MAX6332_05 Datasheet, PDF (3/6 Pages) Maxim Integrated Products – 3-Pin, Ultra-Low-Voltage, Low-Power uP Reset Circuits

3-Pin, Ultra-Low-Voltage, Low-Power
µP Reset Circuits
(Reset not asserted, T_A = +25°C, unless otherwise noted.)
Typical Operating Characteristics
SUPPLY CURRENT vs. TEMPERATURE
4.0
3.8
3.6
3.4
3.2 _{VCC = 2.5V}
3.0
2.8 VCC = 1.8V
2.6
2.4
2.2
RESET NOT ASSERTED
2.0
-60 -40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
NORMALIZED RESET TIMEOUT PERIOD
vs. TEMPERATURE
1.050
1.040 ^VTH ^{= 2.2V}
1.030
1.020
1.010
1.000
0.990
0.980
0.970
0.960
0.950
-60 -40 -20 0 20 40 60
TEMPERATURE (°C)
80 100
80
70
60
50
40
30
20
10
0
0.5
OUTPUT VOLTAGE LOW
vs. SUPPLY VOLTAGE
V_TH = 2.5V
I_SINK = 500µA
RESET ASSERTED
T_A = +25°C
T_A = +85°C
T_A = -40°C
1.00 1.50 2.00 2.50 3.00
V_CC (V)
OUTPUT VOLTAGE HIGH
vs. SUPPLY VOLTAGE
160
140
V_TH = 2.2V
ISOURCE = 100µA
120
RESET ASSERTED
100
80
60
T_A = +25°C
40
T_A = -40°C
20
T_A = +85°C
0
0.5 0.75 1.0 1.25 1.5 1.75 2.0 2.25 2.5
V_CC (V)
MAXIMUM TRANSIENT DURATION
vs. RESET COMPARATOR OVERDRIVE
600
500
400
300
RESET OCCURS
200
RESET DOES
100
NOT OCCUR
0
0.1
1
10
100
1000
RESET COMPARATOR OVERDRIVE (mV)
V_CC FALLING PROPAGATION DELAY
vs. TEMPERATURE
80
70
60
50
V_CC FALLING AT 1V/ms
40
30
V_CC FALLING AT 10V/ms
20
10
-60 -40 -20 0 20 40 60
TEMPERATURE (°C)
80 100
Pin Description
PIN
MAX6332
1
MAX6333
MAX6334
1
—
2
2
—
3
3
NAME
GND
RESET
RESET
V_CC
FUNCTION
Ground
Active-Low Reset Output. RESET remains low while V_CC is below the reset
threshold and for a reset timeout period (t_RP) after V_CC rises above the
reset threshold. RESET on the MAX6334 is open-drain.
Active-High Reset Output. RESET remains high while V_CC is below the
reset threshold and for a reset timeout period (t_RP) after V_CC rises above
the reset threshold.
Supply Voltage (0.7V to 5.5V)
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