| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | LM4960 |  348Kb/12P | Piezoelectric Speaker Driver |
| LM4960SQ |  348Kb/12P | Piezoelectric Speaker Driver |
 National Semiconductor ... | LM4960SQ |  348Kb/12P | Piezoelectric Speaker Driver |
 National Semiconductor ... | LM4961 |  509Kb/16P | Ceramic Speaker Driver |
 National Semiconductor ... | LM4961LQ |  509Kb/16P | Ceramic Speaker Driver |
 National Semiconductor ... | LM4962 |  1Mb/22P | Ceramic Speaker Driver |
 National Semiconductor ... | LM4962TL |  1Mb/22P | Ceramic Speaker Driver |
 National Semiconductor ... | LM4900 |  772Kb/19P | 265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode |
| LM4900LD |  772Kb/19P | 265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode |