Datasheet

MAX793/MAX794/MAX795
3.0V/3.3V Adjustable Microprocessor
Supervisory Circuits
6 _______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
1.242
1.241
1.240
1.239
1.238
1.237
1.236
30
25
20
15
10
5
0
-40 100
MAX794
RESET IN THRESHOLD AND LOWLINE-TO-RESET IN
THRESHOLD vs. TEMPERATURE
TEMPERATURE (°C)
RESET IN THRESHOLD (V)
LOWLINE-TO-RESET IN THRESHOLD (mV)
20-20 0 8040 60
V
LOWLINE
- V
RST
V
RESET IN
V
CC
FALLING
MAX793 TOC10
2.5
2.0
1.5
1.0
0.5
0
-40 100
MAX793
BATT OK THRESHOLD vs. TEMPERATURE
MAX793 TOC11
TEMPERATURE (°C)
BATT OK THRESHOLD (V)
20-20 0 8040 60
V
BATT
FALLING
60
50
40
30
20
10
0
-40 100
CE IN-TO-CE OUT ON-RESISTANCE
vs. TEMPERATURE
TEMPERATURE (°C)
CE IN-TO-CE OUT ON-RESISTANCE (Ω)
20-20 0 8040 60
V
CC
= V
RST
MAX
MAX793 TOC12
1.70
1.65
1.60
1.55
1.50
-40 100
MAX793/MAX794
WATCHDOG TIMEOUT PERIOD
vs. TEMPERATURE
MAX793 TOC13
TEMPERATURE (°C)
WATCHDOG TIMEOUT PERIOD (sec)
20-20 0 8040 60
20
15
10
5
0
-40 100
MAX793/MAX794
BATTERY FRESHNESS SEAL
LEAKAGE CURRENT vs. TEMPERATURE
MAX793 TOC14
TEMPERATURE (°C)
LEAKAGE CURRENT (nA)
20-20 0 8040 60
V
BATT
= 5.5V
V
CC
= 0V
V
OUT
= 0V
1.002
1.001
1.000
0.999
0.998
0.997
0.996
-40 100
RESET THRESHOLD
vs. TEMPERATURE (NORMALIZED)
MAX793 TOC15
TEMPERATURE (°C)
V
RST
(NORMALIZED)
20-20 0 8040 60
V
CC
FALLING
10
8
6
4
2
0
-40 100
MAX793/MAX794
PFI TO PFO PROPAGATION DELAY
vs. TEMPERATURE
MAX793 TOC16
TEMPERATURE (°C)
PROPAGATION DELAY (µs)
20-20 0 8040 60
V
PFI
FALLING
20mV OVERDRIVE