MAX6746 Maxim, MAX6746 Datasheet - Page 4

• Manufacturer Part Number: MAX6746
• Description: UP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay
• Manufacturer: Maxim

µP Reset Circuits with Capacitor-Adjustable
Reset/Watchdog Timeout Delay
(V
4
CC
10,000
1000
1.20
1.15
1.10
1.05
1.00
0.95
0.90
_______________________________________________________________________________________
100
0.1
10
= +5V, T
6
5
4
3
2
1
0
1
-50
-50
100
NORMALIZED RESET TIMEOUT PERIOD
RESET TIMEOUT PERIOD vs. C
-25
-25
A
= +25°C, unless otherwise noted.)
vs. TEMPERATURE
V
SUPPLY CURRENT
vs. TEMPERATURE
0
CC
0
1000
TEMPERATURE (°C)
TEMPERATURE (°C)
= 5V
25
V
25
C
CC
SRT
C
= 3.3V
(pF)
SRT
50
50
C
= 100pF
10,000
SRT
75
75
= 1500pF
V
CC
= 1.8V
100
100
SRT
100,000
125
125
100,000
10,000
1000
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
1.010
1.008
1.004
1.002
1.000
0.996
0.994
0.992
0.990
100
1.006
0.998
0.1
10
1
NORMALIZED WATCHDOG TIMEOUT PERIOD
100
NORMALIZED RESET IN THRESHOLD VOLTAGE
-50
WATCHDOG TIMEOUT PERIOD vs. C
-50
MAX6746–MAX6751
V
CC
EXTENDED MODE
-25
-25
= 5V
vs. TEMPERATURE
0
1000
vs. TEMPERATURE
TEMPERATURE (°C)
0
TEMPERATURE (°C)
C
25
SWT
25
(pF)
C
SWT
50
Typical Operating Characteristics
NORMAL MODE
50
10,000
C
= 100pF
SWT
75
75
= 1500pF
100
100
SWT
100,000
125
125
1.240
1.239
1.238
1.237
1.236
1.235
175
150
125
100
75
50
25
0
5
6
4
3
2
1
0
0
1
1
vs. RESET THRESHOLD OVERDRIVE
MAXIMUM TRANSIENT DURATION
RESET OCCURS
ABOVE THE CURVE
RESET THRESHOLD OVERDRIVE (mV)
200
2
2
RESET IN THRESHOLD
vs. SUPPLY VOLTAGE
vs. SUPPLY VOLTAGE
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
400
3
3
600
4
4
V
TH
= 2.92V
800
5
5
1000
6
6