Datasheet

MAX801L/M/N, MAX808L/M/N
8-Pin µP Supervisory Circuits
with ±1.5% Reset Accuracy
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 4.6V to 5.5V for the MAX80_L, V
CC
= 4.5V to 5.5V for the MAX80_N, V
CC
= 4.35V to 5.5V for the MAX80_M; V
BATT
= 2.8V;
T
A
= T
MIN
to T
MAX
. Typical values are at V
CC
= 5V and T
A
= +25°C, unless otherwise noted.)
V
CC
rising
and falling
V
CC
rising
V
CC
falling at 1mV/µs
I
SINK
= 50µA,
V
BATT
= 0V,
V
CC
falling
V
CC
falling at 1mV/µs
MAX80_M
V
CC
falling
MAX80_L
MAX80_N
CONDITIONS
0.1 0.4
RESET Output Voltage
0.3
0.3
V
4.350 4.425 4.500
V
RST
Reset Threshold
ms140 200 280t
RP
RESET Active Timeout
Period
µs17t
LL
V
CC
to LOWLINE Delay
µs17t
RD
V
CC
to RESET Delay
V
4.48 4.56
V
LL
LOWLINE Threshold,
V
CC
Rising
mV13Reset-Threshold Hysteresis
mV30 52 70V
LR
LOWLINE to RESET
Threshold Voltage
4.73 4.81
4.63 4.71
UNITSMIN TYP MAXSYMBOLPARAMETER
MAX80_L
MAX80_N 4.500 4.575 4.650
4.600 4.675 4.750
MAX80_M
I
SOURCE
= 0.1mA V
CC
- 1.5 V
CC
- 0.1
V
I
SINK
= 3.2mA
I
SOURCE
= 5mA, V
CC
= 4.25V
0.4
V
V
CC
- 1.5
RESET Output Voltage
(MAX801)
Output sink current
Output source current, V
CC
= 4.25V
I
SINK
= 3.2mA, V
CC
= 4.25V
I
SOURCE
= 5mA, V
CC
= 4.25V
0.4
V
V
CC
- 1.5
LOWLINE Output Voltage
55
mA
15
I
SC
RESET Output Short-
Circuit Current (MAX801)
Output sink current, V
CC
= 4.25V
Output source current
40
mA
20
I
SC
LOWLINE Output
Short-Circuit Current
V
CC
= 1.0V, MAX80_C
V
CC
= 1.2V, MAX80_E/M
I
SINK
= 3.2mA, V
CC
= 4.25V
Output sink current, V
CC
= 4.25V
Output source current
40
mA
1.6
I
SC
RESET Output
Short-Circuit Current
1.12 1.6 2.24 sec
0.75 x V
CC
t
WD
Watchdog Timeout Period
V
IH
V
RESET deasserted, WDI = 0V
0.8
-50 -10
V
IL
WDI Threshold Voltage
(Note 4)
µA
RESET deasserted, WDI = V
CC
16 50
WDI Input Current
V
IL
= 0.8V, V
IH
= 0.75V x V
CC
100 ns
Minimum Watchdog Input
Pulse Width
RESET AND LOW-LINE
WATCHDOG TIMER (MAX801)