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MAX823S Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX823S Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 10 page 5-Pin Microprocessor Supervisory Circuits With Watchdog Timer and Manual Reset _______________________________________________________________________________________ 3 PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX82_L/M 10 Reset Threshold Hysteresis MAX82_T/S/R/Z/Y 5 mV Reset Threshold Temperature Coefficient 40 ppm/ °C Reset Timeout Period tRP 140 200 280 ms VCC to RESET Delay VRST - VCC = 100mV 20 µs MAX82_L/M, VCC = VRST max, ISOURCE = 120 µA VCC - 1.5 VOH MAX82_T/S/R/Z/Y, VCC = VRST max, ISOURCE = 30 µA 0.8 ✕ VCC MAX82_L/M, VCC = VRST min, ISINK = 3.2mA 0.4 MAX82_T/S/R/Z/Y VCC = VRST min, ISINK = 1.2mA 0.3 TA = 0 °C to +70°C, VCC = 1V, VCC falling, ISINK = 50 µA 0.3 RESET Output Voltage VOL TA = TMIN to TMAX, VCC = 1.2V, VCC falling, VBATT = 0V, ISINK = 100 µA V MAX82_L/M, RESET = 0V, VCC = 5.5V 800 RESET Output Short-Circuit Current (Note 2) ISOURCE MAX82_T/S/R/Z/Y, RESET = 0V, VCC = 3.6V 400 µA VOH VCC > 1.8V, ISOURCE = 150 µA 0.8 ✕ VCC MAX824L/M, MAX825L/M, VCC = VRST max, ISINK = 3.2mA 0.4 RESET Output Voltage VOL MAX824T/S/R/Z/Y, MAX825T/S/R/Z/Y, VCC = VRST max, ISINK = 1.2mA 0.3 V WATCHDOG INPUT (MAX823/MAX824) Watchdog Timeout Period tWD 1.12 1.60 2.40 s WDI Pulse Width tWDI VIL = 0.4V, VIH = 0.8 ✕ VCC 50 ns VIL 0.3 ✕ VCC WDI Input Voltage (Note 3) VIH 0.7 ✕ VCC V WDI = VCC, time average 120 160 WDI Input Current (Note 4) WDI = 0, time average -20 -15 µA ELECTRICAL CHARACTERISTICS (continued) (VCC = +4.75V to +5.5V for MAX82_L, VCC = +4.5V to +5.5V for MAX82_M, VCC = +3.15V to +3.6V for MAX82_T, VCC = +3V to +3.6V for MAX82_S, VCC = +2.7V to +3.6V for MAX82_R, VCC = +2.38V to +2.75V for MAX82_Z, VCC = +2.25V to +2.75V for MAX82_Y, TA = TMIN to TMAX, TA = -40 °C to +85°C (SC70), TA = -40°C to +125°C (SOT23), unless otherwise noted. Typical values are at TA = +25 °C.) (Note 1) |
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