MM74HC165SJ 8-Bit Parallel-In Serial-Out Shift Register Equivalent & Substitute Parts

Part Overview

The MM74HC165SJ is an 8-bit parallel-in serial-out shift register manufactured by onsemi in 16-SOP surface mount packaging. This logic component functions to convert parallel data inputs to serial output format, operating across a 2V to 6V supply voltage range with -40°C to 85°C temperature specifications. The part is classified as obsolete, making equivalent and substitute components necessary for ongoing design support and procurement continuity. Substitute parts maintain identical functional specifications while offering improved availability and active product status from alternative manufacturers.

Substiute Parts

MM74HC165SJ

onsemiIn Stock: 2221MM74HC165SJ Datasheet

Current PartRFQ

SN74HC165NSR

Texas InstrumentsIn Stock: 108739SN74HC165NSR Datasheet

DirectRFQ

TC74HC165AF(EL,F)

Toshiba Semiconductor and StorageIn Stock: 1193TC74HC165AF(EL,F) Datasheet

DirectRFQ

74HC165D,653

Nexperia USA Inc.In Stock: 35177474HC165D,653 Datasheet

SimilarRFQ

CD74HC165M

Harris CorporationIn Stock: 1869CD74HC165M Datasheet

SimilarRFQ

CD74HC165M96

Texas InstrumentsIn Stock: 47730CD74HC165M96 Datasheet

SimilarRFQ

CD74HC165MT

Texas InstrumentsIn Stock: 1205CD74HC165MT Datasheet

SimilarRFQ

SN74HC165D

Texas InstrumentsIn Stock: 3004SN74HC165D Datasheet

SimilarRFQ

SN74HC165DR

Texas InstrumentsIn Stock: 5457SN74HC165DR Datasheet

SimilarRFQ

SN74HC165DRG3

Texas InstrumentsIn Stock: 3567SN74HC165DRG3 Datasheet

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SN74HC165DT

Texas InstrumentsIn Stock: 12615SN74HC165DT Datasheet

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SN74HC165QDRQ1

Texas InstrumentsIn Stock: 7732SN74HC165QDRQ1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MM74HC165SJ is determined by strict alignment across the following parameters:

• Logic Type: Shift Register (8-bit configuration)
• Function: Parallel or Serial to Serial conversion
• Output Type: Complementary
• Voltage Supply Range: 2V ~ 6V minimum compatibility
• Operating Temperature: Minimum -40°C to 85°C coverage
• Mounting Type: Surface Mount
• Base Product Number: 74HC165 series
• Moisture Sensitivity Level: MSL 1 (Unlimited)
• Package Compatibility: 16-SOIC footprint with 0.209" width (5.30mm) or equivalent 16-SO/16-SOP variants

Substitute parts are classified as Direct (pin-compatible, identical electrical performance) or Similar (compatible function with extended temperature or package width variations). All substitutes maintain the 74HC165 base product architecture and are qualified for equivalent circuit operation.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitute (Highest Compatibility): SN74HC165NSR from Texas Instruments is the primary direct substitute. It maintains the 0.209" (5.30mm) package width matching the MM74HC165SJ footprint, extends operating temperature to -40°C ~ 125°C, holds Active product status, and carries ROHS3 compliance certification. This part provides immediate drop-in replacement capability with enhanced temperature performance.

Active Product Alternatives: TC74HC165AF(EL,F) from Toshiba Semiconductor and Storage matches the original 0.209" (5.30mm) package width and operating temperature range (-40°C ~ 85°C), with Active status and RoHS compliance. This option preserves thermal specifications while offering current manufacturing availability.

Extended Temperature Performance: SN74HC165DR and SN74HC165DRG3 from Texas Instruments provide -40°C ~ 125°C operating range with Active product status and ROHS3 compliance. These parts accommodate wider temperature applications but use the narrower 0.154" (3.90mm) package width, requiring PCB layout verification for footprint compatibility.

Compliance Considerations: All recommended active substitutes carry RoHS3 or equivalent compliance certification. Obsolete alternatives (CD74HC165M, MM74HC165SJ) lack current compliance status and should be avoided for new designs. Parts discontinued at DiGi Electronics (SN74HC165D, SN74HC165DT, CD74HC165MT) may have limited long-term availability despite active manufacturer status.

Frequently Asked Questions (FAQ)

Q: Can SN74HC165NSR directly replace MM74HC165SJ without PCB modification? A: Yes. SN74HC165NSR maintains the 16-SOIC package with 0.209" (5.30mm) width, matching the MM74HC165SJ footprint exactly. Pin configuration and electrical performance are equivalent across the 2V ~ 6V supply range and -40°C ~ 85°C operating window.

Q: What is the difference between 0.209" and 0.154" package widths? A: Package width refers to the physical dimension of the 16-SOIC body. The 0.209" width (5.30mm) is the original specification for MM74HC165SJ. The 0.154" width (3.90mm) represents a narrower variant used by some manufacturers. PCB footprints must match the specific width; substituting between widths requires layout verification.

Q: Are parts listed as "Discontinued at DiGi Electronics" still available? A: Discontinuation at a specific distributor does not indicate manufacturer discontinuation. Parts like SN74HC165D and SN74HC165DT may remain available through alternative channels, but procurement should prioritize Active status parts for supply chain reliability.

Q: Does the extended temperature range (-55°C ~ 125°C) of CD74HC165M96 provide additional design margin? A: CD74HC165M96 extends the lower temperature limit to -55°C and upper limit to 125°C compared to the MM74HC165SJ specification of -40°C ~ 85°C. This provides additional margin only if your application requires operation outside the original -40°C ~ 85°C window. For standard applications within the original range, this extended specification offers no functional advantage.

Q: What compliance certifications are required for new designs? A: ROHS3 compliance is the current standard for new component selection. All active substitutes (SN74HC165NSR, TC74HC165AF(EL,F), SN74HC165DR, SN74HC165DRG3) carry ROHS3 or equivalent certification. Obsolete parts (MM74HC165SJ, CD74HC165M) lack current compliance and should not be specified for new designs.

Q: Can I use multiple substitute parts interchangeably in the same design? A: Yes, provided all selected parts meet your specific operating temperature, package width, and compliance requirements. All listed active substitutes maintain identical 8-bit shift register functionality, 2V ~ 6V supply compatibility, and complementary output configuration. Verify PCB footprint compatibility for package width variations before mixing part sources.