MM74C164N Equivalent & Substitute Parts

Part Overview

The MM74C164N is an 8-bit parallel-output shift register 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 wide supply voltage range of 3V to 15V. The MM74C164N is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

MM74C164N

onsemiIn Stock: 2228MM74C164N Datasheet

Current PartRFQ

SN74HC164N

Texas InstrumentsIn Stock: 13674SN74HC164N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MM74C164N is determined by functional equivalence across the following critical parameters:

• Logic Function: Both main and substitute parts must perform serial-to-parallel shift register conversion with identical pin configuration and logic behavior
• Package Compatibility: Physical form factor must be 14-DIP (0.300", 7.62mm) to ensure direct board-level replacement without layout modification
• Output Configuration: Push-pull output type must be maintained for signal integrity and drive capability
• Element and Bit Count: Single element, 8-bit configuration is mandatory for functional equivalence
• Electrical Characteristics: Supply voltage range and operating temperature must support the application requirements

The SN74HC164N from Texas Instruments qualifies as a direct substitute based on these parameters. Both devices share identical logic architecture, pin count, package form factor, and functional behavior as 8-bit serial-to-parallel shift registers with push-pull outputs.

Parameter Comparison

Engineering Selection Recommendations

The SN74HC164N is the appropriate substitute for MM74C164N applications based on the following factors:

Product Status: The MM74C164N is obsolete, while the SN74HC164N maintains active production status, ensuring long-term availability and supply chain continuity.

Compliance: The SN74HC164N is ROHS3 compliant, meeting current environmental and regulatory requirements for new designs and manufacturing operations.

Functional Equivalence: Both devices are pin-compatible 8-bit shift registers with identical logic architecture and package form factor, enabling direct replacement without circuit redesign.

Voltage Consideration: The SN74HC164N operates at 2V to 6V, which is a subset of the MM74C164N's 3V to 15V range. System designs operating within the 2V to 6V window will function identically with the substitute part. Applications requiring operation above 6V will require alternative solutions.

Temperature Performance: The SN74HC164N extends the upper operating temperature limit to 125°C compared to the MM74C164N's 85°C maximum, providing enhanced thermal margin in high-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC164N directly replace the MM74C164N in existing designs?

A: Yes, for applications operating within the 2V to 6V supply voltage range. Both devices share identical pin configuration, package form factor, and logic function. Designs requiring supply voltages above 6V require alternative components.

Q: What is the primary difference between these two shift registers?

A: The primary difference is supply voltage range. The MM74C164N operates from 3V to 15V, while the SN74HC164N operates from 2V to 6V. The SN74HC164N also offers extended temperature operation to 125°C and maintains active production status with ROHS3 compliance.

Q: Are there any pin configuration differences between MM74C164N and SN74HC164N?

A: No. Both devices are 14-pin DIP packages with identical pinout and logic behavior. Direct board-level substitution is possible without modification.

Q: Why is the MM74C164N classified as obsolete?

A: The MM74C164N is an older CMOS logic device. Modern equivalents like the SN74HC164N offer improved performance characteristics, better compliance certifications, and active manufacturing support.

Q: What applications require the extended voltage range of the MM74C164N?

A: Applications operating at supply voltages above 6V, such as 12V or 15V systems, require the MM74C164N or alternative components rated for higher voltage operation. The SN74HC164N is not suitable for these applications.

Q: Is the SN74HC164N available in the same through-hole package?

A: Yes. The SN74HC164N is available in 14-DIP (0.300", 7.62mm) through-hole package, identical to the MM74C164N, enabling direct PCB replacement.