MAX16021 Maxim Integrated Products, MAX16021 Datasheet - Page 4

• Manufacturer Part Number: MAX16021
• Description: (MAX160xx) Low-Power uP Supervisory Circuits
• Manufacturer: Maxim Integrated Products

www.DataSheet4U.com
Low-Power µP Supervisory Circuits with
Battery-Backup Circuit and Chip-Enable Gating
ELECTRICAL CHARACTERISTICS (continued)
(V
4
WATCHDOG TIMER (WDI, WDO)
Watchdog Timeout Period
Minimum WDI Input Pulse Width
WDI Input Low Voltage
WDI Input High Voltage
WDI Input Current (Note 7)
WDO Output Low Voltage
WDO Output High Voltage
(Push-Pull Output)
WDO Leakage Current
(Open-Drain Output)
BATTERY-ON INDICATOR (BATTON)
Output Low Voltage
BATTON Leakage Current
BATTON Output High Voltage
Output Short-Circuit Current
(Note 4)
CE GATING (CEIN, CEOUT)
CEIN Leakage Current
CEIN to CEOUT Resistance
CEOUT Short-Circuit Current
CEIN to CEOUT Propagation
Delay
Output High Voltage
Reset to CEOUT Delay
CC
_______________________________________________________________________________________
= 1.53V to 5.5V, V
PARAMETER
BATT
= 3V, T
A
SYMBOL
= -40°C to +85°C, unless otherwise noted. Typical values are at T
t
V
V
V
V
t
V
WDI
V
WD
OH
OH
OL
OL
IH
IL
(Note 6)
(Note 6)
V
V
asserted
V
deasserted
V
I
V
V
BATTON asserted
Sink current, V
Reset asserted, V
Reset not asserted (Note 5)
Reset asserted, CEOUT = 0,
V
50Ω source, C
V
V
SINK
WDI
CC
CC
WDO
BATTON
CC
CC
CC
CC
= 1.1 x V
= 1.1 x V
= 0.9 x V
= 0.9 x V
= 5V, V
= 0V, V
= 0 or 5.5V, time average
= 3.2mA, V
= 5.5V, WDO deasserted
= 5.5V
CC
BATT
TH
TH
TH
TH
CONDITIONS
CC
LOAD
≥ V
, I
, I
, I
BATT
≥ 2.2V I
CC
= 5V
SINK
SOURCE
SOURCE
BATT
= 50pF, V
= 0.9 x V
= 2.1V
= 1mA, WDO
, I
SOURCE
SOURCE
= 100µA, WDO
= 100µA,
TH
CC
or 0V
= 1µA
= 4.75V
= 100µA
V
V
V
0.7 x
0.8 x
- 0.3
- 0.3
BATT
MIN
0.83
V
V
320
0.1
OUT
OUT
-1
-1
CC
CC
-
A
= +25°C.) (Note 2)
1.235
TYP
0.75
1.5
60
12
8
MAX
0.3 x
1.64
V
0.3
+1
0.3
+1
50
CC
1
1
2
7
UNITS
mA
mA
µA
µA
µA
µA
ns
ns
µs
Ω
V
V
V
V
V
V
V
s