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MAX691A Datasheet(PDF) 4 Page - Maxim Integrated Products

Part No. MAX691A
Description  Microprocessor Supervisory Circuits
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX691A Datasheet(HTML) 4 Page - Maxim Integrated Products

 
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Microprocessor Supervisory Circuits
4
_______________________________________________________________________________________
MAX69_AC/AE/AM, VCC = 5V
µA
0.10
±5
OSC IN Leakage Current
µs
12
RESET-to-CE OUT Delay
2.7
CE OUT Output Voltage High
(Reset Active)
3.5
ns
6
10
CE IN-to-CE OUT Propagation
Delay (Note 8)
mA
0.1
0.75
2.0
CE OUT Short-Circuit Current
(Reset Active)
75
150
CE IN-to-CE OUT Resistance
(Note 7)
µA
±0.005
±1
CE IN Leakage Current
60
PFI-to-PFO Delay
µs
25
µA
1
15
100
PFO Output Short-Circuit
Current
MAX800_C/E, VCC = 5V
CONDITIONS
3.5
PFO Output Voltage
V
0.4
nA
±0.01
±25
PFI Leakage Current
1.225
1.25
1.275
PFI Input Threshold
V
1.2
1.25
1.3
UNITS
MIN
TYP
MAX
PARAMETER
OSC SEL = 0V
Power-down
VCC = 0V, VBATT = 2.8V, IOUT = 1µA
VCC = 5V, IOUT = -100µA
50
Ω source impedance driver, CLOAD = 50pF
Disable mode,
CE OUT = 0V
Enable mode
Disable mode
ISOURCE = 1µA, VCC = 5V
ISINK = 3.2mA
VIN = 20mV, VOD = 15mV
VIN = -20mV, VOD = 15mV
Output source current
Note 1: Either VCC or VBATT can go to 0V, if the other is greater than 2.0V.
Note 2: The supply current drawn by the MAX691A/MAX800L/MAX800M from the battery excluding IOUT typically goes to 10µA
when (VBATT - 1V) < VCC < VBATT. In most applications, this is a brief period as VCC falls through this region.
Note 3: “+” = battery-discharging current, “--” = battery-charging current.
Note 4: Although presented as typical values, the number of clock cycles for the reset and watchdog timeout periods are fixed and
do not vary with process or temperature.
Note 5: RESET is an open-drain output and sinks current only.
Note 6: WDI is internally connected to a voltage divider between VOUT and GND. If unconnected, WDI is driven to 1.6V (typ),
disabling the watchdog function.
Note 7: The chip-enable resistance is tested with VCC = +4.75V for the MAX691A/MAX800L and VCC = +4.5V for the
MAX693A/MAX800M. CE IN = CE OUT = VCC / 2.
Note 8: The chip-enable propagation delay is measured from the 50% point at CE IN to the 50% point at CE OUT.
ELECTRICAL CHARACTERISTICS (continued)
(MAX691A, MAX800L: VCC = +4.75V to +5.5V, MAX693A, MAX800M: VCC = +4.5V to +5.5V, VBATT = 2.8V, TA = TMIN to TMAX,
unless otherwise noted.)
kHz
50
OSC IN Frequency Range
µA
10
100
OSC SEL Input Pull-Up Current
µA
10
100
OSC IN Input Pull-Up Current
OSC SEL = 0V
OSC SEL = 0V
OSC SEL = VOUT or floating, OSC IN = 0V
V
VOUT - 0.3
VOUT - 0.6
VIH
3.65
2.00
OSC IN External Oscillator
Threshold Voltage
VIL
kHz
100
OSC IN Frequency with
External Capacitor
OSC SEL = 0V, COSC = 47pF
V
POWER-FAIL COMPARATOR
CHIP-ENABLE GATING
INTERNAL OSCILLATOR


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