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參數(shù)資料
| 型號： | HD74HC149P |
| 英文描述： | ENCODER|HC-CMOS|DIP|20PIN|PLASTIC |
| 中文描述： | 編碼器系列| HC - CMOS制|雙酯| 20針|塑料 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大?。?/td> | 42K |
| 代理商： | HD74HC149P |
HD74HC01
2
DC Characteristics
Ta = 25
°C
Ta = –40 to
+85
°C
Item
Symbol
V
CC (V)
Min Typ Max Min
Max
Unit
Test Conditions
Input voltage
V
IH
2.0
1.5
—
1.5
—
V
4.5
3.15 —
—
3.15
—
6.0
4.2
—
4.2
—
V
IL
2.0
—
0.5
—
0.5
V
4.5
—
1.35 —
1.35
6.0
—
1.8
—
1.8
Output voltage
V
OL
2.0
—
0.0
0.1
—
0.1
V
Vin = V
IH or VIL
I
OL = 20 A
4.5
—
0.0
0.1
—
0.1
6.0
—
0.0
0.1
—
0.1
4.5
—
0.26 —
0.33
I
OL = 4 mA
6.0
—
0.26 —
0.33
I
OL = 5.2 mA
Off-state output
current
Io(off)
6.0
—
±0.5 —
±5.0 A
Vin = V
IH or VIL,
Vout = V
CC or GND
Input current
Iin
6.0
—
±0.1 —
±1.0 A
Vin = V
CC or GND
Quiescent supply
current
I
CC
6.0
—
1.0
—
10
A
Vin = V
CC or GND, Iout = 0 A
AC Characteristics (C
L = 50 pF, Input tr = tf = 6 ns)
Ta = 25
°C
Ta = –40 to
+85
°C
Item
Symbol
V
CC (V)
Min Typ Max Min
Max
Unit
Test Conditions
Propagation delay t
PLH
2.0
—
90
—
115
ns
time
4.5
—
11
18
—
23
6.0
—
15
—
20
t
PHL
2.0
—
90
—
112
ns
4.5
—
7
18
—
22
6.0
—
15
—
18
Output fall time
t
THL
2.0
—
75
—
95
ns
4.5
—
5
15
—
19
6.0
—
13
—
16
Input capacitance
Cin
—
5
10
—
10
pF
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