MAX795 查看數據表（PDF） - Maxim Integrated
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MAX795 Datasheet PDF : 20 Pages
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3.0V/3.3V Adjustable Microprocessor
Supervisory Circuits
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 3.17V to 5.5V for the MAX793T/MAX795T, VCC = 3.02V to 5.5V for the MAX793S/MAX795S, VCC = 2.72V to 5.5V for the
MAX793R/MAX794/MAX795R, VBATT = 3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
Reset Threshold (Note 8)
VRST
VCC falling
VCC rising
RESET IN Threshold
(MAX794 only)
RESET IN Leakage Current
(MAX794 only)
VRST IN
VCC falling
VCC rising
CONDITIONS
MAX793T/MAX795T
MAX793S/MAX795S
MAX793R/MAX795R
MAX793T/MAX795T
MAX793S/MAX795S
MAX793R/MAX795R
MIN
3.00
2.85
2.55
3.00
2.85
2.55
1.212
1.212
-25
TYP
3.075
2.925
2.625
3.085
2.935
2.635
1.240
1.250
2
MAX
3.15
3.00
2.70
3.17
3.02
2.72
1.262
1.282
UNITS
V
V
25
nA
Reset Timeout Period
tRP
VCC < 3.6V
140
200
280
ms
LOWLINE-to-Reset
Threshold, (VLOWLINE -
VRST), VCC Falling
Low-Line Comparator
Hysteresis
LOWLINE Threshold,
VCC Rising
PFI Input Threshold
PFI Input Current
PFI Hysteresis, PFI Rising
MAX793
VLR
MAX794
MAX793
MAX794
MAX793T/MAX795T
MAX793S/MAX795S
VLL
MAX793R/MAX795R
MAX794
VTH
VPFI falling
VPFI rising
30
5
1.212
1.212
-25
45
15
10
10
1.240
1.250
2
10
60
mV
25
mV
mV
3.23
3.08
V
2.78
1.317
1.262
V
1.287
25
nA
20
mV
BATT OK Threshold
(MAX793)
VBOK
2.00
2.25
2.50
V
INPUT AND OUTPUT LEVELS
RESET Output-Voltage High VOH ISOURCE = 300µA, VCC = VRST min
0.8VCC
0.86VCC
V
BATT OK, BATT ON, WDO,
LOWLINE Output-Voltage
VOH ISOURCE = 300µA, VCC = VRST max
0.8VCC
0.86VCC
V
High
PFO Output-Voltage High
VOH ISOURCE = 65µA, VCC = VRST max
0.8VCC
V
BATT ON Output-
Voltage High
VOH ISOURCE = 100µA, VCC = 2.3V, VBATT = 3V 0.8VBATT
V
RESET Output Leakage
Current (Note 9)
PFO Output Short to GND
Current
ILEAK VCC = VRST max
ISC
VCC = 3.3V, V PFO = 0V
-1
-1
µA
180
500
µA
PFO, RESET, RESET, WDO,
LOWLINE Output-Voltage
VOL
Low
ISINK = 1.2mA; RESET, LOWLINE tested
with VCC = VRST min; RESET, BATTOK,
WDO tested with VCC = VRST max
0.08
0.2VCC V
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