LM555CM Fairchild Semiconductor, LM555CM Datasheet - Page 8

IC TIMER SINGLE PREC 8-SOP

LM555CM

Manufacturer Part Number
LM555CM
Description
IC TIMER SINGLE PREC 8-SOP
Manufacturer
Fairchild Semiconductor
Type
555 Type, Timer/Oscillator (Single)r
Datasheet

Specifications of LM555CM

Voltage - Supply
4.5 V ~ 16 V
Current - Supply
7.5mA
Operating Temperature
0°C ~ 70°C
Package / Case
8-SOIC (3.9mm Width)
Frequency
100kHz
Number Of Internal Timers
1
Supply Voltage (max)
16 V
Supply Voltage (min)
4.5 V
Maximum Power Dissipation
600 mW
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Dc
N/A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Count
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
LM555CMFS

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM555CM
Manufacturer:
NS
Quantity:
143
Part Number:
LM555CM
Manufacturer:
NS
Quantity:
20 000
Company:
Part Number:
LM555CM
Quantity:
171
Part Number:
LM555CM/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
Part Number:
LM555CMM
Manufacturer:
NS
Quantity:
198
Part Number:
LM555CMM
Manufacturer:
NS/国半
Quantity:
20 000
Company:
Part Number:
LM555CMM
Quantity:
46
Part Number:
LM555CMM/NOPB
Manufacturer:
AD
Quantity:
5 550
Company:
Part Number:
LM555CMMX/NOPB
Quantity:
1 500
Part Number:
LM555CMX
Manufacturer:
NSC
Quantity:
590
Part Number:
LM555CMX
Manufacturer:
TI/NS
Quantity:
12 000
Part Number:
LM555CMX
Manufacturer:
FSC
Quantity:
20 000
Part Number:
LM555CMX
Manufacturer:
NSC
Quantity:
12 893
Company:
Part Number:
LM555CMX
Quantity:
3 000
Part Number:
LM555CMX NOPB
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
LM555CMX/NOPB
Manufacturer:
NS
Quantity:
6 263
Part Number:
LM555CMX/NOPB
Manufacturer:
TI
Quantity:
8 108
Part Number:
LM555CMX/NOPB
0
LM555/NE555/SA555
4. Pulse Width Modulation
4. Pulse Width Modulation
The timer output waveform may be changed by modulating the control voltage applied to the timer's pin 5 and changing the
reference of the timer's internal comparators. Figure 9 illustrates the pulse width modulation circuit.
When the continuous trigger pulse train is applied in the monostable mode, the timer output width is modulated according to
the signal applied to the control terminal. Sine wave as well as other waveforms may be applied as a signal to the control
terminal. Figure 10 shows the example of pulse width modulation waveform.
5. Pulse Position Modulation
5. Pulse Position Modulation
If the modulating signal is applied to the control terminal while the timer is connected for the astable operation as in Figure 11,
the timer becomes a pulse position modulator.
In the pulse position modulator, the reference of the timer's internal comparators is modulated which in turn modulates the
timer output according to the modulation signal applied to the control terminal.
Figure 12 illustrates a sine wave for modulation signal and the resulting output pulse position modulation : however, any wave
shape could be used.
8 8 8 8
4. Pulse Width Modulation
4. Pulse Width Modulation
5. Pulse Position Modulation
5. Pulse Position Modulation
Figure 9. Circuit for Pulse Width Modulation
Figure 9. Circuit for Pulse Width Modulation
Figure 9. Circuit for Pulse Width Modulation
Figure 9. Circuit for Pulse Width Modulation
Trigger
Trigger
Trigger
Trigger
Output
Output
Output
Output
2
3
TRIG
OUT
RESET
4
GND
1
Vcc
THRES
DISCH
8
CONT
Figure 8. Waveforms of Frequency Divider Operation
Figure 8. Waveforms of Frequency Divider Operation
Figure 8. Waveforms of Frequency Divider Operation
Figure 8. Waveforms of Frequency Divider Operation
7
6
5
Input
Input
Input
Input
C C C C
R R R R
A A A A
+Vcc
+Vcc
+Vcc
+Vcc
Figure 10. Waveforms of Pulse Width Modulation
Figure 10. Waveforms of Pulse Width Modulation
Figure 10. Waveforms of Pulse Width Modulation
Figure 10. Waveforms of Pulse Width Modulation

Related parts for LM555CM