Datasheet

MAX6365–MAX6368
SOT23, Low-Power µP Supervisory Circuits
with Battery Backup and Chip-Enable Gating
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.4V to +5.5V, V
BATT
= +3.0V, CE IN = V
CC
, reset not asserted, T
A
= -40°C to +85°C. Typical values are at T
A
= +25°C,
unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Reset Active Timeout Period t
RP
150 280 ms
I
SINK
= 1.6mA,
V
CC
> 2.1V
0.3
V
OL
Reset asserted,
V
BATT
= 0V
I
SINK
= 100µA,
V
CC
> 1.2V
0.4
RESET Output Voltage
V
OH
Reset not asserted
(MAX636_L only)
I
SOURCE
= 500µA,
V
CC
> V
TH(MAX)
0.8
✕
V
CC
V
V
OL
Reset not asserted
I
SINK
= 1.6mA,
V
CC
> V
TH (MAX)
0.3
I
SOURCE
= 1mA,
V
CC
> 1.8V
0.7
✕
V
CC
RESET Output Voltage
V
OH
Reset not asserted,
V
BATT
= 0V
(MAX636_H only)
(Note 3)
I
SOURCE
= 200µA,
V
CC
> 1.2V
0.8
✕
V
CC
V
RE S E T Outp ut Leakag e C ur r ent I
LKG
MAX636_P and MAX636_H only 1 µA
MANUAL RESET (MAX6365 only)
V
IL
0.3
✕
V
CC
MR Input Voltage
V
IH
0.7
✕
V
CC
V
Pullup Resistance 20 kΩ
Minimum Pulse Width 1µs
Glitch Immunity V
CC
= 3.3V 100 ns
MR to Reset Delay V
CC
= 3.3V 120 ns
WATCHDOG (MAX6366 only)
Watchdog Timeout Period t
WD
1.00 1.65 2.25 s
Minimum WDI Input Pulse Width t
WDI
100 ns
V
IL
0.3
✕
V
CC
WDI Input Voltage
V
IH
0.7
✕
V
CC
V
WDI Input Current -1.0 1.0 µA
BATT ON (MAX6367 only)
Output Voltage V
OL
I
SINK
= 3.2mA, V
BATT
= 2.1V 0.4 V
Sink current, V
CC
= 5V 60 mA
Output Short-Circuit Current
Source current, V
BATT
> 2V 10 30 100 µA