LM2917N Equivalent & Substitute Parts

Part Overview

The LM2917N is a Frequency to Voltage Converter IC designed for 10 kHz operation with ±0.3% linearity, packaged in a 14-PDIP through-hole configuration. This component is classified as obsolete by Texas Instruments. Finding equivalent substitute parts is necessary due to the discontinued status of the original manufacturer part, which may impact long-term availability and procurement timelines for new designs or production runs.

Substiute Parts

LM2917N

Texas InstrumentsIn Stock: 47909LM2917N Datasheet

Current PartRFQ

LM2917N/NOPB

National SemiconductorIn Stock: 2112LM2917N/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2917N is determined by strict equivalence across the following critical parameters:

• Frequency to Voltage Converter functionality
• Maximum frequency rating of 10 kHz
• Linearity specification of ±0.3%
• 14-PDIP package configuration
• Through-hole mounting compatibility

The LM2917N/NOPB qualifies as a direct substitute based on identical electrical specifications and mechanical packaging. The primary distinction is product status: the substitute part is Active, whereas the original is Obsolete.

Parameter Comparison

Engineering Selection Recommendations

The LM2917N/NOPB is the direct equivalent substitute for the LM2917N. Selection of the substitute part is justified by:

• Identical electrical performance specifications (10 kHz maximum frequency, ±0.3% linearity)
• Identical mechanical packaging (14-PDIP through-hole)
• Active product status ensuring continued availability
• ROHS3 compliance of the substitute part, providing regulatory advantage over the non-compliant original

For applications requiring RoHS compliance or long-term component availability, the LM2917N/NOPB is the appropriate selection. Both parts share the same base product number (LM2917) and are functionally interchangeable within the specified electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can the LM2917N/NOPB be used as a direct replacement for the LM2917N?

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-PDIP). They are functionally interchangeable.

Q: What is the primary difference between these two parts?

A: The LM2917N is obsolete, while the LM2917N/NOPB is active. Additionally, the LM2917N/NOPB is ROHS3 compliant, whereas the original LM2917N is RoHS non-compliant.

Q: Are there any package or pinout differences?

A: No. Both parts use the 14-DIP (0.300", 7.62mm) package with identical pinout and through-hole mounting configuration.

Q: Which part should be selected for new designs?

A: The LM2917N/NOPB should be selected for new designs due to its active product status and ROHS3 compliance.

Q: Is the linearity specification identical between both parts?

A: Yes. Both parts maintain ±0.3% linearity across the 10 kHz operating range.