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MAX7387 Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX7387 Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 12 page System Monitoring Oscillator with Watchdog and Power Fail _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (Typical Application Circuit, VCC = +2.7V to +5.5V, TA = -40°C to +125°C, 1MHz to 16MHz output frequency range, typical values at VCC = +5.0V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CLOCK Output Jitter Observation for 20s using a 500MHz oscilloscope 310 ps RMS Output Rise Time tR CLOAD = 10pF, 10% to 90% of full scale (Note 2) 2.5 7.0 ns Output Fall Time tF CLOAD = 10pF, 90% to 10% of full scale (Note 2) 2.8 7.5 ns INTERNAL POWER-ON RESET TA = +25°C VTH - 1.5% VTH + 1.5% VTH+ VCC rising, Table 2 TA = -40°C to +125°C VTH - 2.5% VTH + 2.5% Reset Voltage VTH- VCC falling 0.98 x VTH+ V Reset Timeout Period tRST Figures 1, 2 86 135 250 µs WATCHDOG WDS1 = GND, WDS2 = GND 11 16 22 WDS1 = open, WDS2 = GND 22 32 44 WDS1 = VCC, WDS2 = GND 44 64 88 WDS1 = GND, WDS2 = open 88 128 177 WDS1 = open, WDS2 = open 177 256 354 WDS1 = VCC, WDS2 = open 354 512 708 WDS1 = GND, WDS2 = VCC 708 1024 1416 WDS1 = open, WDS2 = VCC 1416 2048 2832 ms Watchdog Timeout Period (Figure 2) tWDG WDS1 = WDS2 = VCC (watchdog disabled) POWER FAIL Power-Fail Select Threshold VSEL PFI input 0.65 x VCC 0.85 x VCC V VCC Monitoring Threshold (Internal Threshold) VITH VCC rising 4.06 4.38 4.60 V Internal Threshold Hysteresis VIHYST VCC falling 1.0 2 4.0 %VITH PFI Monitoring Threshold (External Threshold) VETH PFI rising 0.9 1.1 1.4 V External Threshold Hysteresis VEHYST PFI falling 1.0 3.5 8.0 %VETH Note 1: All parameters are tested at TA = +25°C. Specifications over temperature are guaranteed by design. Note 2: Guaranteed by design. Not production tested. |
Similar Part No. - MAX7387_06 |
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Similar Description - MAX7387_06 |
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