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MAX6303ESA Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX6303ESA Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 12 page +5V, Low-Power µP Supervisory Circuits with Adjustable Reset/Watchdog _______________________________________________________________________________________ 3 10,000 0 0.001 0.01 0.1 1 10 100 1000 RESET TIMEOUT PERIOD vs. CSRT 1 CSRT (nF) 10 100 1000 VCC = 5V 10,000 0 0.001 0.01 0.1 1 10 100 1000 EXTENDED-MODE WATCHDOG TIMEOUT PERIOD vs. CSWT (WDS = VCC) 1 CSWT (nF) 10 100 1000 VCC = 5V 10,000 0.1 0.001 0.01 0.1 1 10 100 1000 NORMAL-MODE WATCHDOG TIMEOUT PERIOD vs. CSWT (WDS = GND) 1 CSWT (nF) 10 100 1000 VCC = 5V CONDITIONS VCC = 4.5V to 5.5V 0.7VCC VIL 30 tWP WDI Pulse Width WDI, WDS Input Threshold VCC = 2V to 4.5V 60 ns VIH ms 0.3VCC V WDI, WDS Leakage Current Extended mode disabled ±1 µA UNITS MIN TYP MAX SYMBOL PARAMETER WDI Sink/Source Current (Note 4) Extended mode enabled ±70 µA tWD WDS = GND, CSWT = 1500pF 2.8 4.0 5.2 Watchdog Timeout Period (Note 3) WDS = VCC, CSWT = 1500pF 1.4 2.0 2.6 sec ELECTRICAL CHARACTERISTICS (continued) (VCC = +2V to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) WATCHDOG TIMER Note 1: Reset is guaranteed valid from the selected reset threshold voltage down to the minimum VCC. Note 2: VDS = VCC, WDI unconnected. Note 3: Precision timing currents of 500nA are present at both the SRT and SWT pins. Timing capacitors connected to these nodes must have low leakage consistent with these currents to prevent timing errors. Note 4: The sink/source is supplied through a resistor, and is proportional to VCC (Figure 8). At VCC = 2V, it is typically ±24µA. __________________________________________Typical Operating Characteristics (CSWT = CSRT = 1500pF, TA = +25°C, unless otherwise noted.) |
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