MAX6452 Maxim Integrated Products, MAX6452 Datasheet - Page 4

• Manufacturer Part Number: MAX6452
• Description: (MAX6443 - MAX6452) uP Reset Circuits
• Manufacturer: Maxim Integrated Products

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µP Reset Circuits with Long Manual Reset
Setup Period
(V
4
CC
1.03
1.02
1.01
1.00
0.99
0.98
0.97
_______________________________________________________________________________________
= 3.3V, T
9
8
7
6
5
4
3
2
1
0
1.0
-40
NORMALIZED V
T
1.5
A
= +25°C
-15
2.0 2.5 3.0
A
vs. SUPPLY VOLTAGE
vs. TEMPERATURE
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
10
CC
T
T
A
RESET THRESHOLD
A
= +85°C
= -40°C
3.5 4.0
(MAX6445/MAX6446/MAX6449/MAX6450)
35
MANUAL RESET TO RESET DELAY
4.5
60
5.0
5.5
TIME (1s/div)
85
24.0
23.6
23.2
22.8
22.4
22.0
21.6
21.2
20.8
20.4
20.0
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
V
CC
-40
-40
= 5V
MAX6443/52 toc07
NORMALIZED RESET TIMEOUT PERIOD
V
CC
-15
= FALLING AT 1mV/µs
-15
V
CC
vs. TEMPERATURE
vs. TEMPERATURE
MR1
(5V/div)
MR2
(5V/div)
RESET
(5V/div)
TEMPERATURE (°C)
TEMPERATURE (°C)
TO RESET DELAY
10
10
Typical Operating Characteristics
35
35
60
V
60
CC
= 4.5V
V
CC
85
85
TIME (100µs/div)
TO RESET DELAY
24.0
23.6
23.2
22.8
22.4
22.0
21.6
21.2
20.8
20.4
20.0
250
200
150
100
50
V
0
TH
-40
0
= 4.392V
vs. TEMPERATURE (RSTIN FALLING)
vs. RESET THRESHOLD OVERDRIVE
MAXIMUM TRANSIENT DURATION
RSTIN FALLING AT 1mV/µs
V
RESET OCCURS
ABOVE THE CURVE
MAX6443/52 toc08
CC
RESET THRESHOLD OVERDRIVE (mV)
200
= 4.3V
-15
RSTIN TO RESET DELAY
TEMPERATURE (°C)
400
V
10
RESET
(2V/div)
CC
(100mV/div)
600
35
V
TH
= 4.4V
800
60
1000
85