LMC555CMM National Semiconductor, LMC555CMM Datasheet - Page 7

• Manufacturer Part Number: LMC555CMM
• Description: Timer IC
• Manufacturer: National Semiconductor

Specifications of LMC555CMM

• Frequency: 3MHz
• No. Of Pins: 8
• Peak Reflow Compatible (260 C): No
• Supply Voltage: 15V
• Current Rating: 150A
• Leaded Process Compatible: No
• Mounting Type: Surface Mount
• Timer Type: Timer
• Package / Case: 8-MSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Application Info
the modulating signal, since the threshold voltage and hence
the time delay is varied. Figure 11 shows the waveforms
generated for a triangle wave modulation signal.
FIGURE 10. Pulse Position Modulator
(Continued)
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V
TIME = 0.1 ms/Div.
R
R
C = 0.01µF
50% DUTY CYCLE OSCILLATOR
The frequency of oscillation is
CC
A
B
= 3.9 k
= 3 k
FIGURE 11. Pulse Position Modulator Waveforms
= 5V
f = 1/(1.4 R
FIGURE 12. 50% Duty Cycle Oscillator
C
C)
Bottom Trace: Output Voltage 2V/Div.
Top Trace: Modulation Input 1V/Div.
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