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MAX6747KA29 Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX6747KA29 Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 14 page µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (VCC = +1.2V to +5.5V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at VCC = +5V and TA = +25°C.) (Note 1) Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. VCC to GND ...........................................................-0.3V to +6.0V SRT, SWT, SET0, SET1, RESET IN, WDS, MR, WDI, to GND .......................................…-0.3V to (VCC + 0.3V) RESET (Push-Pull) to GND......................…-0.3V to (VCC + 0.3V) RESET (Open Drain) to GND .............................…-0.3V to +6.0V Input Current (All Pins) .....................................................±20mA Output Current (RESET) ...................................................±20mA Continuous Power Dissipation (TA = +70°C) 8-Pin SOT23 (derate 8.9mW/°C above +70°C)............714mW Operating Temperature Range .........................-40°C to +125°C Storage Temperature Range ............................-65°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow) .......................................+260°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS TA = 0°C to +125°C 1.0 5.5 Supply Voltage VCC TA = -40°C to 0°C 1.2 5.5 V VCC ≤ 5.5V 5 10 VCC ≤ 3.3V 4.2 9 Supply Current ICC VCC ≤ 2.0V 3.7 8 µA VCC Reset Threshold VTH See VTH selection table TA = -40°C to+125°C VTH - 2% VTH + 2% V Hysteresis VHYST 0.8 % VCC to Reset Delay VCC falling from VTH + 100mV to VTH - 100mV at 1mV/µs 20 µs CSRT = 1500pF 5.692 7.590 9.487 Reset Timeout Period tRP CSRT = 100pF 0.506 ms SRT Ramp Current IRAMP VSRT = 0 to 1.23V; VCC = 1.6V to 5V 200 250 300 nA SRT Ramp Threshold VRAMP VCC = 1.6V to 5V (VRAMP rising) 1.173 1.235 1.297 V CSWT = 1500pF 5.692 7.590 9.487 Normal Watchdog Timeout Period (MAX6746–MAX6751) tWD CSWT = 100pF 0.506 ms CSWT = 1500pF 728.6 971.5 1214.4 Extended Watchdog Timeout (MAX6746–MAX6751) tWD CSWT = 100pF 64.77 ms CSWT = 1500pF 728.6 971.5 1214.4 Slow Watchdog Period (MAX6752/MAX6753) tWD2 CSWT = 100pF 64.77 ms CSWT = 1500pF 91.08 121.43 151.80 Fast Watchdog Timeout Period, SET Ratio = 8, (MAX6752/MAX6753) tWD1 CSWT = 100pF 8.09 ms CSWT = 1500pF 45.53 60.71 75.89 Fast Watchdog Timeout Period, SET Ratio = 16, (MAX6752/MAX6753) tWD1 CSWT = 100pF 4.05 ms |
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