mc33465n ON Semiconductor, mc33465n Datasheet - Page 6

• Manufacturer Part Number: mc33465n
• Description: Micropower Undervoltage Sensing Circuits With Programmable Ouput Delay
• Manufacturer: ON Semiconductor

sensing circuits which offer a programmable time delayed
output with the choice of either complementary output drive
or open drain output configurations. Figure 14 shows the
timing relationships between the input voltage and the
resulting circuit waveforms. When the input voltage (V
exceeds the sense comparator threshold, the timing
capacitor
resistor. When the output inverting driver threshold is
exceeded, the Reset output switches from a logic “0” to a
The MC33465 series are micropower undervoltage
is
allowed to charge through the internal delay
C
C
D
D
C
C
5
5
D
D
MC33465
MC33465
Series
Series
2
3
2
3
Figure 13. Typical Complementary Output Application
Input
Gnd
Input
Gnd
APPLICATION CIRCUIT INFORMATION
Figure 12. Typical Open Drain Application
1
Reset
1
Reset
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in
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6
logic “1”. The top curve of Figure 11 provides the nominal
delay time for a given value of delay capacitance. When V
drops below the comparator threshold minus hysteresis
voltage, the delay capacitor discharges. When the
capacitance voltage drops below the inverting drive
threshold, the output switches from a logic “1” to a logic “0”.
The bottom curve in Figure 11 provides typical delay time
for given delay capacitance values. The inverting driver
threshold voltage is typically about V
Figure 10.
R
Reset
Reset
V
Gnd
V
Gnd
DD
DD
CPU
CPU
V
V
in
DD
DD
/2, as shown in
in