UM809 Datasheet, PDF (6/15 Pages) Union Semiconductor, Inc. – 3-Pin Microprocessor Reset Circuits

UM809/810
3.8
3.6
UM809LS Vth=4.6V
3.4
UM809RS Vth=2.6V
UM809RP Vth=2.6V
3.2
UM809SP Vth=2.9V
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=2.9V
UM810RS Vth=2.6V
3.2
UM810MS Vth=4.4V
3.0
UM810TS Vth=3.1V
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
TEMPERATURE(^oC)
Figure 7. Power-Up Reset Timeout vs
Temperature
1.003
1.002
1.001
1.000
0.999
0.998
85
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.04 Dec.2013
6/15