STMicroelectronics LM2903HYDT, Automotive Grade dual general-purpose comparator, AEC-Q100 qualified, open-collector rail-to-rail output, 2V to 36V supply, -40°C to 150°C, 8-SOIC package.
| Parameter | Value |
|---|---|
| Type | General Purpose |
| Output type | Open-Collector, Rail-to-Rail |
| Mounting | Surface Mount |
| Voltage - input offset | 7mV @ 30V |
| Voltage - supply, single (Dual (±)) | 2V ~ 36V, ±1V ~ 18V |
| Output current | 16mA @ 5V |
| Current - quiescent | 2.5mA |
| Current - input bias | 0.25µA @ 5V |
| Operating temperature | -40°C ~ 150°C |
| Grade | Automotive |
| Package | Tape & Reel (TR) Cut Tape (CT) |
| Qualification | AEC-Q100 |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Number of elements | 2 |
Each comparator in the package draws a maximum quiescent current of 2.5 mA, and the open-collector output stage allows wired-OR connections and level translation to higher-voltage logic or loads up to 16 mA at 5 V.
The supply range spans 2 V to 36 V in single-supply mode, or ±1 V to ±18 V with dual rails — the same part covers 5 V, 12 V, and 24 V automotive buses without a separate regulator.
This qualification is the gate for any design targeting production in passenger vehicles or commercial trucks.
The LM2903HYDT also carries AEC-Q100 qualification, which the LM393 does not. Both share the same pinout and basic electrical characteristics, so the LM2903HYDT can replace an LM393 in a socket that requires higher temperature tolerance, but the reverse is not recommended for hot environments.
Yes, the LM2903HYDT is pin-compatible with the LM293 and shares the same dual open-collector output architecture. The key difference is the extended temperature range: the LM2903HYDT is rated to 150°C versus the LM293's 125°C typical limit. In a socket that already sees junction temperatures above 125°C, the LM2903HYDT is the safer drop-in.