Datasheet

PIN
NAME FUNCTION
MAX700 MAX701 MAX702
1 1 1 MR
Input for Manual Pushbutton Reset. Has internal 5µA pullup. Low input activates the
RESET/RESET outputs.
2 — — SENSE
The voltage-sense input when CTL = V
CC
. Its threshold is 1.29V. SENSE always
remains connected to the internal comparator. So, when V
CC
is being monitored
internally (CTL = GND), SENSE should be left open circuit.
3 — — HYST
Normally NOT used when voltage is monitored through V
CC
(CTL = GND). When
monitoring through SENSE (CTL = V
CC
), HYST allows hysteresis to be added,
reducing noise and spurious reset activity (Figure 3). HYST turns on 5µs before the
RESET/RESET outputs are activated, and its on-resistance to GND is typically 1kΩ.
4 4 3 GND Ground
5 6 7
RESET
Goes low when V
CC
falls below 4.65V, or when CTL = V
CC
on the MAX700 goes low
when SENSE falls below 1.29V.
6 5 — RESET
Inverted Version of RESET
7 — — CTL
When CTL = GND, V
CC
is monitored by the reset circuit. When CTL = V
CC
, V
CC
is ignored and SENSE is monitored, allowing the threshold to be set with external
resistors.
8 8 2 V
CC
Chip Power and +5V Sensing Input (When CTL = GND on MAX700)
— 2, 3, 7 4, 5, 6, 8 N.C. No Connection
MAX700/MAX701/MAX702 Power-Supply Monitor with Reset
www.maximintegrated.com
Maxim Integrated │ 4
Pin Description