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參數(shù)資料
| 型號： | 74HCT181N3 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通用總線功能 |
| 英文描述： | DRILL BIT HIGH SPEED STEEL .040,1 |
| 中文描述： | HCT SERIES, 4-BIT ARITHMETIC LOGIC UNIT, PDIP24 |
| 封裝： | 0.300 INCH, PLASTIC, SOT-222-1, DIP-24 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 165K |
| 代理商： | 74HCT181N3 |
1998 Jun 10
3
Philips Semiconductors
Product specification
4-bit arithmetic logic unit
74HC/HCT181
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°
C; t
r
= t
f
= 6 ns
Notes
1.
C
PD
is used to determine the dynamic power dissipation (P
D
in
μ
W):
P
D
= C
PD
×
V
CC2
×
f
i
+
∑
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz
f
o
= output frequency in MHz
∑
(C
L
×
V
CC2
×
f
o
) = sum of outputs
C
L
= output load capacitance in pF
V
CC
= supply voltage in V
For HC the condition is V
I
= GND to V
CC
For HCT the condition is V
I
= GND to V
CC
1.5 V
2.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
t
PHL
/ t
PLH
propagation delay
A
n
or B
n
to A=B
C
n
to C
n+
4
input capacitance
power dissipation capacitance
per L package
C
L
= 15 pF; V
CC
= 5 V
28
17
3.5
90
30
21
3.5
92
ns
ns
pF
pF
C
I
C
PD
notes 1 and 2
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
A
B
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