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MAX817L Datasheet(PDF) 4 Page - Maxim Integrated Products

Part No. MAX817L
Description  5V Microprocessor Supervisory Circuits
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX817L Datasheet(HTML) 4 Page - Maxim Integrated Products

 
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+5V Microprocessor Supervisory Circuits
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +4.75V to +5.5V for MAX81_L, VCC = +4.5V to +5.5V for MAX81_M, VBATT = 2.8V, TA = TMIN to TMAX, unless otherwise
noted. Typical values are at TA = +25°C.)
Power-down
VCC = 5V
IOUT = -1µA, VCC = 0V, VBATT = 2.8V
IOUT = -100µA, VCC = 0V
Enable mode
Disable mode
CONDITIONS
µs
15
RESET to CE OUT Delay
3.5
VIL
CE OUT Input Threshold
V
0.8
VIH
V
2.7
VOH
CE OUT Output
VCC - 1V
40
150
CE IN to CE OUT Resistance
(Note 6)
µA
±0.005
±1
CE IN Leakage Current
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
Note 2: Either VCC or VBATT can go to 0V if the other is greater than 2.0V.
Note 3: “-” = battery-charging current, “+” = battery-discharging current.
Note 4: WDI is internally serviced within the watchdog timeout period if WDI is left unconnected.
Note 5: WDI input is designed to be driven by a three-stated output device. To float WDI, the “high-impedance mode” of the output
device must have a maximum leakage current of 10µA and a maximum output capacitance of 200pF. The output device
must also be able to source and sink at least 200µA when active.
Note 6: The chip-enable resistance is tested with VCC = +4.75V for the MAX818L and VCC = +4.5V for the MAX818M.
V CE IN = V CE OUT = VCC/2.
Note 7: The chip-enable propagation delay is measured from the 50% point at
CE IN to the 50% point at CE OUT.
Disable mode,
CE OUT = 0V
mA
0.1
0.75
2.0
CE OUT Short-Circuit Current
(Reset Active)
50
Ω source impedance driver, CLOAD = 50pF
ns
38
CE IN to CE OUT Propagation
Delay (Note 7)
CHIP-ENABLE GATING (MAX818 only)


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