| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | LMC660EM |  461Kb/14P | CMOS Quad Operational Amplifier |
 National Semiconductor ... | LMC660EN |  461Kb/14P | CMOS Quad Operational Amplifier |
| LMC660EP |  891Kb/15P | CMOS Quad Operational Amplifier |
| LMC660AI |  441Kb/12P | CMOS Quad Operational Amplifier |
| LMC660AI |  873Kb/14P | CMOS Quad Operational Amplifier |
| LMC660AIM |  461Kb/14P | CMOS Quad Operational Amplifier |
| LMC660AIM |  441Kb/12P | CMOS Quad Operational Amplifier |
| LMC660AIM |  873Kb/14P | CMOS Quad Operational Amplifier |
 National Semiconductor ... | LMC660AIMEP |  891Kb/15P | CMOS Quad Operational Amplifier |
| LMC660AIMX |  441Kb/12P | CMOS Quad Operational Amplifier |
| LMC660AIMX |  873Kb/14P | CMOS Quad Operational Amplifier |
 National Semiconductor ... | LMC660AIN |  461Kb/14P | CMOS Quad Operational Amplifier |