MM74HC597N Equivalent & Substitute Parts

Part Overview

The MM74HC597N is an 8-bit parallel-to-serial shift register manufactured by onsemi in a 16-DIP package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The shift register converts parallel data inputs to serial outputs, functioning as a fundamental logic component in digital systems requiring data serialization.

Substiute Parts

MM74HC597N

onsemiIn Stock: 1011MM74HC597N Datasheet

Current PartRFQ

CD74HC597E

Texas InstrumentsIn Stock: 5041CD74HC597E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MM74HC597N is determined by the following critical parameters:

• Logic Type & Function: Must be a shift register with parallel-to-serial or parallel/serial-to-serial capability
• Bit Configuration: 8-bit, single element architecture
• Output Characteristics: Push-pull output type
• Supply Voltage Range: 2V to 6V compatibility
• Package Compatibility: 16-DIP (0.300", 7.62mm) through-hole mounting
• Series Alignment: 74HC logic family

The CD74HC597E from Texas Instruments meets all substitution criteria within these parameters.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC597E is a direct functional equivalent to the MM74HC597N. Both components share identical supply voltage ranges, package geometry, and core shift register architecture. The CD74HC597E offers extended operating temperature range (-55°C to 125°C versus -40°C to 85°C) and maintains active product status with ROHS3 compliance, providing superior long-term availability and regulatory alignment compared to the obsolete MM74HC597N.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC597E replace the MM74HC597N in existing designs? A: Yes. Both components operate within the same 2V to 6V supply voltage range, use identical 16-DIP packaging, and provide equivalent 8-bit parallel-to-serial shift register functionality with push-pull outputs.

Q: Are there functional differences between these parts? A: The CD74HC597E supports parallel or serial-to-serial operation, while the MM74HC597N is specified for parallel-to-serial operation. This represents expanded functionality in the substitute part.

Q: What is the significance of the extended temperature range in the CD74HC597E? A: The CD74HC597E operates from -55°C to 125°C compared to the MM74HC597N range of -40°C to 85°C. This extended range accommodates applications requiring operation in more extreme thermal environments.

Q: Does package compatibility require any PCB modifications? A: No. Both parts use 16-DIP (0.300", 7.62mm) through-hole packaging, ensuring direct pin-compatible installation without PCB layout changes.

Q: What compliance advantages does the CD74HC597E provide? A: The CD74HC597E carries ROHS3 compliance certification and maintains active product status, ensuring continued availability and regulatory compliance for new designs and long-term production runs.