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MAX6854/MAX6855/MAX6856/MAX6858/MAX6860–MAX6869
Nanopower P Supervisory Circuits with
Manual Reset and Watchdog Timer
_______________________________________________________________________________________
5
OUTPUT LOW VOLTAGE
vs. SINK CURRENT
MAX6854
toc08
ISINK (
A)
V
OL
(V)
4000
3000
2000
1000
0.05
0.10
0.15
0.20
0.25
0.30
0
05000
VCC = 1.8V
VCC = 3.3V
VCC = 2.5V
OUTPUT HIGH VOLTAGE
vs. SOURCE CURRENT
MAX6854
toc09
ISOURCE (
A)
OUTPUT
HIGH
VOLTAGE
(V
CC
-
V
OH
)(V)
800
600
400
200
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0
1000
VCC = 1.8V
VCC = 3.3V
VCC = 2.5V
SUPPLY CURRENT vs. WATCHDOG
SWITCHING FREQUENCY
MAX6854
toc10
WATCHDOG SWITCHING FREQUENCY (Hz)
SUPPLY
CURRENT
(
A)
1M
100k
10k
1k
100
1
10
100
0.1
10
10M
VCC = 2.5V
VCC TO RESET DELAY
MAX6854 toc11
10
s/div
200mV/div
1.7V
1.5V
VCC
RESET
0
1V/div
VTH = 1.575V
tRD
MANUAL RESET DELAY
MAX6854 toc12
200ns/div
1V/div
MR
RESET
1V/div
tMRD
Typical Operating Characteristics (continued)
(VCC = +2.5V, TA = +25°C, unless otherwise noted.)