5-Pin µP Supervisory Circuits with
Watchdog and Manual Reset
__________________________________________Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
MAX6316/MAX6317/MAX6319/MAX6320/MAX6322
MANUAL RESET TO RESET
MAX6316/MAX6317/MAX6318/MAX6320/MAX6321
V
FALLING TO RESET PROPAGATION
DELAY vs. TEMPERATURE
CC
SUPPLY CURRENT vs. TEMPERATURE
PROPAGATION DELAY vs. TEMPERATURE
10
320
100
90
80
70
60
50
40
30
20
10
0
V
V
FALLING AT 1mV/ s
V
CC
= 5V
CC
9
300
280
260
240
220
200
180
160
140
- V = 100mV
RST
CC
V
= 5V
CC
8
7
6
5
4
V
V
= 3V
= 1V
CC
CC
3
2
1
0
-40 -20
0
20
40
60
80 100
-40 -20
0
20
40
60
80 100
-40 -20
0
20
40
60
80 100
TEMPERATURE ( C)
TEMPERATURE ( C)
TEMPERATURE ( C)
MAX6316/MAX6317/MAX6318/MAX6320/MAX6321
NORMALIZED WATCHDOG TIMEOUT
PERIOD vs. TEMPERATURE
1.05
NORMALIZED RESET TIMEOUT
PERIOD vs. TEMPERATURE
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
-40 -20
0
20
40
60
80 100
-40 -20
0
20
40
60
80 100
TEMPERATURE ( C)
TEMPERATURE ( C)
MAX6316M/6318MH/6319MH
BIDIRECTIONAL
MAXIMUM V TRANSIENT DURATION
CC
vs. RESET THRESHOLD OVERDRIVE
PULLUP CHARACTERISTICS
MAX6316toc07
80
70
60
+5V
4.7k
PASSIVE
4.7k
PULLUP
2V/div
RESET OCCURS ABOVE LINES
74HC05
V
= 3.3V
RST
100pF
INPUT
V
= 4.63V
RST
V
50
40
30
20
10
0
RESET, ACTIVE
PULLUP
+5V
VCC
RESET
2V/div
= 2.63V
74HC05
100pF
RST
INPUT
RESET
INPUT
5V/div
GND
MR
200ns/div
10
100
1000
CC
RESET THRESHOLD OVERDRIVE (mV) V - V
RST
4
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