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FM812 Datasheet(PDF) 3 Page - Fairchild Semiconductor

Part # FM812
Description  Microprocessor Reset Circuits
Download  6 Pages
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FM812 Datasheet(HTML) 3 Page - Fairchild Semiconductor

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FM811/812
REV. 1.5.1 7/15/02
3
Absolute Maximum Ratings
Stresses above those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent device failure. Functionality at or
above these limits is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability.
Operating ranges define those limits between which the functionality of the device is guaranteed.
Electrical Characteristics
VCC = 5V for FM81_L/M/J, VCC = 3.3V for FM81_S/T, VCC = 3V for FM81_R, TA = Operating Temperature Range,
unless otherwise noted.
Parameter
Symbol
Ratings
Units
Terminal Voltage
VCC
-0.3 to 6.0
V
MR
-0.3 to (VCC + 0.3)
V
Input Current
VCC, MR
20
mA
Output Current
RESET, RESET
20
mA
Rate of Rise
VCC
100
V/µs
Operating Temperature Range
TA
-40 to +85
˚C
Storage Temperature Range
-65 to +150
˚C
Lead Temperature Range
300
˚C
Power Dissipation (TA = +70˚C)
320
mW
Parameter
Conditions
Min.
Typ.
Max.
Units
Operating Voltage Range
TA = 0˚C to 70˚C
TA = -40˚C to 85˚C
1.4
1.6
5.5
5.5
V
Supply Current, ICC
FM811L/M/J, FM812L/M/J
VCC < 3.6V, FM811R/S/T, FM812R/S/T
9
6
15
10
µA
Reset Voltage Threshold,
VTH
FM811L, FM812L
FM811M, FM812M
FM811J, FM812J
FM811T, FM812T
FM811S, FM812S
FM811R, FM812R
4.40
4.18
3.90
2.97
2.79
2.49
4.63
4.38
4.00
3.08
2.93
2.63
4.86
4.52
4.18
3.19
3.00
2.70
V
Reset Time-out Period, tR
140
240
560
ms
RESET Output Voltage, VOH ISOURCE = 800µA, FM811L/M/J
ISOURCE = 500µA, FM811R/S/T
VCC - 1.5
0.8 x VCC
V
RESET Output Voltage, VOL VCC= VTH Min., ISINK = 3.2mA, FM811L/M/J
VCC= VTH Min., ISINK = 1.2mA, FM811R/S/T
VCC > 1.4V, ISINK = 50µA, TA= 0˚C to 70˚C
VCC > 1.6V, ISINK = 50µA, TA= -40˚C to
85˚C
0.4
0.3
0.3
0.3
V
RESET Output Voltage, VOH 1.8V < VCC < VTH Min., ISOURCE = 150µA
0.8 x VCC
V
RESET Output Voltage, VOL ISINK = 3.2mA, FM810L/M/J
ISINK = 1.2mA, FM810R/S/T
0.4
0.35
V
MR Minimum Pulse Width
10
µs
MR to Reset Delay
0.5
µs
MR Input Threshold, VIH
VCC > VTH Max., FM81_L/M/J
FM81_R/S/T
2.3
0.7 x VCC
V
MR Input Threshold, VIL
VCC > VTH Max., FM81_L/M/J
FM81_R/S/T
0.8
0.25xVCC
MR Pull-Up Resistance
10
20
30
k
MR Glitch Immunity
100
ns


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