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參數(shù)資料
| 型號： | LM555CS |
| 英文描述： | Analog Timer Circuit |
| 中文描述： | 模擬定時(shí)器電路 |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 79K |
| 代理商： | LM555CS |
8-7
Top Trace: Output voltage (2V/Div. and 0.5ms/Div.)
Bottom Trace: Capacitor voltage (1V/Div. and 0.5ms/Div.)
FIGURE 5. TYPICAL WAVEFORMS FOR REPEAT CYCLE TIMER
FIGURE 6. FREE RUNNING FREQUENCY OF REPEAT CYCLE
TIMER WITH VARIATION IN CAPACITANCE AND
RESISTANCE
Typical Performance Curves
NOTE: Where x is the decimal multiplier of the supply voltage.
FIGURE 7. MINIMUM PULSE WIDTH vs MINIMUM TRIGGER
VOLTAGE
FIGURE 8. SUPPLY CURRENT vs SUPPLY VOLTAGE
FIGURE 9. OUTPUT VOLTAGE DROP (HIGH STATE) vs
SOURCE CURRENT
FIGURE 10. OUTPUT VOLTAGE LOW STATE vs SINK
CURRENT
5V
0
3.3V
1.7V
0
t2
t1
100
10
0.1
0.01
0.001
CAP
A
CIT
ANCE
(
F)
FREQUENCY (Hz)
10-1
110
102
103
104
105
TA = 25
oC, V+ = 5V
R1 + 2R2 = 1k
10k
100k
1M
10M
1
MINIMUM TRIGGER (PULSE) VOLTAGE (x V+) (NOTE)
0.4
0.3
0.2
0.1
0
150
100
50
TA = -55
oC
25oC
125oC
70oC
0oC
MINIMUM
PULSE
WIDTH
(ns)
SUPPLY VOLTAGE (V)
SUPPL
Y
CURRENT
(mA)
15
12.5
10
7.5
5
2.5
0
10
9
8
7
6
5
4
3
2
1
TA = 125
oC
25oC
50oC
SOURCE CURRENT (mA)
SUPPL
Y
V
O
L
T
A
GE
-
OUTPUT
V
O
L
T
A
GE
(V)
100
10
1
2.0
1.6
1.2
0.8
0.4
0
25oC
TA = -55
oC
125oC
5V
≤ V+ ≤ 15V
SINK CURRENT (mA)
OUTPUT
V
O
L
T
A
GE
-
LO
W
ST
A
TE
(V)
100
10
1
10.0
1.0
0.1
0.01
25oC
TA = -55
oC
125oC
V+ = 5V
CA555, CA555C, LM555, LM555C, NE555
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