LM555C Harris Corporation, LM555C Datasheet - Page 5

• Manufacturer Part Number: LM555C
• Description: Timers for Timing Delays and Oscillator Application
• Manufacturer: Harris Corporation

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DataSheet
4
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Typical Performance Curves
NOTE: Where x is the decimal multiplier of the supply voltage.
FIGURE 5. TYPICAL WAVEFORMS FOR REPEAT CYCLE TIMER
3.3V
1.7V
FIGURE 7. MINIMUM PULSE WIDTH vs MINIMUM TRIGGER
FIGURE 9. OUTPUT VOLTAGE DROP (HIGH STATE) vs
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5V
0
0
150
100
2.0
1.6
1.2
0.8
0.4
Bottom Trace: Capacitor voltage (1V/Div. and 0.5ms/Div.)
50
0
1
0
Top Trace: Output voltage (2V/Div. and 0.5ms/Div.)
MINIMUM TRIGGER (PULSE) VOLTAGE (x V+) (NOTE)
VOLTAGE
SOURCE CURRENT
t
1
0.1
T
A
t
2
= -55
25
SOURCE CURRENT (mA)
o
C
o
125
C
o
C
0.2
T
10
A
CA555, CA555C, LM555, LM555C, NE555
= -55
o
0
C
o
C
0.3
125
5V
o
C
V+
25
70
o
o
C
C
15V
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0.4
100
8-7
FIGURE 10. OUTPUT VOLTAGE LOW STATE vs SINK
0.001
FIGURE 6. FREE RUNNING FREQUENCY OF REPEAT CYCLE
0.01
100
10.0
0.01
0.1
10
10
1.0
0.1
FIGURE 8. SUPPLY CURRENT vs SUPPLY VOLTAGE
9
8
7
6
5
4
3
2
1
1
10
0
1
-1
V+ = 5V
TIMER WITH VARIATION IN CAPACITANCE AND
RESISTANCE
CURRENT
2.5
1
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10M
5
T
10
A
SINK CURRENT (mA)
SUPPLY VOLTAGE (V)
1M
= -55
FREQUENCY (Hz)
7.5
o
100k
C
10
10
2
25
o
10k
10
C
T
A
= 125
10
T
A
3
R
50
12.5
125
o
= 25
1
C
o
+ 2R
C
o
C
o
C, V+ = 5V
10
2
25
= 1k
4
o
15
C
100
10
5