| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | LM49321 |  1Mb/42P | Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headphone Output and RF Suppression |
| LM49321RL |  1Mb/42P | Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headphone Output and RF Suppression |
 National Semiconductor ... | LM49321RL |  1Mb/ 42P | Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headphone Output and RF Suppression |
 National Semiconductor ... | LM4930 |  966Kb/ 33P | Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers |
| LM4930 |  994Kb/ 35P | Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers |
 National Semiconductor ... | LM4930ITL |  966Kb/ 33P | Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers |
 National Semiconductor ... | LM4930 |  994Kb/ 35P | Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers |
 National Semiconductor ... | LM4931 |  1Mb/ 47P | Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers |
| LM4931 |  1Mb/ 48P | Audio Subsystem with Mono High Efficiency Loudsperker and Stereo Headphone Amplifiers |