MC3456P ON Semiconductor, MC3456P Datasheet - Page 9

• Manufacturer Part Number: MC3456P
• Manufacturer: ON Semiconductor

Specifications of MC3456P

• Lead Free Status / Rohs Status: Not Compliant

Tone Burst Generator
monostable and determines the tone duration when
triggered by a positive pulse at Pin 6. The second timer is
enabled by the high output of the monostable. It is connected
as an astable and determines the frequency of the tone.
For a tone burst generator, the first timer is used as a
C1
R1
Threshold
Discharge
Trigger
Voltage
2
1
Control
Reset
C1−
R
T
MC3456
3
4
1/2
Discharge
Threshold
Trigger
7
14
Gnd
6
1
2
Reset
Output
Trigger
4
5
6
10 k
MC3456
t = 1.1 R
7
1/2
f =
Figure 21. Dual Astable Multivibrator
14
Figure 20. Tone Burst Generator
Gnd
(R1 + R2) C
APPLICATIONS INFORMATION
T
0.001
C1
0.91
V
CC
1N914
0.01 μF
Output
Control
http://onsemi.com
3
5
for C1 = C2
Output
9
Output
Reset
10
9
Dual Astable Multivibrator
available with single timer circuits. The duty cycle can be
adjusted from 5% to 95%. The two outputs provide two
phase clock signals often required in digital systems. It can
also be inhibited by use of either reset terminal.
1N914
This dual astable multivibrator provides versatility not
Duty Cycle
0.001
14
MC3456
7
1/2
V
Gnd
f =
CC
R1 + R2
10 k
Trigger
Output
R2
(R
9
8
A
1.44
0.01 mF
+ 2R
13 Discharge
12 Threshold
11 Control
8
B
) C
Trigger
10
MC3456
11
1/2
Reset
Control
Voltage
R
R
Threshold
C2
A
Discharge
12
13
B
+ 15 V
Gnd
R2
C2
+15 V
Gnd