MB3769A
■ SYNCHRONIZED OUTSIDE CLOCK CIRCUIT
Fig. 20
1.No Clamp Circuit (Connect with GND)
5 V
1 V
1 V
1 V
CT = 150 pF + Prove Capacitor (~ 15 pF)
RT = 11 kΩ
VP (5 V/div)
5 pin
MB74HC04
CT
CT (1 V/div)
VP
150 pF
5.1 kΩ
GND Level (CT)
OUT (10 V/div)
10 V
500 nS
500 nS
500 nS
Fig. 21
2.Clamp Circuit A (Dividing Resistor)
5 V
VP (5 V/div)
CT (1 V/div)
CT = 220 pF + Prove capacitor (~ 15 pF)
RT = 11 kΩ
5 pin
MB74HC04
CT
220 pF
VP
5.1 kΩ
GND Level (CT)
OUT (10 V/div)
VREF
4.7 kΩ
0.1
µF
1.2 kΩ
10 V
Fig. 22
3.Clamp Circuit B (Apply MB3761)
5 V
CT = 220 pF + Prove capacitor (~ 15 pF)
RT = 11 kΩ
VP (5 V/div)
CT (1 V/div)
5 pin
MB74HC04
CT
220 pF
VP
5.1 kΩ
VREF
GND Level (CT)
OUT (10 V/div)
820 Ω
0.1 µF
8
3
MB3761
4
10 V
5
18
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