Datasheet

(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
V
CC
TO RESET DELAY
MAX6443/52 toc08
TIME (100µs/div)
V
CC
(100mV/div)
RESET
(2V/div)
V
CC
= 4.5V
V
CC
= 4.3V
V
TH
= 4.392V
MANUAL RESET TO RESET DELAY
(MAX6445L/MAX6446L/MAX6449L/MAX6450L)
MAX6443/52 toc07
TIME (1s/div)
MR1
(5V/div)
MR2
(5V/div)
RESET
(5V/div)
V
CC
= 5V
RSTIN TO RESET DELAY
vs. TEMPERATURE (RSTIN FALLING)
MAX6443/52 toc06
TEMPERATURE (°C)
RSTIN TO RESET DELAY (µs)
603510-15
20.4
20.8
21.2
21.6
22.0
22.4
22.8
23.2
23.6
24.0
20.0
-40 85
RSTIN FALLING AT 1mV/µs
V
CC
TO RESET DELAY
vs. TEMPERATURE
MAX6443/52 toc05
TEMPERATURE (°C)
V
CC
TO RESET DELAY (µs)
603510-15
20.4
20.8
21.2
21.6
22.0
22.4
22.8
23.2
23.6
24.0
20.0
-40 85
V
CC
= FALLING AT 1mV/µs
N ORMALIZED V
CC
RESET THRESHOLD
vs. TEMPERATURE
MAX6443/52 toc04
TEMPERATURE (°C)
NORMALIZED V
CC
RESET THRESHOLD
603510-15
0.98
0.99
1.00
1.01
1.02
1.03
0.97
-40 85
MAXIMUM TRANSIENT DURATION
vs. RESET THRESHOLD OVERDRIVE
MAX6443/52 toc03
RESET THRESHOLD OVERDRIVE (mV)
TRANSIENT DURATION (µs)
800600400200
50
100
150
200
250
0
0 1000
V
TH
= 4.4V
RESET OCCURS
ABOVE THE CURVE
NORMALIZED RESET TIMEOUT PERIOD
vs. TEMPERATURE
MAX6443/52 toc02
TEMPERATURE (°C)
NORMALIZED TIMEOUT PERIOD
603510-15
0.96
0.97
0.98
0.99
1.00
1.01
1.02
1.03
1.04
1.05
0.95
-40 85
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX6443/52 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
5.04.53.5 4.02.0 2.5 3.01.5
1
2
3
4
5
6
7
8
9
0
1.0 5.5
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C
MAX6443–MAX6452 µP Reset Circuits with Long Manual Reset
Setup Period
Maxim Integrated │ 4
www.maximintegrated.com
Typical Operating Characteristics