HCF40208BM1(2002) 查看數據表（PDF） - STMicroelectronics
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HCF40208BM1 Datasheet PDF : 11 Pages
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HCF40208B
TRUTH TABLE
CLOCK
Write
Enable
Write
1
H
S1
H
S1
X
X
X
H
L
L
L
X
X
X
X
X
Write
2
S2
S2
X
L
L
X
X
Read
1A
S1
S1
X
L
L
H
X
Read
0A
S2
S2
X
H
H
L
X
Read
1B
S1
S1
X
H
H
L
X
Read Enable Enable
Dn
0B
A
B
DnA QnB
S2
H
H
H
H
H
S2
H
X
L
L
H
L
H
H
H
X
H
L
L
L
L
L
Z
Z
Z
H
Dn to Word 1 Word 2
word 0 Out Out
H
Word 0
not
altered
Word 1
Out
Word 2
Out
X
X
Word 2 Word 1
Out Out
H
X
NC
NC
TIMING CHART
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VDD Supply Voltage
-0.5 to +22
V
VI
DC Input Voltage
-0.5 to VDD + 0.5
V
II
DC Input Current
± 10
mA
PD
Power Dissipation per Package
Power Dissipation per Output Transistor
200
mW
100
mW
Top
Operating Temperature
-55 to +125
°C
Tstg Storage Temperature
-65 to +150
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
All voltage values are referred to VSS pin voltage.
5/11
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