Alternatives to onsemi LM339DG
onsemi LM339DG and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 LM339DGonsemi | LM339DR2Gonsemi |  LM339DRTexas Instruments | +1more | |
|---|---|---|---|---|
| FFF Compatibility | Matches the original 14-SOIC package footprint and pin assignments exactly with no layout modifications needed.Identical physical dimensions, pitch, and SMD mounting style.Identical electrical performance parameters including 36V maximum supply voltage and 5mV maximum offset voltage. | Shares the standard industry 14-SOIC footprint and matches pin for pin.Identical body dimensions, pitch, and mounting package profile.The maximum supply voltage is rated lower at 30V compared to the original part's 36V rating. | ||
 AI Summary | LM339DG by onsemi: Comparator Standard (General Purpose) CMOS, Open-Collector, TTL 14-SOIC. | The LM339DR2G is the official active modern replacement from onsemi for the obsolete LM339DG. It provides identical electrical specifications, package geometry, and pinouts, with the only difference being the tape-and-reel shipment format instead of tubes.
| The LM339DR is Texas Instruments' widely-available second-source equivalent to the LM339 series. It acts as a pin-compatible drop-in replacement, though engineers must ensure their supply rail does not exceed its 30V limit.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Comparator Standard (General Purpose) CMOS, Open-Collector, TTL 14-SOIC | Comparator Standard (General Purpose) CMOS, Open-Collector, TTL 14-SOIC | Comparator Standard (General Purpose) Open-Collector 14-SOIC | |
| Manufacturer | onsemi | onsemi | Texas Instruments | |
| Type | Linear | Linear | Linear | |
| Datasheet | Open | Open | Open | |
| Lead Time | 4 weeks | 13 weeks | 16 weeks | |
| Country of Origin | CN | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0090 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Type | Standard (General Purpose) | - | - | |
| Output Type | CMOS, Open-Collector, TTL | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | - | - | |
| Number of Elements | 4 | - | - | |
| Operating Temperature | 0°C ~ 70°C | - | - | |
| Current - Output (Typ) | 16mA @ 5V | - | - | |
| Supplier Device Package | 14-SOIC | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 LM339DSTMicroelectronics | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 LM339DRROHM Semiconductor | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 LM339Nonsemi | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
 LM393Donsemi | In stock | Active | 6Alternatives availableSee Alternatives |
 LM358DGonsemi | In stock | Obsolete | 5Alternatives availableSee Alternatives |
 LM339PTROHM Semiconductor | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi LM339DG 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 LM339DG are the LM339DR2G (onsemi) and the LM339DR (Texas Instruments), out of 3 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the LM339DG are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The LM339DG (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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