CAT8801
http://onsemi.com
4
TYPICAL OPERATING CHARACTERISTICS
(V
CC
= Full range, T
A
= −40°C to +85°C unless otherwise noted. Typical values at T
A
= +25°C.)
Figure 1. Power−Up Reset Timeout Figure 2. Supply Current vs. Temperature
TEMPERATURE (°C) TEMPERATURE (°C)
1007550250−25−50
200
250
300
350
1007550250−25−50
100
120
140
160
180
200
220
Figure 3. Power−Down Reset Delay vs.
Temperature
Figure 4. Normalized Reset Threshold vs.
Temperature
TEMPERATURE (°C) TEMPERATURE (°C)
1007550250−25−50
2.5
3.0
3.5
4.0
4.5
5.0
1251007550250−25−50
0.996
0.997
0.998
0.999
1.000
1.001
1.002
1.003
t
RST
(ms)
I
SB
(nA)
POWER−DOWN RESET DELAY (ms)
NORMALIZED THRESHOLD
V
CC
= 5.5 V
V
CC
= 1.8 V
V
CC
= 5.5 V
V
CC
= 1.8 V
150
Description
Reset Timing
The reset signal is asserted LOW for the CAT8801 when the power supply voltage falls below the threshold trip voltage and
remains asserted for at least 140 ms after the power supply voltage has risen above the threshold.
Figure 5. Reset Timing Diagram
5V
0V
5V
0V
Threshold
Voltage
140ms
minimum
Reset Timeout Period
Power
Supply
Voltage
RESET
