Texas Instruments LM2903QDG4, dual differential comparator, 2V to 36V supply, -40°C to 125°C, open-drain/CMOS/TTL outputs, 8-SOIC package.
| Parameter | Value |
|---|---|
| Type | Differential |
| Output type | CMOS, MOS, Open-Drain, TTL |
| Mounting | Surface Mount |
| Voltage - input offset | 7mV @ 30V |
| Voltage - supply, single (Dual (±)) | 2V ~ 36V, ±1V ~ 18V |
| Output current | 20mA |
| Current - quiescent | 2.5mA |
| Current - input bias | 0.25µA @ 5V |
| Operating temperature | -40°C~125°C |
| Package | Tube |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Number of elements | 2 |
The open-drain, CMOS, MOS, and TTL-compatible outputs allow direct interfacing with logic families from 3.3V to 36V without level-shifting resistors.
The 2V minimum supply lets the comparator run from a single lithium cell or a 3.3V rail, while the 36V maximum covers 24V industrial buses and 12V/24V automotive systems without an external regulator.
Yes, the LM2903QDG4 is listed as obsolete by Texas Instruments. For new production, select a current LM2903 variant in the same 8-SOIC package.
No direct pin-compatible replacement is listed on the lifecycle record. The base product number LM2903 covers multiple active variants — check the LM2903 family for a current-production dual comparator in 8-SOIC with matching supply range and temperature grade.