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MAX793T Datasheet

  • MAX793T

  • 3.0V/3.3V可调、微处理器监控电路, 微处理器监控电路, 提供备用...

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  • 20页

  • MAXIM

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3.0V/3.3V Adjustable Microprocessor
Supervisory Circuits
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3.17V to 5.5V for the MAX793T/MAX795T, V
CC
= 3.02V to 5.5V for the MAX793S/MAX795S, V
CC
= 2.72V to 5.5V for the
MAX793R/MAX794/MAX795R, V
BATT
= 3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25掳C.)
PARAMETER
SYMBOL
V
CC
Falling
Reset Threshold (Note 8)
V
RST
V
CC
Rising
RESET IN Threshold
(MAX794 only)
RESET IN Leakage Current
(MAX794 only)
Reset Timeout Period
LOWLINE-to-Reset
Threshold, (V
LOWLINE
-
V
RST
), V
CC
Falling
Low-Line Comparator
Hysteresis
LOWLINE Threshold,
V
CC
Rising
t
RP
V
LR
V
CC
< 3.6V
MAX793
MAX794
MAX793
MAX794
MAX793T/MAX795T
V
LL
MAX793S/MAX795S
MAX793R/MAX795R
MAX794
PFI Input Threshold
PFI Input Current
PFI Hysteresis, PFI Rising
BATT OK Threshold
(MAX793)
INPUT AND OUTPUT LEVELS
RESET Output Voltage High
BATT OK, BATT ON, WDO,
LOWLINE Output Voltage
High
PFO Output Voltage High
BATT ON Output
Voltage High
RESET Output Leakage
Current (Note 9)
PFO Output Short to GND
Current
PFO, RESET, RESET, WDO,
LOWLINE Output Voltage
Low
V
OH
V
OH
V
OH
V
OH
I
LEAK
I
SC
I
SOURCE
=300碌A, V
CC
= V
RST
min
I
SOURCE
= 300碌A, V
CC
= V
RST
max
I
SOURCE
= 65碌A, V
CC
= V
RST
max
I
SOURCE
= 100碌A, V
CC
= 2.3V, V
BATT
= 3V
V
CC
= V
RST
max
V
CC
= 3.3V, V
PFO
= 0V
I
SINK
= 1.2mA; RESET, LOWLINE tested
with V
CC
= V
RST
min; RESET, BATTOK,
WDO tested with V
CC
= V
RST
max
0.8V
CC
0.8V
CC
0.8V
CC
0.8V
BATT
-1
180
-1
500
0.86V
CC
0.86V
CC
V
V
V
V
碌A
碌A
V
BOK
2.00
V
TH
V
PFI
falling
V
PFI
rising
1.212
1.212
-25
1.240
1.250
2
10
2.25
V
CC
Falling
V
CC
Rising
CONDITIONS
MAX793T/MAX795T
MAX793S/MAX795S
MAX793R/MAX795R
MAX793T/MAX795T
MAX793S/MAX795S
MAX793R/MAX795R
V
RST IN
MIN
3.00
2.85
2.55
3.00
2.85
2.55
1.212
1.212
-25
140
30
5
TYP
3.075
2.925
2.625
3.085
2.935
2.635
1.240
1.250
2
200
45
15
10
10
3.23
3.08
2.78
1.317
1.262
1.287
25
20
2.50
V
nA
mV
V
V
MAX
3.15
3.00
2.70
3.17
3.02
2.72
1.262
1.282
25
280
60
25
mV
mV
V
nA
ms
mV
V
UNITS
MAX793/MAX794/MAX795
V
OL
0.08
0.2V
CC
V
_______________________________________________________________________________________
3

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