| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | LM4873 |  532Kb/19P | Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
| LM4873 |  956Kb/25P | Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
| LM4873MT |  532Kb/19P | Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
| LM4873MTE |  532Kb/19P | Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
| LM4873MTE-1 |  532Kb/19P | Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
 National Semiconductor ... | LM4873 |  956Kb/25P | Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
 National Semiconductor ... | LM4870 |  259Kb/8P | 1.1W Audio Power Amplifier with Shutdown Mode |
| LM4870M |  259Kb/8P | 1.1W Audio Power Amplifier with Shutdown Mode |
| LM4871 |  243Kb/8P | 1.1W Audio Power Amplifier with Shutdown Mode |
| LM4871 |  469Kb/16P | 3W Audio Power Amplifier with Shutdown Mode |