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LM339DTalternatives & cross reference

1 Chinese-brand replacement candidate for LM339DT (STMicroelectronics) in Analog ICs — each labeled with its verification level and parameter differences. Shenzhen sourcing, quote in 24 hours.

LM339DR

UMW · Analog ICs

VerifiedFAE reviewed
Same standard partPin-compatibleUpdated 2026-11-02Vendor document
ParameterLM339DTLM339DREngineering note
Package and exact order codeST LM339DT: SO14, tape and reelUMW LM339DR: SOP-14, 2500-unit tape and reelBoth exact codes use the standard 14-pin quad-comparator pinout and a nominal 1.27 mm lead pitch. DT and DR are different manufacturer ordering suffixes for the SO/SOP-14 reel format. The PCB land pattern, paste aperture and assembly tolerances still require independent release checks.
Temperature and input offset voltage0 C to +70 C; 2 mV typical and 5 mV maximum at 25 C; 9 mV maximum over temperature0 C to +70 C; 2 mV typical and 5 mV maximum at 25 C; 9 mV maximum over temperatureThe reviewed exact-order temperature range and offset limits correspond. Precision threshold designs still need an application-specific error budget and board-level validation.
Response and supply1.3 us typical response with 5 mV overdrive; +/-18 V maximum supply or 36 V total1.3 us typical response with 5 mV overdrive; electrical table characterized to a 30 V VCC maximumThe documented typical response corresponds. Transient behavior at the absolute supply limit and the intended comparator overdrive must be checked in the target circuit.
ESD and thermal characterizationST specifies HBM 500 V, machine model 100 V and CDM 1500 VAn equivalent complete ESD and thermal-resistance set was not found in the reviewed UMW datasheetDo not copy ST's ESD, junction-temperature or thermal-resistance limits to the target. Board-level ESD, thermal margin and fault conditions require independent evaluation.

FAE documentary review accepted for the exact ST LM339DT and UMW LM339DR order codes. Both are 14-pin quad comparators with the standard pinout, 0 C to +70 C exact-order rating, 5 mV maximum room-temperature input offset, 9 mV maximum documented full-temperature offset and 1.3 us typical response. The DT and DR suffixes are manufacturer-specific SO/SOP-14 tape-and-reel codes. Document review only; no bench, temperature-cycle, EMC, reliability or production qualification was performed.

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Disclaimer

Cross-reference suggestions for LM339DT are provided for engineering convenience and are based on published specifications, vendor documents, or parametric analysis as labeled on each entry. They do not constitute an endorsement by, or an affiliation with, STMicroelectronics, and they are not a guarantee of suitability for any specific application. Always validate alternatives against both manufacturers' current datasheets and your own qualification process before production use.