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MAX6854/MAX6855/MAX6856/MAX6858/MAX6860–MAX6869
Nanopower P Supervisory Circuits with
Manual Reset and Watchdog Timer
10
______________________________________________________________________________________
MAX6854
MAX6855
MAX6856
MAX6858
MAX6860–
MAX6869
VCC
WDI
(MAX6864–MAX6869)
RESET
(MAX6854/MAX6856/MAX6858/
MAX6860/MAX6861
MAX6863/MAX6864/MAX6866/
MAX6867/MAX6869)
MR
(MAX6854/MAX6855/MAX6856/
MAX6861–MAX6869)
RESET
TIMEOUT
GENERATOR
RESET
(MAX6855/MAX6862/MAX6865/
MAX6868)
CT
(MAX6861/MAX6862/MAX6863)
1.25V
10k
WATCHDOG
TIMER
GND
WATCHDOG
TRANSITION
DETECTOR
Figure 1. Functional Diagram
VCC
RESET*
*RESET IS THE INVERSE OF RESET.
MR
VTH
tRP
tMRD
tRP
tRD
tMPW
Figure 2. RESET Timing Relationship