UM809_15 Datasheet, PDF (5/14 Pages) Union Semiconductor, Inc. – 3-Pin Microprocessor Reset Circuits

UM809/810
3.8
3.6
UM809LS Vth=4.63V
3.4
UM809RS Vth=2.63V
UM809RP Vth=2.63V
3.2
UM809SP Vth=2.93V
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE(V)
Figure 3. Supply Current vs Supply Voltage
3.6
3.4
UM810SS Vth=2.93V
UM810RS Vth=2.63V
3.2
UM810MS Vth=4.38V
3.0
UM810TS Vth=3.08V
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
SUPPLY VOLTAGE(uA)
Figure 4. Supply Current vs Supply Voltage
100
VOD=VTH-VCC
VOD=10mV
80
60
VOD=20mV
40
20
VOD=200mV
0
-40
-20
VOD=100mV
0
20
40
60
85
TEMPERATURE(^oC)
Figure 5. Power-Down Reset Delay vs
Temperature and Overdrive(UM8xxR/S/T)
140
VOD=VTH-VCC
120
VOD=10mV
100
80
VOD=20mV
60
40
20
0
-40
VOD=200mV
-20
VOD=100mV
0
20
40
60
85
TEMPERATURE(^oC)
Figure 6. Power-Down Reset Delay vs
Temperature and Overdrive(UM8xxL/M/J)
250
245
UM8XXL/M/J
240
UM8XXR/S/T
235
230
225
-40
-20
0
20
40
60
85
TEMPERATURE(^oC)
Figure 7. Power-Up Reset Timeout vs
Temperature
1.003
1.002
1.001
1.000
0.999
0.998
0.997
-40
-20
0
20
40
60
85
TEMPERATURE(^oC)
Figure 8. Normalized Reset Threshold vs
Temperature
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http://www.union-ic.com Rev.06 Apr.2015
5/14