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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAG E 16
MODEL
SFD-321B
5. SIGNAL CHARACTERISTICS
5.1 Signal Level
<No te>
(*1) "LOW" level Max. sink current is 48 mA.
5.2 Recommended Interface Circuit
Signal Logic Input Level Output Level (*1)
Low (True) 0.9 V Max. 0.4 V Max.
High (Fals e) 2.2 V Min. 2.4 V Min.
FRAME GND
OUTPUT
O PEN DRAIN
CMO S
(SCHMITT TRIGG ER INPUT)
INPUT
150
Ω∼
2.2
(1
is recommended)
Vdd
Vdd
7438 SERIES
CMOS OR
EQ UIVALENT
74LS14
74HC14 OR
EQ UIVALENT
FDD SIDE
(1
)
HOST SIDE