MAX6369 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX6369 Datasheet PDF : 8 Pages
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Pin-Selectable Watchdog Timers
ABSOLUTE MAXIMUM RATINGS
Terminal Voltage (with respect to GND)
VCC .....................................................................-0.3V to +6V
WDI.....................................................................-0.3V to +6V
WDO (Open Drain: MAX6369/71/73) .................-0.3V to +6V
WDO (Push-Pull: MAX6370/72/74 .......-0.3V to (VCC + 0.3V)
SET0, SET1, SET2 ................................-0.3V to (VCC + 0.3V)
Maximum Current, Any Pin (input/output)...........................20mA
Continuous Power Dissipation (TA = +70°C)
SOT23-8 (derate 8.75mW/°C above +70°C)...............700mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
VCC Rise or Fall Rate......................................................0.05V/µs
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +2.5V to +5.5V, SET_ = VCC or GND, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C and
VCC = +3V.) (Note 1)
PARAMETER
Operating Voltage Range
Supply Current
Input High Voltage
Input Low Voltage
Logic Input Current (Note 2)
WDO Output Low
Voltage
SYMBOL
VCC
ICC
VIH
VIL
VOL
CONDITIONS
No load
WDI, SET0, SET1, SET2
WDI, SET0, SET1,
SET2
VCC ≥ 3.3V
VCC ≥ 2.5V
WDI or SET_ = 0 or VCC
ISINK = 1.2mA, VCC > 2.7V, watchdog
output asserted
ISINK = 6mA, VCC > 4.5V, watchdog
output asserted
MIN
2.5
0.8 × VCC
TYP
8
0
MAX
5.5
20
0.8
0.6
±10
UNITS
V
µA
V
V
nA
0.3
V
0.4
V
WDO Leakage Current
ILKG
V NDO = 0 to +5.5V, output deasserted,
MAX6369/MAX6371/MAX6373
1
µA
WDO Output High
Voltage
MAX6369/MAX6370
Startup Delay Period
ISOURCE = 500µA, VCC > 2.7V, watchdog
output deasserted
0.8 × VCC
VOH
V
ISOURCE = 800µA, VCC > 4.5V, watchdog
output deasserted
VCC - 1.5
tDELAY
SET2 = 0, SET1 = 0, SET0 = 0
SET2 = 0, SET1 = 0, SET0 = VCC
SET2 = 0, SET1 = VCC, SET0 = 0
SET2 = 0, SET1 = VCC, SET0 = VCC
SET2 = VCC, SET1 = 0, SET0 = 0
SET2 = VCC, SET1 = 0, SET0 = VCC
SET2 = VCC, SET1 = VCC, SET0 = 0
SET2 = VCC, SET1 = VCC, SET0 = VCC
1
3
10
30
ms
30
90
Watchdog Disabled
100
300
ms
1
3
10
30
s
60
180
2 _______________________________________________________________________________________
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