MM74HC04SJ Equivalent & Substitute Parts

Part Overview

The MM74HC04SJ is a 6-channel inverter logic IC manufactured by onsemi in a 14-SOP surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The MM74HC04SJ operates across a 2V to 6V supply voltage range and is suitable for general-purpose logic inversion applications requiring low quiescent current and standard propagation delay characteristics.

Substiute Parts

MM74HC04SJ

onsemiIn Stock: 7965MM74HC04SJ Datasheet

Current PartRFQ

SN74HC04NSR

Texas InstrumentsIn Stock: 74417SN74HC04NSR Datasheet

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CD74HC04M

Harris CorporationIn Stock: 2224CD74HC04M Datasheet

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CD74HC04M96

Texas InstrumentsIn Stock: 10447CD74HC04M96 Datasheet

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CD74HC04MT

Texas InstrumentsIn Stock: 1250CD74HC04MT Datasheet

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SN74HC04D

Texas InstrumentsIn Stock: 4436SN74HC04D Datasheet

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SN74HC04DR

Texas InstrumentsIn Stock: 25451SN74HC04DR Datasheet

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SN74HC04DT

Texas InstrumentsIn Stock: 4818SN74HC04DT Datasheet

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TC74HC04AF(EL,F)

Toshiba Semiconductor and StorageIn Stock: 1024TC74HC04AF(EL,F) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MM74HC04SJ is determined by strict equivalence across the following critical parameters:

• Logic Type: Inverter with 6 channels, 1 input per channel
• Voltage Supply Range: 2V ~ 6V
• Current Characteristics: Quiescent current ≤ 2 µA; Output current 5.2mA
• Input Logic Levels: Low 0.5V ~ 1.8V; High 1.5V ~ 4.2V
• Propagation Delay: Maximum 16ns @ 6V, 50pF load
• Operating Temperature: Minimum -40°C ~ 85°C
• Mounting: Surface mount configuration
• Package Footprint: 14-pin SOIC with compatible pin spacing

All substitute parts listed maintain these electrical and mechanical specifications, ensuring functional interchangeability within the 74HC04 logic family. Package width variations (0.154" vs 0.209") are noted where applicable, as they affect PCB layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74HC04NSR

The SN74HC04NSR from Texas Instruments is the optimal direct substitute for the MM74HC04SJ. Both parts share identical electrical specifications (2V ~ 6V supply, 2 µA quiescent current, 16ns propagation delay) and package dimensions (14-SOIC 0.209" width). The SN74HC04NSR maintains active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Secondary Recommendation: TC74HC04AF(EL,F)

The TC74HC04AF(EL,F) from Toshiba provides superior performance characteristics with lower quiescent current (1 µA) and faster propagation delay (13ns). It maintains the same package footprint (14-SOIC 0.209" width) as the MM74HC04SJ and is actively produced with RoHS compliance. This part is suitable for applications where reduced power consumption is beneficial.

Alternative Recommendations: SN74HC04DR

The SN74HC04DR from Texas Instruments offers active product status with ROHS3 compliance. While it uses a narrower package variant (14-SOIC 0.154" width), it maintains identical electrical specifications to the MM74HC04SJ. PCB layout modification is required due to package width difference.

Not Recommended: CD74HC04M, CD74HC04MT, SN74HC04D, SN74HC04DT

These parts are either obsolete or discontinued at DiGi Electronics. CD74HC04M carries RoHS non-compliance status. While electrically compatible, these options do not provide the supply chain stability or regulatory compliance of active alternatives.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HC04NSR as a direct replacement for MM74HC04SJ without PCB modifications?

A: Yes. Both parts use the 14-SOIC package with 0.209" width and identical pin configurations. No PCB layout changes are required.

Q: What is the difference between the 0.154" and 0.209" package widths?

A: These represent different SOIC package body widths. The 0.209" width (narrow body) and 0.154" width (standard body) have different PCB footprints. Parts with different widths require separate PCB designs or layout adjustments.

Q: Is TC74HC04AF(EL,F) compatible with existing MM74HC04SJ designs?

A: Yes, electrically and functionally. The TC74HC04AF(EL,F) maintains the same 14-SOIC 0.209" package footprint and all critical electrical parameters. It offers improved performance with lower quiescent current and faster propagation delay.

Q: Why is the MM74HC04SJ obsolete?

A: The MM74HC04SJ is classified as obsolete by onsemi. Active alternatives from Texas Instruments and Toshiba provide equivalent or superior functionality with ongoing production support.

Q: What does ROHS3 compliance mean?

A: ROHS3 compliance indicates the part meets the Restriction of Hazardous Substances Directive 3, restricting specific hazardous materials in electrical and electronic equipment. This is a regulatory requirement for many markets.

Q: Can I substitute parts with different operating temperature ranges?

A: Only if your application requirements fall within the narrower range. The MM74HC04SJ operates -40°C ~ 85°C. Parts rated -55°C ~ 125°C are suitable for the original temperature range and beyond. Parts with narrower ranges must match or exceed your application requirements.

Q: What is the significance of quiescent current differences between parts?

A: Quiescent current affects power consumption in standby or idle states. The MM74HC04SJ and most substitutes draw 2 µA maximum. The TC74HC04AF(EL,F) draws only 1 µA, reducing power consumption by 50% in low-activity applications.

Q: Are there any functional differences between these 74HC04 variants?

A: All listed parts perform identical logic inversion functions with 6 channels. Differences are limited to propagation delay (13ns to 16ns), quiescent current (1 µA to 2 µA), operating temperature range, and package dimensions. These do not affect functional compatibility in standard applications.