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Part Number DS9638
Description RS-422 Dual High Speed Differential Line Driver
Info DS9638 RS-422 Dual High Speed Differential Line Dr.
Manufacture National Semiconductor
for PC Download DS9638 Datasheet



Part Number DS9638QML
Description DS9638QML RS-422 Dual High Speed Differential Line Driver (Rev. A)
Info .
Manufacture ETCTI
for PC Download DS9638QML Datasheet



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