NJM360M Equivalent & Substitute Parts Reference

Part Overview

The NJM360M is a differential comparator IC manufactured by Nisshinbo Micro Devices Inc., designed for linear signal comparison applications. This device features complementary TTL output and operates across a ±4.5V to 6.5V supply voltage range. The NJM360M is classified as an obsolete product, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while accommodating differences in packaging, element count, and operating specifications.

Substiute Parts

NJM360M

Nisshinbo Micro Devices Inc.In Stock: 1932NJM360M Datasheet

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LM361MX/NOPB

Texas InstrumentsIn Stock: 10112LM361MX/NOPB Datasheet

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LM361N/NOPB

Texas InstrumentsIn Stock: 24158LM361N/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the NJM360M is determined by the following critical parameters:

Functional Compatibility Criteria:

• Differential comparator topology with complementary TTL output
• Input offset voltage specification of 5mV maximum
• Supply voltage range compatibility (NJM360M operates at ±4.5V ~ 6.5V)

Substitution Logic: The LM361MX/NOPB and LM361N/NOPB are identified as functional equivalents based on matching differential comparator architecture with complementary TTL output and identical input offset voltage specification (5mV @ 5V). Both substitute parts operate across an extended supply voltage range (±5V ~ 15V), which encompasses the NJM360M operating window.

Key Differentiators Between Substitutes:

• LM361MX/NOPB: Single element, 14-SOIC surface mount package, active product status
• LM361N/NOPB: Dual element (2 comparators), 14-DIP through-hole package, active product status

Package and Mounting Considerations: The NJM360M uses an 8-SOIC surface mount package. The LM361MX/NOPB maintains surface mount technology in a 14-SOIC package. The LM361N/NOPB requires through-hole mounting in a 14-DIP package, necessitating PCB redesign for implementation.

Parameter Comparison

Engineering Selection Recommendations

For Surface Mount Applications (Preferred): The LM361MX/NOPB is the primary substitute for the NJM360M in new designs. This part maintains surface mount technology compatibility, operates across an extended supply voltage range that encompasses the NJM360M specification, and carries active product status with ROHS3 compliance. The LM361MX/NOPB features improved moisture sensitivity rating (MSL 1 vs. MSL 2) and lower input bias current (10µA vs. 20µA). Package redesign is required due to the transition from 8-SOIC to 14-SOIC form factor.

For Through-Hole Applications: The LM361N/NOPB provides functional equivalence with dual comparator integration in a 14-DIP through-hole package. This substitute is suitable for legacy through-hole PCB designs or applications requiring dual comparator functionality. The LM361N/NOPB maintains identical electrical specifications to the LM361MX/NOPB variant and carries active product status with ROHS3 compliance.

Operating Temperature Consideration: Both substitute parts operate across 0°C ~ 70°C, which is narrower than the NJM360M range of -40°C ~ 85°C. Applications requiring extended temperature operation below 0°C or above 70°C require evaluation of alternative comparator solutions.

Compliance and Availability: Both LM361 variants are active products from Texas Instruments with ROHS3 compliance and REACH unaffected status. Inventory availability is significantly higher for both substitutes compared to the obsolete NJM360M.

Frequently Asked Questions (FAQ)

Q: Can the LM361MX/NOPB directly replace the NJM360M without PCB modification?

A: No. While the LM361MX/NOPB provides functional equivalence, the package transition from 8-SOIC to 14-SOIC requires PCB layout redesign. Pin assignments differ between the two packages, necessitating schematic and layout updates.

Q: What is the primary difference between the LM361MX/NOPB and LM361N/NOPB?

A: The LM361MX/NOPB is a single-element comparator in a 14-SOIC surface mount package. The LM361N/NOPB contains two comparator elements in a 14-DIP through-hole package. Both share identical electrical specifications for each comparator element.

Q: Are the supply voltage ranges compatible between the NJM360M and its substitutes?

A: The NJM360M operates at ±4.5V ~ 6.5V. Both LM361 variants operate at ±5V ~ 15V. The LM361 range encompasses the NJM360M specification, ensuring compatibility in applications operating within the NJM360M voltage window. Applications requiring operation below ±5V require verification against LM361 datasheet minimum specifications.

Q: What is the impact of the operating temperature range difference?

A: The NJM360M operates from -40°C ~ 85°C, while both LM361 variants operate from 0°C ~ 70°C. Applications requiring operation below 0°C or above 70°C cannot use the LM361 substitutes and require alternative comparator selection.

Q: How do the input bias current specifications compare?

A: The NJM360M specifies 20µA maximum input bias current. Both LM361 variants specify 10µA maximum at 5V, representing a 50% reduction. This improvement reduces loading on signal sources and may improve circuit performance in high-impedance applications.

Q: What are the moisture sensitivity implications?

A: The NJM360M carries MSL 2 (1 Year) rating. Both LM361 variants carry MSL 1 (Unlimited) rating, indicating superior moisture resistance and extended shelf life without baking requirements.

Q: Is the quiescent current specification compatible?

A: The NJM360M specifies 32mA maximum quiescent current. The LM361 variants specify 5mA, 10mA, or 20mA options, all lower than the NJM360M specification. This represents improved power efficiency in the substitute parts.

Q: Can the LM361N/NOPB be used in applications designed for the NJM360M?

A: The LM361N/NOPB provides functional equivalence for the comparator function but requires through-hole PCB redesign. The dual-element configuration allows integration of two comparators in a single package, which may reduce component count in applications requiring multiple comparators.