MC3456
V
CC
V
CC
I
14
CC
V
R
5 k
Reset
4
8
700
1 (13)
5 (9)
2 (12)
Threshold
Discharge
Output
+
5
7
V
CC
+
Comp
A
Flip
Flop
3 (11)
Control Voltage
Control
Voltage
0.01 μF
Discharge
R
S
−
1/2
Q
5 k
5 k
MC3456
3
Threshold
6
Inhibit/
Reset
+
V
S
2.0 k
Output
Comp
B
I
th
6 (8)
Trigger
Gnd
1
Trigger
−
V
I
I
O
Sink
2
Source
7
4 (10)
Reset
Gnd
Test circuit for measuring DC parameters (to set output and
measure parameters):
a) When V w 2/3 V , V is low.
Figure 2. Block Diagram (1/2 Shown)
S
CC
CC
O
O
b) When V vꢀ1/3 V , V is high.
S
c) When V is low, Pin 7 sinks current. To test for Reset, set V high,
O
O
c) apply Reset voltage, and test for current flowing into Pin 7. When Reset
c) is not in use, it should be tied to V
.
CC
Figure 3. General Test Circuit
MAXIMUM RATINGS (T = +25°C, unless otherwise noted.)
A
Rating
Symbol
Value
Unit
Power Supply Voltage
Discharge Current
V
+18
200
Vdc
mA
CC
I
dis
Power Dissipation (Package Limitation)
P Suffix, Plastic Package, Case 646
P
D
625
5.0
1.0
8.0
mW
mW/°C
W
Derate above T = +25°C
A
D Suffix, Plastic Package, Case 751
Derate above T = +25°C
mW/°C
A
0 to +70
Operating Ambient Temperature Range
Storage Temperature Range
T
°C
°C
A
T
stg
−65 to +150
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