Datasheet

PIN
NAME FUNCTION
MAX6701(A)
MAX6702(A)
MAX6703(A)
MAX6704
MAX6705(A)
MAX6706(A)
MAX6707(A)
MAX6708
1 1 1 1 MR
Active-Low, Manual Reset Input, Internal 50kΩ Pullup
to V
CC
. Pull low to force a reset. Reset remains active
as long as MR is low and the reset timeout period after
MR goes high. Leave unconnected or connect to V
CC
if
unused. WDO deasserts when MR is low (MAX6701(A)/
MAX6702(A)/MAX6703(A)/ MAX6705(A)/ MAX6706(A)/
MAX6707(A) only)
2 2 2 2 V
CC
Supply Voltage for MAX6701–MAX6708 and Input for
Primary Reset Threshold Monitor. Push-pull outputs are
powered by V
CC
.
3 3 3 3 GND Ground
— 4 4 4 PFI
Power-Fail Voltage Monitor Input. High-impedance
input for internal power-fail comparator. Connect this
pin to an external resistive-divider network to set the
reset threshold voltage; 0.62V (typ) threshold. Connect
to GND or V
CC
when not used.
— 5 5 5 PFO
Power-Fail Monitor Output. Open drain or push-pull
active low. PFO goes low when PFI is less than 0.62V.
6 6 6 — WDI
Watchdog Input. If WDI remains high or low for longer
than the watchdog timeout period, the internal watchdog
timer runs out and WDO is asserted. WDO is asserted
low after each watchdog overflow and remains low until
the watchdog timer is cleared (the reset output is not
affected). The internal watchdog timer clears whenever
a V
CC
/RST_IN1/RST_IN2 reset is asserted, the manual
reset is asserted, or WDI sees a rising or falling edge.
The watchdog timer remains cleared until the reset output
is deasserted. On the MAX6704, RESET pulse asserts
for the reset timeout period after each watchdog timeout
overflow. The watchdog timer cannot be disabled.
— — — 6 N.C. No Connection. Not internally connected.
7 7 7 7 RESET
Active-Low Reset Output (Open Drain or Push-Pull).
RESET changes from high to low when the V
CC
input
drops below the selected reset threshold (or RST_IN1/
RST_IN2 for the MAX6701(A)/MAX6702(A)/MAX6703(A),
MR is pulled low, or the watchdog triggers a reset
(MAX6704 only). RESET remains low for the reset timeout
period after the reset conditions are terminated.
www.maximintegrated.com
Maxim Integrated │ 5
MAX6701-08/
MAX6701A-03A/
MAX6705A-07A
Low-Voltage, SOT23 µP Supervisors with Power-Fail
In/Out, Manual Reset, and Watchdog Timer
Pin Description