Alternatives to onsemi LM339N
onsemi LM339N and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 LM339Nonsemi | LM339NTexas Instruments | LM239NTexas Instruments | +3more | |
|---|---|---|---|---|
| FFF Compatibility | Identical 14-PDIP through-hole footprint and pinout assignment.Matches the physical dimensions of the original 14-DIP package.Electrically identical to the original onsemi part, covering the exact same voltage and temperature ranges. | Identical 14-PDIP through-hole footprint and pinout assignment.Matches the physical dimensions of the original 14-DIP package.Electrically identical or superior, offering a wider temperature operating window. | ||
 AI Summary | LM339N by onsemi: Comparator Standard (General Purpose) DTL, MOS, Open-Collector, TTL 14-MDIP. | This is the direct, active replacement from Texas Instruments. It features the exact same industry-standard quad-comparator architecture, through-hole package, and electrical behavior.
| An industrial-grade drop-in alternative that expands the operating temperature range while maintaining full pin and electrical compatibility. This makes it a more robust replacement for harsh environments.
| |
| Lifecycle Status | Obsolete | Active | Unknown | |
| Market Availability | Discontinued | In stock | Unknown | |
| REACH | REACH | REACH | Unknown | |
| RoHS | RoHS | RoHS | Unknown | |
| Description | Comparator Standard (General Purpose) DTL, MOS, Open-Collector, TTL 14-MDIP | Comparator Standard (General Purpose) Open-Collector 14-PDIP | Comparator Standard (General Purpose) DTL, MOS, Open-Collector, TTL 14-MDIP | |
| Manufacturer | onsemi | Texas Instruments | Texas Instruments | |
| Type | Linear | Linear | Linear | |
| Datasheet | Open | Open | N/A | |
| Lead Time | 16 weeks | 16 weeks | Unknown | |
| Country of Origin | KR | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0090 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Type | Standard (General Purpose) | - | - | |
| Output Type | DTL, MOS, Open-Collector, TTL | - | - | |
| Mounting Type | Through Hole | - | - | |
| Package / Case | 14-DIP (0.300", 7.62mm) | - | - | |
| Number of Elements | 4 | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 LM393M/NOPBTexas Instruments | In stock | Active | 4Alternatives availableSee Alternatives |
 LM317Tonsemi | In stock | Obsolete | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi LM339N is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the onsemi LM339N are the LM339N (Texas Instruments) and the LM239N (Texas Instruments), out of 5 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Yes. The leading alternatives to the LM339N are fit-, form- and function-compatible — the same package and pinout with matching key electrical specifications — so they drop in without PCB changes. Always confirm the parameters critical to your design against the alternative's datasheet before committing.
The LM339N (onsemi) is a part in the Linear category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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