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參數(shù)資料
| 型號(hào)： | HD74HC294 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Programmable Frequency Divider/Digital Timer |
| 中文描述： | 可編程分頻器/數(shù)字定時(shí)器 |
| 文件頁(yè)數(shù)： | 8/12頁(yè) |
| 文件大?。?/td> | 68K |
| 代理商： | HD74HC294 |
HD74HC292/HD74HC294
8
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) Min Typ Max Min
2.0
—
—
Max
Unit
Test Conditions
Maximum clock
f
max
5
—
4
MHz
frequency
4.5
—
—
27
—
21
6.0
—
—
31
—
24
Propagation delay t
PLH
time
2.0
—
—
600 —
750
ns
Clock to output
4.5
—
16
120 —
150
6.0
—
—
100 —
125
Removal time
t
rem
2.0
100 —
—
125
—
ns
4.5
20
–4
—
25
—
6.0
17
—
—
21
—
Pulse width
t
w
2.0
80
—
—
100
—
ns
4.5
16
14
—
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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