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MAX6854 Datasheet(PDF) 3 Page - Maxim Integrated Products

Part No. MAX6854
Description  Nanopower uP Supervisory Circuits with Manual Reset and Watchdog Timer
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX6854 Datasheet(HTML) 3 Page - Maxim Integrated Products

 
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Nanopower µP Supervisory Circuits with
Manual Reset and Watchdog Timer
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 1.2V to 5.5V, TA = -40°C to +85°C, unless otherwise specified. Typical values are at VCC = 2.5V, TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
VCC ≥ 1.1V, ISOURCE = 10µA,
RESET asserted, TA ≥ 0°C
0.8 x VCC
VCC ≥ 1.2V, ISOURCE = 10µA,
RESET asserted
0.8 x VCC
VCC ≥ 1.53V, ISOURCE = 200µA,
RESET asserted
0.8 x VCC
VOH
VCC ≥ 2.12V, ISOURCE = 500µA,
RESET asserted
0.8 x VCC
VCC ≥ 1.71V, ISINK = 500µA,
RESET deasserted
0.3
RESET Output Voltage
VOL
VCC ≥ 2.38V, ISINK = 1.2mA,
RESET deasserted
0.3
V
CT Input Current
CT = GND or VCC
20
nA
VIH
0.8 x VCC
CT Input Voltage
VIL
0.2 x VCC
V
MANUAL RESET INPUT
VIH
0.7 x VCC
MR Input Voltage
VIL
0.3 x VCC
V
MR Minimum Pulse Width
tMPW
1µs
MR Glitch Rejection
200
ns
MR to Reset Delay
tMRD
250
ns
MR Pullup Resistance
510
20
k
WATCHDOG TIMER (MAX6864–MAX6869)
VIH
0.7 x VCC
WDI Input Voltage
VIL
0.3 x VCC
V
WDI Input Current
WDI = GND or VCC
20
nA
WDI Pulse Width
tWDI
(Note 3)
150
ns
S
1.5
3.3
7.75
Watchdog Timeout Period
tWD
L95
209
487
s
Note 1: Devices are tested at TA = +25°C. Specifications for TA = -40°C to +85°C are guaranteed by design.
Note 2: For the MAX6864–MAX6869, the watchdog period is 1s with tRISE and tFALL < 50ns.
Note 3: Guaranteed by design.


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