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參數(shù)資料
| 型號(hào)： | UPD765B |
| 廠商： | NEC Corp. |
| 英文描述： | Single/Double Density Floppy-Disk Controller |
| 中文描述： | 單/雙密度軟盤控制器 |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 344K |
| 代理商： | UPD765B |
uPD765AIuPD765B
NEC
Bloc k Diagram
Absolute Maximum R atings
TA
= 250C
Power supply voltage,
VCC
Input
voltage,
- 0
-0.5
to
+7v
-0.510
+7v
-
1OOC
to +7ooc
-65°C to +150°C
5 to
+7v
V1
Output voltage,
VO
Operating temperature,
TOpT
Storage temperature,
TSTG
Comment:
in the Absolute Maximum Ratings could cause permanent
damage. The device should not be operated under conditions
outside the limits described in the operational sections of this
specification. Exposure
to
absolute maximum rating condi-
tions for extended periods
Exposing the device to stresses above those listed
may
affect device reliability.
DC
Th=
-1O’C to
Charac teristic s
+70°C,Vcc =
+5V%lO%
Limits
Teal
Parameter
Input voltage
IOW
Input voltage
high
Output voltage
low
Symbol
Min
-0.5
Max
Unit
v
Conditions
VIH
2.0
5 v
0.45
V
Voltage
2.4
Input voltage
low (CLK +
WCLK)
Input voltage
high
(CLK + WCLK)
Supply current
k c )
0.5
k c
V
0.65
V
v
1 5 0
140
Input load
current high
10
Input load
current low
-10
Output leakage
current high
Output leakage
current low
10
-10
C apac itanc e
Parameter
Input clock
Limits
Typ
Min
Max
20
Unit
pF
Test
Conditions
(Note
1)
Input
capacitance
output
capacitance
10
pF
(Note 1)
COUT
20
pF
Note:
(1) All
pinsexcept pin under test tied to
AC ground.
[Note 1)
5-6
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