 6V	-40°C ~ 85°C	16-SOIC	Obsolete	Not specified
MC74HC165ADG	onsemi	Shift Register	8	2V ~ 6V	-55°C ~ 125°C	16-SOIC	Active	ROHS3 Compliant
MC74HC165ADR2G	onsemi	Shift Register	8	2V ~ 6V	-55°C ~ 125°C	16-SOIC	Active	ROHS3 Compliant
SN74HC165D	Texas Instruments	Shift Register	8	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Discontinued at DiGi Electronics	ROHS3 Compliant
SN74HC165DR	Texas Instruments	Shift Register	8	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Active	ROHS3 Compliant
SN74HC165DRG3	Texas Instruments	Shift Register	8	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Active	ROHS3 Compliant
SN74HC165DT	Texas Instruments	Shift Register	8	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Discontinued at DiGi Electronics	ROHS3 Compliant
SN74HC165QDRQ1	Texas Instruments	Shift Register	8	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Active	ROHS3 Compliant
74HC165D,653	Nexperia USA Inc.	Shift Register	8	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Active	ROHS3 Compliant
74HC165D-Q100,118	Nexperia USA Inc.	Shift Register	8	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Active	ROHS3 Compliant
CD74HC165M	Harris Corporation	Shift Register	8	2V ~ 6V	-55°C ~ 125°C	16-SOIC	Obsolete	RoHS non-compliant

Engineering Selection Recommendations

For new designs and ongoing procurement, the following substitutes are recommended based on product status and compliance:

Primary Recommendations (Active Status, ROHS3 Compliant):

MC74HC165ADG or MC74HC165ADR2G (onsemi): Direct onsemi alternatives with extended operating temperature range (-55°C ~ 125°C) and active product status. Both maintain full electrical equivalence to MM74HC165MX with superior RoHS3 compliance.
SN74HC165DR or SN74HC165DRG3 (Texas Instruments): Active Texas Instruments equivalents with identical 8-bit PISO functionality and ROHS3 compliance. SN74HC165DR is available in Cut Tape & Digi-Reel packaging; SN74HC165DRG3 is available in Tape & Reel.
74HC165D,653 or 74HC165D-Q100,118 (Nexperia USA Inc.): Active Nexperia alternatives with ROHS3 compliance. The 74HC165D-Q100,118 variant includes AEC-Q100 automotive qualification.

Secondary Recommendations (Discontinued or Obsolete Status):

SN74HC165D or SN74HC165DT (Texas Instruments): Discontinued at DiGi Electronics but functionally equivalent. Use only if inventory is available and long-term supply is not required.
CD74HC165M (Harris Corporation): Obsolete with RoHS non-compliance. Not recommended for new designs.

Automotive Applications:

SN74HC165QDRQ1 (Texas Instruments): AEC-Q100 qualified variant for automotive-grade applications.
74HC165D-Q100,118 (Nexperia USA Inc.): AEC-Q100 qualified variant for automotive-grade applications.

Frequently Asked Questions (FAQ)

Q: Can I directly replace MM74HC165MX with any of the listed substitutes? A: Yes. All listed substitutes maintain identical pinout, electrical function, and 16-SOIC package compatibility. The MM74HC165MX, MC74HC165ADG, MC74HC165ADR2G, SN74HC165DR, SN74HC165DRG3, 74HC165D,653, and 74HC165D-Q100,118 are direct functional equivalents with no circuit modifications required.

Q: What is the difference between MC74HC165ADG and MC74HC165ADR2G? A: Both are onsemi 74HC165 equivalents with identical electrical specifications. The primary difference is packaging: MC74HC165ADG is supplied in Tube packaging, while MC74HC165ADR2G is supplied in Cut Tape & Digi-Reel format. Select based on your procurement and assembly requirements.

Q: Why should I avoid CD74HC165M? A: CD74HC165M is obsolete and RoHS non-compliant. While functionally equivalent, it presents supply chain risk and regulatory compliance issues for new designs. Use active, ROHS3-compliant alternatives instead.

Q: Are there temperature range differences I should consider? A: Yes. The MM74HC165MX operates at -40°C ~ 85°C. Most substitutes (SN74HC165DR, SN74HC165DRG3, 74HC165D,653, 74HC165D-Q100,118) extend to -40°C ~ 125°C, providing wider operating range. onsemi variants (MC74HC165ADG, MC74HC165ADR2G) and CD74HC165M extend to -55°C ~ 125°C. Select based on your application's thermal requirements.

Q: Which substitute should I choose for automotive applications? A: For automotive-grade designs, select SN74HC165QDRQ1 (Texas Instruments) or 74HC165D-Q100,118 (Nexperia USA Inc.), both AEC-Q100 qualified. These are specifically validated for automotive environments.

Q: Is the 16-SOIC package identical across all substitutes? A: Yes. All substitutes use 16-SOIC (0.154", 3.90mm Width) surface mount packaging with identical pinout and mechanical dimensions. No PCB layout modifications are required.

Q: What is the MSL rating for substitute parts? A: All listed substitutes maintain MSL 1 (Unlimited) moisture sensitivity level, matching the MM74HC165MX specification. No special moisture handling is required during storage or assembly.

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