| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | DS9637AMJ/883 |  142Kb/6P | Dual Differential Line Receiver |
 National Semiconductor ... | DS9637AMJ/883 |  142Kb/6P | Dual Differential Line Receiver |
| DS9637ACM |  142Kb/6P | Dual Differential Line Receiver |
| DS9637ACM |  310Kb/8P | Dual Differential Line Receiver |
 National Semiconductor ... | DS9637ACN |  142Kb/6P | Dual Differential Line Receiver |
| DS9637ACN |  310Kb/8P | Dual Differential Line Receiver |
 National Semiconductor ... | DS9637A |  310Kb/8P | Dual Differential Line Receiver |
 National Semiconductor ... | DS9637A |  142Kb/6P | Dual Differential Line Receiver |
| DS9637A |  310Kb/8P | Dual Differential Line Receiver |
 National Semiconductor ... | DS9636 |  139Kb/6P | RS-423 Dual Programmable Slew Rate Line Driver |