MAX821 データシートの表示（PDF） - Maxim Integrated
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MAX821 Datasheet PDF : 7 Pages
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4-Pin µP Voltage Monitors with Pin-Selectable
Power-On Reset Timeout Delay
ELECTRICAL CHARACTERISTICS (continued)
(VCC = full range, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
SRT Input Capacitance
(Note 3) (see Setting
the Reset Timeout Delay
section)
Internal
MAX821L/M/P only, ISINK = 3.2mA,
VCC = VTH(MIN)
RESET Output Voltage
(MAX821)
MAX821R/S/T/U only, ISINK = 1.2mA,
VCC = VTH(MIN)
VOL
TA = 0°C to +70°C,
ISINK = 50µA
VCC ≥ 1V
TA = -40°C to +85°C,
VCC ≥ 1.2V
VOH
MAX821L/M/P only, ISOURCE = 800µA,
VCC ≥ VTH(MAX)
MAX821R/S/T/U only, ISOURCE = 500µA,
VCC ≥ VTH(MAX)
RESET Output Voltage
(MAX822)
MAX822L/M only, ISINK = 3.2mA,
VCC = VTH(MAX)
VOL
MAX822R/S/T only, ISINK = 1.2mA,
VCC = VTH(MAX)
VOH ISOURCE = 150µA, 1.4V ≤ VCC ≤ VTH(MIN)
Note 1: RESET output for MAX821; RESET output for MAX822.
Note 2: During reset active timeout period only.
Note 3: Guaranteed by design.
VCC -1.5
0.8VCC
0.8VCC
MAX
20
0.4
0.3
0.3
0.3
0.4
0.3
UNITS
pF
V
V
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
RESET TIMEOUT PERIOD
vs. TEMPERATURE
1.0
SRT = GND
0.9
RESET TIMEOUT PERIOD
vs. TEMPERATURE
36
SRT = VCC
35
34
RESET TIMEOUT PERIOD
vs. TEMPERATURE
180
SRT = UNCONNECTED
175
170
0.8
33
165
0.7
0.6
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
32
31
30
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
160
155
150
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
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