LM361MX Equivalent & Substitute Parts

Part Overview

The LM361MX is a differential comparator IC manufactured by Texas Instruments, housed in a 14-SOIC surface mount package. This device features complementary TTL output and is designed for precision voltage comparison applications requiring dual supply operation. The LM361MX is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

LM361MX

Texas InstrumentsIn Stock: 1702LM361MX Datasheet

Current PartRFQ

LM361MX/NOPB

Texas InstrumentsIn Stock: 10112LM361MX/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM361MX is determined by strict equivalence across the following critical parameters:

• Package / Case: 14-SOIC surface mount form factor
• Voltage Supply Range: ±5V ~ 15V dual supply operation
• Output Type: Complementary TTL logic levels
• Propagation Delay: 20ns maximum
• Input Offset Voltage: 5mV @ 5V
• Input Bias Current: 10µA @ 5V
• Operating Temperature Range: 0°C ~ 70°C

The LM361MX/NOPB is identified as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and compliance certification, with the substitute part remaining in active production.

Parameter Comparison

Engineering Selection Recommendations

The LM361MX/NOPB serves as the direct functional equivalent for the obsolete LM361MX. Selection between these parts is determined by compliance and availability requirements:

For new designs and systems requiring regulatory compliance, the LM361MX/NOPB is the appropriate selection due to active product status and ROHS3 compliance certification. This part maintains identical electrical performance and package configuration while offering improved supply chain availability and regulatory alignment.

For legacy system maintenance where RoHS non-compliance is acceptable, the LM361MX remains available in limited inventory. However, the LM361MX/NOPB is preferred due to active manufacturing status and superior compliance posture.

Frequently Asked Questions (FAQ)

Q: Can the LM361MX/NOPB directly replace the LM361MX in existing designs?

A: Yes. The LM361MX/NOPB provides identical electrical specifications, propagation delay, input offset voltage, bias current, and supply voltage range. The 14-SOIC package footprint is identical, enabling direct PCB-level substitution without design modification.

Q: What is the significance of the /NOPB suffix?

A: The /NOPB designation indicates lead-free, RoHS3 compliant packaging. This reflects manufacturing process compliance with environmental regulations while maintaining electrical equivalence to the base LM361MX part number.

Q: Are there differences in element count between these parts?

A: The LM361MX contains 2 differential comparator elements, while the LM361MX/NOPB contains 1 element. This distinction must be evaluated against circuit requirements. If dual comparator functionality is required, alternative parts with matching element count should be considered.

Q: What packaging formats are available for the LM361MX/NOPB?

A: The LM361MX/NOPB is supplied in Cut Tape (CT) and Digi-Reel® formats, providing flexibility for both manual assembly and automated pick-and-place operations.

Q: Is the LM361MX still in production?

A: No. The LM361MX is classified as obsolete. The LM361MX/NOPB is the active production equivalent and is the recommended selection for new procurement.