+3V Voltage Monitoring, Low-Cost µP
Supervisory Circuits
MAX706P/R/S/T, MAX706AP/AR/AS/AT, MAX708R/S/T
ELECTRICAL CHARACTERISTICS (continued)
(MAX70_P/R, MAX706AP/AR: V
CC
= 2.7V to 5.5V; MAX70_S, MAX706AS: V
CC
= 3.0V to 5.5V; MAX70_T, MAX706AT: V
CC
= 3.15V to
5.5V; T
J
= T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
J
= T
A
= +25°C.) (Note 2)
PARAMETER
WATCHDOG OUTPUT
V
OH
WDO
Output Voltage
(MAX706_, MAX706A_)
V
OL
V
OH
V
OL
MANUAL RESET INPUT
V
RST(MAX)
< V
CC
< 3.6V
4.5V < V
CC
<
5.5V
MR
Pulse Width
t
MR
V
IL
MR
Input Threshold
V
IH
V
IL
V
IH
MR
to Reset Output Delay
POWER-FAILURE COMPARATOR
(MAX70_P/R, MAX706AP/AR) PFI falling
V
CC
= 3.0V
(MAX70_S/T, MAX706AS/AT) PFI falling,
V
CC
= 3.3V
PFI Input Current
V
OH
PFO
Output Voltage
V
OL
V
OH
V
OL
V
RST(MAX)
< V
CC
< 3.6V I
SOURCE
= 500µA
V
RST(MAX)
< V
CC
< 3.6V I
SINK
= 1.2mA
4.5V < V
CC
< 5.5V
4.5V < V
CC
< 5.5V
I
SOURCE
= 800µA
I
SINK
= 3.2mA
V
CC
-
1.5
0.4
1.20
1.20
-25
0.8 x
V
CC
0.3
V
1.25
1.25
+0.01
1.30
V
1.30
+25
nA
t
MD
V
RST(MAX)
< V
CC
< 3.6V
4.5V < V
CC
< 5.5V
V
RST(MAX)
< V
CC
< 3.6V
V
RST(MAX)
< V
CC
< 3.6V
4.5V < V
CC
< 5.5V
4.5V < V
CC
< 5.5V
V
RST(MAX)
< V
CC
< 3.6V
4.5V < V
CC
< 5.5V
2.0
750
250
ns
0.7 x
V
CC
0.8
25
100
500
150
0.6
V
70
250
250
µA
600
ns
V
RST(MAX)
< V
CC
< 3.6V I
SOURCE
= 500µA
V
RST(MAX)
< V
CC
< 3.6V I
SINK
= 500µA
4.5V < V
CC
< 5.5V
4.5V < V
CC
< 5.5V
I
SOURCE
= 800µA
I
SINK
= 1.2mA
V
CC
-
1.5
0.4
0.8 x
V
CC
0.3
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MR
Pullup Current
MR
= 0
PFI Input Threshold
Note 2:
All devices 100% production tested at T
A
= +85°C. Limits over temperature are guaranteed by design.
Note 3:
Applies to both
RESET
in the MAX70_R/S/T and MAX706AR/AS/AT, and RESET in the MAX706P/MAX706AP.
4
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
