Datasheet

MAX6887/MAX6888
Hex/Quad, Power-Supply Supervisory Circuits
10 ______________________________________________________________________________________
OVERVOLTAGE
THRESHOLD
PRIMARY
THRESHOLD
OV
RESET
V
IN
t
OP
t
RP
Figure 2. Output Timing Diagram
WDO
WDI
*t
WDI
IS THE INITIAL WATCHDOG TIMER PERIOD
t
RP
*t
WDI
*t
WDI
t
WD
t
D-PO
RESET
V
CC
OR IN1–IN4
WDO NOT CONNECTED TO MR
2.5V
WDO
WDI
.
t
RP
*t
WDI
t
WD
t
RP
*t
DWI
t
D-PO
RESET
V
CC
OR IN1–IN4
WDO CONNECTED TO MR
2.5V
Figure 3. Watchdog, Reset, and Power-Up Timing Diagram