MAX821(1999) 查看數據表（PDF） - Maxim Integrated
零件编号
产品描述 (功能)
生产厂家
MAX821
(Rev.:1999)
(Rev.:1999)
Maxim Integrated
MAX821 Datasheet PDF : 8 Pages
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4-Pin µP Voltage Monitors with Pin-Selectable
Power-On Reset Timeout Delay
____________________________Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
MAX82_R/S/T POWER-DOWN RESET DELAY
vs. TEMPERATURE
45
40
35
VCC FALLING AT 1mV/µs
30
25
20
15
VCC FALLING AT 10mV/µs
10
5
0
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
MAX82_L/M POWER-DOWN RESET DELAY
vs. TEMPERATURE
60
VCC FALLING AT 1mV/µs
50
40
30
20
VCC FALLING AT 10mV/µs
10
0
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
NORMALIZED SUPPLY
CURRENT vs. TEMPERATURE
1.10
1.05
NORMALIZED RESET THRESHOLD
vs. TEMPERATURE
1.003
1.002
1.001
1.00
1.000
0.999
0.95
0.998
0.90
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
0.997
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
______________________________________________________________Pin Description
PIN
MAX821 MAX822
1
1
2
–
–
2
3
3
4
4
NAME
GND
RESET
RESET
SRT
VCC
FUNCTION
Ground
Active-Low Reset Output. RESET is low while VCC is below the reset threshold. It remains
low for the reset timeout period after the reset condition is terminated. The reset timeout
period is determined by the SRT input.
Active-High Reset Output. RESET is high while VCC is below the reset threshold. It remains
high for the reset timeout period after the reset condition is terminated. The reset timeout
period is determined by the SRT input.
Set Reset Timeout Input. Connect to GND for 1ms (max) delay; connect to VCC for 20ms
(min) delay; leave unconnected for 100ms (min) delay.
Supply Voltage
4 _______________________________________________________________________________________
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