Datasheet

ns
MAX791
Microprocessor Supervisory Circuit
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 4.75V to 5.5V, VBATT = 2.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
0.7 1.5I
SINK
= 25mA
mA720Output source current
–
W
—
D
—
P
—
O
–
Output
Short-Circuit Current
V
0.1 0.4I
SINK
= 3.2mA
BATT ON Output
Low Voltage
ms104.7nF capacitor connected from SWT to GND
Minimum Watchdog
Timeout Period
ms1
–
W
—
D
—
P
—
O
–
Pulse Width
ns100V
IL
= 0.8V, V
IH
= 0.75 x V
CC
Minimum Watchdog Input
Pulse Width
µs80Power downV
CC
-to-
–
L
—
O
—
W
— —
L
—
I
—
N
—
E
–
Delay
s1.0 1.6 2.25SWT connected to V
OUT
V4.50 4.65 4.75
–
R
—
E
—
S
—
E
—
T
–
Threshold Voltage
mV150
–
L
—
O
—
W
— —
L
—
I
—
N
—
E
–
-to-
–
R
—
E
—
S
—
E
—
T
–
Threshold Voltage
µs100Power downV
CC
-to-
–
R
—
E
—
S
—
E
—
T
–
Delay
mV15
–
R
—
E
—
S
—
E
—
T
–
Threshold Hysteresis
Watchdog Timeout Period
ns70
–
W
—
D
—
P
—
O
–
-to-
–
W
—
D
—
O
–
Delay
µA
ms
115100Source current
BATT ON Output
Short-Circuit Current
mA60Sink current
140 200 280Power up
UNITSMIN TYP MAX
–
R
—
E
—
S
—
E
—
T
–
Active Timeout Period
CONDITIONSPARAMETER
0.004 0.3MAX791E/M, I
SINK
= 50µA, V
CC
= 1.2V, V
CC
falling
0.1 0.4I
SINK
= 3.2mA, V
CC
= 4.25V
V
3.5I
SOURCE
= 1.6mA, V
CC
= 5V
–
R
—
E
—
S
—
E
—
T
–
Output Voltage
mA720Output source current
–
R
—
E
—
S
—
E
—
T
–
Output
Short-Circuit Current
0.4I
SINK
= 3.2mA, V
CC
= 4.25V
µA15 100Output source current
–
L
—
O
—
W
— —
L
—
I
—
N
—
E
–
Output
Short-Circuit Current
V
3.5I
SOURCE
= 1µA, V
CC
= 5V
–
L
—
O
—
W
— —
L
—
I
—
N
—
E
–
Output Voltage
0.4I
SINK
= 3.2mA
mA310Output source current
–
W
—
D
—
O
–
Output Short-Circuit Current
V
3.5I
SOURCE
= 500µA, V
CC
= 5V
–
W
—
D
—
O
–
Output Voltage
0.4I
SINK
= 3.2mA
V
3.5I
SOURCE
= 1mA
–
W
—
D
—
P
—
O
–
Output Voltage
0.004 0.3MAX791C, I
SINK
= 50µA, V
CC
= 1.0V, V
CC
falling
RESET, LOW-LINE, AND WATCHDOG TIMER