| 摘要 |
A floppy disk drive comprises at least a data read/write-unit for reading or writing data through a head, motor drivers for driving a spindle motor and a stepping motor, a control unit for controlling overall operation of the floppy disk drive, and a data output unit for supplying data to a main controller via a set cable. The data output unit comprises an output transistor outputting the data to the set cable and supplied with a pull-up current from the main controller via the set cable, and a pull-up transistor and a pull-down transistor connected in series between a power source terminal and a ground. The pull-up transistor and the pull-down transistor drive the output transistor in cooperation, and a current limiting resistance is connected in series to the pull-down transistor.
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