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MAX691AC Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX691AC Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 16 page Microprocessor Supervisory Circuits _______________________________________________________________________________________ 3 MAX691A, MAX800L mA 7 20 – RESET Output Short-Circuit Current V 3.5 RESET Output Voltage 0.1 0.4 0.004 0.3 ns 100 Minimum Watchdog Input Pulse Width Clock Cycles 1024 Watchdog Timeout Period, External Clock (Note 4) 4096 ms 70 100 140 Watchdog Timeout Period, Internal Oscillator 1.0 1.6 2.25 Clock Cycles 2048 Reset Active Timeout Period, External Clock (Note 4) ms 140 200 280 Reset Active Timeout Period, Internal Oscillator ns 800 LOW LINE-to-RESET Delay µs 80 VCC to RESET Delay MAX693A, MAX800M CONDITIONS mV 15 Reset Threshold Hysteresis V 4.30 4.45 Reset Threshold Voltage 4.55 4.70 4.25 4.40 4.50 4.50 4.65 4.75 UNITS MIN TYP MAX PARAMETER Output source current ISOURCE = 1.6mA, VCC = 5V ISINK = 3.2mA, VCC = 4.25V ISINK = 50µA, VCC = 1V, VBATT = 0V, VCC falling VIL = 0.8V, VIH = 0.75 x VCC Short period Long period Short period Long period MAX800M, TA = +25°C, VCC falling Power-up Power-up MAX800L, TA = +25°C, VCC falling Power-down 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.) RESET Output Voltage Low (Note 5) ISINK = 3.2mA 0.1 0.4 V ISINK = 3.2mA, VCC = 4.25V 0.4 LOW LINE Output Voltage ISOURCE = 1µA, VCC = 5V 3.5 V LOW LINE Output Short-Circuit Current Output source current 1 15 100 µA ISINK = 3.2mA 0.4 WDO Output Voltage ISOURCE = 500µA, VCC = 5V 3.5 V WDO Output Short-Circuit Current Output source current 3 10 mA VIH 0.75 x VCC WDI Threshold Voltage (Note 6) VIL 0.8 V WDI = 0V -50 -10 WDI Input Current WDI = VOUT 20 50 µA sec mV 60 Battery Switchover Hysteresis ISINK = 25mA V 0.7 1.5 BATT ON Output Low Voltage ISINK = 3.2mA 0.1 0.4 Source current µA 1 15 100 BATT ON Output Short-Circuit Current Sink current mA 60 RESET AND WATCHDOG TIMER |
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