Datasheet

MAX6361–MAX6364
SOT23, Low-Power µP Supervisory Circuits
with Battery Backup
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.4V to +5.5V, V
BATT
= 3V, T
A
= -40°C to +85°C, reset not asserted. Typical values are at T
A
= +25°C, unless otherwise
noted.) (Note 1)
Note 1: All devices are 100% production tested at T
A
= +25°C. Limits over temperature are guaranteed by design.
Note 2: V
BATT
can be 0V anytime or V
CC
can go down to 0V if V
BATT
is active (except at startup).
PARAMETER SYMBOL MIN TYP MAX UNITSCONDITIONS
Output Voltage V
OL
0.4
V
Output Short-Circuit Current
60
mA
I
SINK
= 3.2mA, V
BATT
= 2.1V
Sink current, V
CC
= 5V
RESET Output Voltage V
OL
0.3
V
MR Input Voltage
0.7

V
CC
V
Pull-Up Resistance
20
kΩ
Minimum Pulse Width
1
µs
Glitch Immunity
100
ns
MR to Reset Delay
120
ns
Reset not asserted
V
CC
= 3.3V
V
CC
= 3.3V
RESET Output Voltage
V
OL
0.3
V
Reset asserted,
V
BATT
= 0V
Input Threshold
1.185 1.235 1.285
V
RESET IN Leakage Current ±0.01 ±25 nA
1.5 µsOverdrive voltage = 50mV, RESET IN fallingRESET IN to Reset Delay
10 30 100
µASource current, V
BATT
≥ 2V
V
IH
V
IL
0.3

V
CC
V
OH
0.8

V
CC
Reset not asserted
(MAX636_L only)
I
SOURCE
= 500µA,
V
CC
≥ V
TH(MAX)
0.4
I
SINK
= 100µA,
V
CC
≥ 1.2V
I
SINK
= 1.6mA,
V
CC
≥ 2.1V
RESET, RESET Output Leakage
Current
I
LK
1
µAMAX636_P, MAX636_H only
I
SINK
= 1.6mA,
V
CC
≥ V
TH(MAX)
Minimum WDI Input Pulse Width t
WDI
100
ns
Input Voltage
V
IL
0.3

V
CC
V
Watchdog Timeout Period t
WD
1.00 1.60 2.25
s
MANUAL RESET (MAX6361 only)
BATT ON (MAX6363 only)
RESET IN (MAX6364 only)
WATCHDOG INPUT (MAX6362 only)
V
IH
0.7

V
CC