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參數(shù)資料
| 型號(hào)： | HD74HC273 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Octal Bus Transceivers With 3-State Outputs 20-CFP -55 to 125 |
| 中文描述： | 八路D型正反器（與Clear） |
| 文件頁(yè)數(shù)： | 5/10頁(yè) |
| 文件大?。?/td> | 56K |
| 代理商： | HD74HC273 |
HD74HC273
5
AC Characteristics
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25
°
C
Ta = –40 to
+85
°
C
Item
Symbol
V
CC
(V)
2.0
Min Typ Max Min
Max
Unit
Test Conditions
Maximum clock
f
max
—
—
6
—
5
MHz
frequency
4.5
—
—
30
—
24
6.0
—
—
35
—
28
Propagation delay t
PHL
time
2.0
—
—
145 —
180
ns
Clock to Q
4.5
—
18
29
—
36
6.0
—
—
25
—
31
t
PLH
2.0
—
—
145 —
180
ns
4.5
—
18
29
—
36
6.0
—
—
25
—
31
t
PHL
2.0
—
—
145 —
180
ns
Clear to Q
4.5
—
15
29
—
36
6.0
—
—
25
—
31
Setup time
t
su
2.0
100 —
—
125
—
ns
Data to clock
4.5
20
2
—
25
—
6.0
17
—
—
21
—
Hold time
t
h
2.0
5
—
—
5
—
ns
Clock to data
4.5
5
0
—
5
—
6.0
5
—
—
5
—
Removal time
t
rem
2.0
100 —
—
125
—
ns
Clear to clock
4.5
20
–1
—
25
—
6.0
17
—
—
21
—
Pulse width
t
w
2.0
80
—
—
100
—
ns
Clock, clear
4.5
16
8
—
20
—
6.0
14
—
—
17
—
Output rise/fall
t
TLH
t
THL
2.0
—
—
75
—
95
ns
time
4.5
—
5
15
—
19
6.0
—
—
13
—
16
Input capacitance
Cin
—
—
5
10
—
10
pF
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|---|---|
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