| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | LM1112 |  203Kb/6P | DOLBY B-TYPE NOISE REDUCTION PROCESSOR |
| LM1112A |  203Kb/6P | DOLBY B-TYPE NOISE REDUCTION PROCESSOR |
| LM1112A |  195Kb/8P | DolbyÉ B-Type Noise Reduction Processor April 1987 |
| LM1112AN |  203Kb/6P | DOLBY B-TYPE NOISE REDUCTION PROCESSOR |
| LM1112A |  195Kb/8P | DolbyÉ B-Type Noise Reduction Processor April 1987 |
| LM1112B |  203Kb/6P | DOLBY B-TYPE NOISE REDUCTION PROCESSOR |
| LM1112B |  195Kb/8P | DolbyÉ B-Type Noise Reduction Processor April 1987 |
| LM1112BN |  203Kb/6P | DOLBY B-TYPE NOISE REDUCTION PROCESSOR |
| LM1112C |  203Kb/6P | DOLBY B-TYPE NOISE REDUCTION PROCESSOR |
| LM1112C |  195Kb/8P | DolbyÉ B-Type Noise Reduction Processor April 1987 |
| LM1112CN |  203Kb/6P | DOLBY B-TYPE NOISE REDUCTION PROCESSOR |