MM74HC165N Equivalent & Substitute Parts

Part Overview

The MM74HC165N is an 8-bit parallel-in/serial-out shift register manufactured by onsemi, housed in a 16-DIP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The shift register performs parallel or serial to serial conversion functions across supply voltages of 2V to 6V, with an operating temperature range of -40°C to 85°C. Direct equivalents and parametric substitutes are available from active product lines, ensuring design continuity and component availability.

Substiute Parts

MM74HC165N

onsemiIn Stock: 2736MM74HC165N Datasheet

Current PartRFQ

CD74HC166E

Texas InstrumentsIn Stock: 2015CD74HC166E Datasheet

DirectRFQ

SN74HC165N

Texas InstrumentsIn Stock: 12549SN74HC165N Datasheet

DirectRFQ

CD74HC165E

Texas InstrumentsIn Stock: 1363CD74HC165E Datasheet

SimilarRFQ

TC74HC165AP(F)

Toshiba Semiconductor and StorageIn Stock: 1111TC74HC165AP(F) Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MM74HC165N is determined by the following criteria:

Direct Manufacturer Equivalents maintain identical base product numbers (74HC165 or 74HC166), matching package specifications (16-DIP), supply voltage range (2V ~ 6V), and functional classification (shift register, 8-bit, parallel or serial to serial). These parts are sourced from active product lines with current manufacturing status.

Similar Parts share the same base product number (74HC165), package type (16-DIP), supply voltage (2V ~ 6V), and functional parameters, with variations in output type or extended temperature ratings that remain within acceptable operating margins.

Parametric Equivalents match all critical electrical parameters—supply voltage, bit width, function, and package—while originating from alternative manufacturers. These parts satisfy functional requirements despite differences in product status or temperature specifications.

Parameter Comparison

Engineering Selection Recommendations

SN74HC165N is the primary direct equivalent, offering identical electrical parameters to the MM74HC165N with extended operating temperature range (-40°C ~ 125°C) and active product status from Texas Instruments. ROHS3 compliance and current manufacturing support make this the preferred choice for new designs and ongoing procurement.

CD74HC165E provides an alternative from Texas Instruments with expanded temperature specifications (-55°C ~ 125°C) and ROHS3 compliance. This part is suitable for applications requiring extended temperature operation while maintaining complementary output characteristics.

TC74HC165AP(F) from Toshiba Semiconductor and Storage matches the original MM74HC165N temperature range (-40°C ~ 85°C) and output type, with active product status and RoHS compliance. This option is appropriate for designs with specific temperature constraints matching the obsolete part.

CD74HC166E functions as a parametric equivalent with push-pull output type instead of complementary. Selection of this part requires verification that push-pull output characteristics are compatible with the application circuit, though supply voltage, bit width, and package remain identical.

Frequently Asked Questions (FAQ)

Q: Can SN74HC165N directly replace MM74HC165N in existing designs? A: Yes. SN74HC165N maintains identical supply voltage (2V ~ 6V), 8-bit configuration, parallel or serial to serial function, and 16-DIP package. The extended operating temperature range (-40°C ~ 125°C versus -40°C ~ 85°C) and complementary output type ensure functional compatibility.

Q: What is the difference between CD74HC165E and CD74HC166E? A: Both parts share identical package, supply voltage, and temperature specifications. The primary difference is output type: CD74HC165E provides complementary output, while CD74HC166E provides push-pull output. Selection depends on circuit requirements for output drive characteristics.

Q: Is TC74HC165AP(F) suitable for applications requiring extended temperature operation? A: TC74HC165AP(F) operates within -40°C ~ 85°C, matching the original MM74HC165N specification. For applications requiring operation below -40°C or above 85°C, CD74HC165E (-55°C ~ 125°C) or SN74HC165N (-40°C ~ 125°C) are more appropriate.

Q: Are all substitute parts RoHS compliant? A: SN74HC165N, CD74HC165E, and CD74HC166E are ROHS3 compliant. TC74HC165AP(F) is RoHS compliant. All parts meet current environmental compliance standards.

Q: Does package type remain consistent across all substitute options? A: Yes. All substitute parts are housed in 16-DIP (0.300", 7.62mm) through-hole packages, ensuring mechanical and electrical compatibility with existing PCB designs.