MAX16997AAUA+ Maxim Integrated Products, MAX16997AAUA+ Datasheet - Page 10

• Manufacturer Part Number: MAX16997AAUA+
• Description: IC TIMER WATCHDOG 8-UMAX
• Manufacturer: Maxim Integrated Products
• Type: Watchdog Circuitr

Specifications of MAX16997AAUA+

• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: Adjustable/Selectable
• Voltage - Threshold: Adjustable/Selectable
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

High-Voltage Watchdog Timers with
Adjustable Timeout Delay
Figure 5. Power-On Reset and Power-Down Reset for the MAX16998A/B/D
Figure 6. Detailed Power-Up Sequence for the MAX16998A/B/D
10
V
ENABLE
RESETIN
V
V
V
RESET
RESETIN
______________________________________________________________________________________
V
IN
RESET
PON
V
WDI
= V
IN
ENABLE
t = 0
V
V
PON
IN
t
RESET
= 1.1V
t
CW
t
t
WDI
OW
t
t
WDI
WP
V
t
CW
IN
= 1.1V
t
WDI
≤ t
WDI
t
WDI
≤ t
WP
t
WDI
V
HYST
t
WDI
WDI
t
WP
OUTSIDE THE OPEN WINDOW, OR A COMBINATION OF ANY RESET
THE THREE CONSECUTIVE RESET COULD BE CAUSED BY THREE
TIMEOUTS AS SHOWN HERE OR BY THREE WDI FALLING EDGE
V
HYST
CONDITIONS EXCEPT V
t
RESET
STARTS COUNTING
WDT CLEARS AND
FROM O
t
WP
RESETIN
t
RESET
RESET
DROPS TOO LOW.
t
WP
t
RESET
t
RESET
t
WDI
t
WDI
t
CW
≤ t
WDI
≤ t
WP