LM2917M Frequency to Voltage Converter IC - Equivalent & Substitute Parts

Part Overview

The LM2917M is a Frequency to Voltage Converter IC manufactured by Texas Instruments, designed for applications requiring conversion of frequency signals up to 10 kHz into proportional voltage outputs. This component operates with ±0.3% linearity and is housed in a 14-SOIC surface mount package.

The LM2917M has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for systems utilizing this frequency conversion functionality.

Substiute Parts

LM2917M

Texas InstrumentsIn Stock: 38231LM2917M Datasheet

Current PartRFQ

LM2917M-8/NOPB

Texas InstrumentsIn Stock: 2580LM2917M-8/NOPB Datasheet

DirectRFQ

LM2917M/NOPB

Texas InstrumentsIn Stock: 754LM2917M/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2917M is determined by the following criteria:

Functional Parameters (Must Match):

• Base product number: LM2917
• Type: Frequency to Voltage Converter
• Frequency - Max: 10 kHz
• Linearity: ±0.3%
• Mounting Type: Surface Mount
• MSL: 1 (Unlimited)

Package Considerations: Substitute parts may differ in package configuration (8-SOIC versus 14-SOIC) provided the functional electrical specifications remain identical. Package selection depends on circuit board layout and pin count requirements of the target application.

Compliance Status: Active product variants with current RoHS3 compliance are preferred for new designs. Obsolete status of the original part necessitates transition to active alternatives.

Parameter Comparison

Engineering Selection Recommendations

LM2917M/NOPB is the primary substitute for the obsolete LM2917M. Both parts share identical package configuration (14-SOIC), functional specifications (10 kHz frequency conversion, ±0.3% linearity), and electrical characteristics. The LM2917M/NOPB maintains active product status and meets ROHS3 compliance requirements, making it suitable for new designs and production continuity without circuit board redesign.

LM2917M-8/NOPB serves as an alternative substitute when circuit board layout permits use of an 8-SOIC package. This variant provides identical frequency conversion and linearity performance but in a smaller package footprint. Selection of this part requires verification that the application circuit supports 8-pin configuration and that all required functionality can be implemented with the reduced pin count.

Both substitute parts maintain REACH Unaffected status and EAR99 classification consistent with the original LM2917M.

Frequently Asked Questions (FAQ)

Q: Can LM2917M/NOPB directly replace LM2917M without circuit modification?

A: Yes. LM2917M/NOPB is pin-compatible and functionally equivalent. Both use 14-SOIC packaging with identical electrical specifications. No circuit board redesign is required.

Q: What is the difference between LM2917M/NOPB and LM2917M-8/NOPB?

A: The primary difference is package configuration. LM2917M/NOPB uses 14-SOIC packaging, while LM2917M-8/NOPB uses 8-SOIC packaging. Both deliver identical frequency conversion performance (10 kHz, ±0.3% linearity). The 8-SOIC variant requires circuit board redesign to accommodate the reduced pin count.

Q: Why is RoHS compliance status different between the original and substitute parts?

A: The original LM2917M is classified as RoHS non-compliant and has reached obsolete status. Active substitute variants (LM2917M/NOPB and LM2917M-8/NOPB) meet ROHS3 compliance standards, reflecting current manufacturing and environmental regulations.

Q: Are there any functional limitations when using substitute parts?

A: No. Both substitute parts maintain the specified 10 kHz maximum frequency and ±0.3% linearity. Functional performance is equivalent to the original LM2917M.

Q: Which substitute should be selected for new designs?

A: LM2917M/NOPB is recommended for new designs requiring 14-pin configuration. LM2917M-8/NOPB is suitable when 8-pin packaging is compatible with the application and board space is constrained.