Low-Voltage, SOT23 µP Supervisors with Power-
Fail In/Out, Manual Reset, and Watchdog Timer
MAX6701(A)
MAX6704
MAX6705(A)
MAX6708
RESET
R1 (100kΩ)
0.9V
3.3V
VCC
RESET
(RESET)
PFI
MAX6704– MR
MAX6708 PFO
I/O CORE
SUPPLY SUPPLY
RESET
µP
Figure 9. RESET Valid to Ground Circuit
() ARE FOR MAX6704/MAX6706(A)/MAX6708 ONLY.
Figure 10. Monitoring Other System Voltages
Selector Guide
PART
RESET
PP LOW
RESET
PP HIGH
RESET
OD-LOW
WDI
WDO
PFI,
PFO
RST_IN1,
RST_IN2
MAX6701
✔
—
—
✔
✔ PP
—
✔
MAX6701A*
✔
—
—
✔
✔ PP
—
✔
MAX6702
—
✔
—
✔
✔ PP
—
✔
MAX6702A*
—
✔
—
✔
✔ PP
—
✔
MAX6703
—
—
✔
✔
✔ OD
—
✔
MAX6703A*
—
—
✔
✔
✔ OD
—
✔
MAX6704
✔
✔
—
✔
—
✔ PP
—
MAX6705
✔
—
—
✔
✔ PP
✔ PP
—
MAX6705A*
✔
—
—
✔
✔ PP
✔ PP
—
MAX6706
—
✔
—
✔
✔ PP
✔ PP
—
MAX6706A*
—
✔
—
✔
✔ PP
✔ PP
—
MAX6707
—
—
✔
✔
✔ OD
✔ OD
—
MAX6707A*
—
—
✔
✔
✔ OD
✔ OD
—
MAX6708
✔
✔
—
—
—
✔ PP
—
PP = push-pull, OD = open drain.
*WDO deasserts when MR is pulled low. See the Standard- vs. A-Version Comparison section for the differences on WDO.
Threshold Suffix Guide
SUFFIX
L
M
T
S
R
Z
Y
Bold indicates standard version.
RESET
THRESHOLD (V)
4.63
4.38
3.08
2.93
2.63
2.32
2.19
10 ______________________________________________________________________________________