MM74HC594N Equivalent & Substitute Parts

Part Overview

The MM74HC594N is an 8-bit shift register logic IC manufactured by onsemi, designed for serial-to-parallel data conversion applications. This component features a single 8-bit shift register element with push-pull output configuration and operates across a 2V to 6V supply voltage range. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

MM74HC594N

onsemiIn Stock: 908MM74HC594N Datasheet

Current PartRFQ

SN74HC594N

Texas InstrumentsIn Stock: 4137SN74HC594N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MM74HC594N is determined by strict alignment with the following critical parameters:

• Logic Function: Shift register with 1 element, 8 bits per element, serial-to-parallel conversion capability
• Electrical Characteristics: Push-pull output configuration, 2V to 6V supply voltage range, -40°C to 85°C operating temperature
• Physical Form Factor: 16-DIP package with 0.300" (7.62mm) pitch, through-hole mounting
• Series Classification: 74HC logic family compatibility

The SN74HC594N from Texas Instruments meets all substitution criteria, sharing identical functional specifications, electrical parameters, and physical packaging with the MM74HC594N.

Parameter Comparison

Engineering Selection Recommendations

The SN74HC594N is a direct functional equivalent to the MM74HC594N. Both components share identical electrical specifications, logic functionality, and physical packaging. The primary distinction is product lifecycle status: the MM74HC594N is obsolete while the SN74HC594N maintains active production status with ROHS3 compliance certification. For applications requiring the 74HC594 shift register function in a 16-DIP through-hole package, the SN74HC594N from Texas Instruments provides continuity of supply and regulatory compliance for new designs and legacy system support.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC594N directly replace the MM74HC594N in existing designs?

A: Yes. Both parts are 74HC series 8-bit shift registers with identical pin configurations, electrical specifications, and functional characteristics. Direct substitution is supported without circuit modification.

Q: Are there differences in supply voltage or operating temperature ranges?

A: No. Both the MM74HC594N and SN74HC594N operate across 2V to 6V supply voltage and -40°C to 85°C temperature ranges.

Q: What is the significance of the 16-DIP package specification?

A: The 16-DIP (0.300", 7.62mm) package denotes a dual-in-line through-hole form factor with 16 pins spaced 0.300 inches apart. This physical specification ensures mechanical and electrical compatibility between equivalent parts.

Q: Does the obsolete status of the MM74HC594N affect substitution decisions?

A: The obsolete status indicates the MM74HC594N is no longer in active production. The SN74HC594N, with active production status, ensures long-term availability for replacement and new applications.

Q: Are there compliance differences between the two parts?

A: The SN74HC594N carries ROHS3 compliance certification. Both parts are REACH Unaffected and classified under ECCN EAR99.