LM2907MX Frequency to Voltage Converter - Equivalent & Substitute Parts

Part Overview

The LM2907MX is a Frequency to Voltage Converter IC designed for 10 kHz operation with ±0.3% linearity in a 14-SOIC surface mount package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The LM2907MX/NOPB variant provides an active alternative with identical electrical and mechanical specifications.

Substiute Parts

LM2907MX

Texas InstrumentsIn Stock: 1545LM2907MX Datasheet

Current PartRFQ

LM2907MX/NOPB

National SemiconductorIn Stock: 2715LM2907MX/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2907MX is determined by strict equivalence across the following parameters:

• Frequency - Max: 10 kHz
• Linearity: ±0.3%
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Type: Frequency to Voltage

The LM2907MX/NOPB meets all substitution criteria as a direct equivalent. Both parts share identical electrical performance specifications and mechanical packaging requirements. The primary distinction is product status: the original LM2907MX is obsolete, while the LM2907MX/NOPB variant maintains active production status.

Parameter Comparison

Engineering Selection Recommendations

The LM2907MX/NOPB is a direct functional equivalent suitable for applications currently specified with the LM2907MX. Selection between these parts should be based on:

• Product Status: The LM2907MX/NOPB maintains active production status, ensuring long-term availability and supply chain stability compared to the obsolete LM2907MX.
• Compliance: Both parts carry EAR99 export classification and identical HTSUS codes, indicating equivalent regulatory treatment.
• Packaging: Identical 14-SOIC mechanical specifications ensure pin-for-pin compatibility without PCB redesign.
• Electrical Performance: Matching frequency range (10 kHz) and linearity (±0.3%) guarantee equivalent circuit behavior.

Frequently Asked Questions (FAQ)

Q: Can the LM2907MX/NOPB be used as a direct replacement for the LM2907MX?

A: Yes. Both parts are Frequency to Voltage Converter ICs with identical electrical specifications (10 kHz maximum frequency, ±0.3% linearity) and mechanical packaging (14-SOIC). Pin-for-pin substitution is supported without circuit modification.

Q: What is the significance of the "/NOPB" suffix in the LM2907MX/NOPB part number?

A: The "/NOPB" designation indicates the part is supplied without plumbum (lead-free). This affects manufacturing and environmental compliance but does not alter electrical or mechanical compatibility.

Q: Why is the LM2907MX listed as obsolete?

A: Product obsolescence reflects end-of-life status from the original manufacturer. The LM2907MX/NOPB variant remains in active production, providing continuity for designs requiring this frequency-to-voltage conversion function.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the 14-SOIC package with 0.154" width (3.90mm). Pinout and mechanical dimensions are identical, enabling direct PCB substitution.

Q: What compliance certifications apply to these parts?

A: Both parts carry ROHS3 compliance and EAR99 export classification. Moisture Sensitivity Level is rated at MSL 1 (Unlimited), indicating no moisture-related handling restrictions.