| Manufacturer | Part Number | Description |
|---|---|---|
| LM3900 | Quad Amplifiers | |
Texas Instruments |
LM3900 | QUADRUPLE NORTON OPERATIONAL AMPLIFIER |
| LM2900 | LM2900/LM3900/LM3301 Quad Amplifiers | |
Motorola Semiconductor (now NXP Semiconductors) |
LM3900 | QUAD SINGLE SUPPLY OPERATIONAL AMPLIFIERS |