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參數(shù)資料
| 型號： | HD74LV163A |
| 廠商： | Hitachi,Ltd. |
| 元件分類： | 通用總線功能 |
| 英文描述： | Synchronous 4-bit Binary Counter (Synchronous Clear) |
| 中文描述： | 同步4位二進(jìn)制計數(shù)器（同步清除） |
| 文件頁數(shù)： | 10/19頁 |
| 文件大小： | 77K |
| 代理商： | HD74LV163A |
HD74LV163A
10
Switching Characteristics (cont)
V
CC
= 5.0
±
0.5 V
Ta = 25
°
C
Ta = –40 to 85
°
C
Item
Symbol
Min
Typ
Max
Min
Max
Unit
Test Conditions
FROM
(Input)
TO
(Output)
Maximum
clock
frequency
t
max
135
185
—
115
—
MHz
C
L
= 15 pF
95
125
—
85
—
C
L
= 50 pF
Propa-
gation
delay time
t
PLH
/t
PHL
—
4.9
8.1
1.0
9.5
ns
C
L
= 15 pF
CLK
Q
—
8.7
10.1
1.0
11.5
C
L
= 50 pF
t
PLH
/t
PHL
—
4.9
8.1
1.0
9.5
C
L
= 15 pF
CLK
Carry
Count
mode
—
6.4
10.1
1.0
20.0
C
L
= 50 pF
t
PLH
/t
PHL
—
6.2
10.3
1.0
12.0
C
L
= 15 pF
CLK
Carry
Load
mode
—
7.7
12.3
1.0
14.0
C
L
= 50 pF
t
PLH
/t
PHL
—
4.9
8.1
1.0
9.5
C
L
= 15 pF
ENT
Carry
—
6.4
10.1
1.0
11.5
C
L
= 50 pF
Setup time
t
su
4.5
—
—
4.5
—
ns
Data before CLK
↑
5.0
—
—
6.0
—
LOAD
before CLK
↑
5.0
—
—
6.0
—
ENT, ENP before
CLK
↑
3.5
—
—
3.5
—
CLR
before CLK
↑
Hold time
t
h
1.0
—
—
1.0
—
ns
1.5
—
—
1.5
—
CLR
after CLK
↑
Pulse
width
t
w
5.0
—
—
5.0
—
ns
CLK H or L
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