MAX691AD Ver la hoja de datos (PDF) - Maxim Integrated
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MAX691AD Datasheet PDF : 16 Pages
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Microprocessor Supervisory Circuits
ELECTRICAL CHARACTERISTICS (continued)
(MAX691A, MAX800L: VCC = +4.75V to +5.5V, MAX693A, MAX800M: VCC = +4.5V to +5.5V, VBATT = 2.8V, TA = TMIN to TMAX,
unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
Battery Switchover
Hysteresis
60
mV
BATT ON Output
Low Voltage
BATT ON Output
Short-Circuit Current
ISINK = 3.2mA
ISINK = 25mA
Sink current
Source current
0.1
0.4
V
0.7
1.5
60
mA
1
15
100
µA
RESET AND WATCHDOG TIMER
MAX691A, MAX800L
4.50
4.65
4.75
Reset Threshold Voltage
Reset Threshold Hysteresis
MAX693A, MAX800M
MAX800L, TA = +25°C, VCC falling
MAX800M, TA = +25°C, VCC falling
4.25
4.40
4.50
V
4.55
4.70
4.30
4.45
15
mV
VCC to RESET Delay
Power-down
LOW LINE-to-RESET Delay
80
µs
800
ns
Reset Active Timeout Period,
Internal Oscillator
Power-up
140
200
280
ms
Reset Active Timeout Period,
External Clock (Note 4)
Power-up
2048
Clock
Cycles
Watchdog Timeout Period,
Internal Oscillator
Watchdog Timeout Period,
External Clock (Note 4)
Long period
Short period
Long period
Short period
1.0
1.6
2.25
sec
70
100
140
ms
4096
1024
Clock
Cycles
Minimum Watchdog Input
Pulse Width
VIL = 0.8V, VIH = 0.75 x VCC
100
ns
RESET Output Voltage
–RESET Output Short-Circuit
Current
ISINK = 50µA, VCC = 1V, VBATT = 0V, VCC falling
ISINK = 3.2mA, VCC = 4.25V
ISOURCE = 1.6mA, VCC = 5V
Output source current
0.004
0.3
0.1
0.4
V
3.5
7
20
mA
RESET Output Voltage Low
(Note 5)
ISINK = 3.2mA
0.1
0.4
V
LOW LINE Output Voltage
LOW LINE Output
Short-Circuit Current
ISINK = 3.2mA, VCC = 4.25V
ISOURCE = 1µA, VCC = 5V
Output source current
0.4
V
3.5
1
15
100
µA
WDO Output Voltage
WDO Output
Short-Circuit Current
ISINK = 3.2mA
ISOURCE = 500µA, VCC = 5V
Output source current
0.4
V
3.5
3
10
mA
WDI Threshold Voltage
(Note 6)
WDI Input Current
VIH
VIL
WDI = 0V
WDI = VOUT
0.75 x VCC
-50
-10
20
V
0.8
µA
50
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