Microprocessor and Nonvolatile
Memory Supervisory Circuits
MAX792/MAX820
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
INTERNAL-MODE RESET THRESHOLD
vs. TEMPERATURE (NORMALIZED)
MAX792-6
REF OUT VOLTAGE
vs. TEMPERATURE
MAX792-7
CHIP-ENABLE ON-RESISTANCE
vs. TEMPERATURE
180
160
ON-RESISTANCE (Ω)
140
120
100
80
60
40
V
CC
= 5V
V
CE IN
= 2.5V
V
CC
= 3V
V
CE IN
= 1.5V
MAX792-8
1.125
1.100
1.075
RESET THRESHOLD
1.050
1.025
1.000
0.975
0.950
0.925
0.900
-60
THE RESET THRESHOLD IS SHOWN
NORMALIZED TO 1, REPRESENTING
ALL AVAILABLE MAX792/MAX820
-30
0
30
60
90
120
1.33
1.32
1.31
REF OUT (V)
1.30
1.29
1.28
1.27
1.26
1.25
RESET IN / INT = 0V
-60
-30
0
30
60
90
120
200
20
0
150
-60
-30
0
30
60
90
120
150
150
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
WATCHDOG TIMEOUT PERIOD
vs. SWT LOAD CAPACITANCE
MAX792-10
CHIP-ENABLE PROPAGATION DELAY
vs. CE OUT LOAD CAPACITANCE
V
CC
= +5V
V
CE IN
= 0V TO 5V
DRIVER SOURCE
IMPEDANCE = 50Ω
MAX792-11
100k
WATCHDOG TIMEOUT PERIOD (ms)
20
PROPAGATION DELAY (ns)
1m
10k
15
1k
V
CC
= 5V
V
CC
= 3V
10
100
5
10
1n
10n
C
SWT
(F)
100n
0
0
25 50 75 100 125 150 175 200 225 250
C
LOAD
(pF)
6
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
