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MAX6727A Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX6727A Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 18 page Dual/Triple, Ultra-Low-Voltage, SOT23 µP Supervisory Circuits _______________________________________________________________________________________ 9 Pin Description (continued) PIN MAX6715A/ MAX6716A MAX6717A/ MAX6718A MAX6719A/ MAX6720A MAX6721A/ MAX6722A MAX6723A/ MAX6724A MAX6725A/ MAX6726A MAX6727A MAX6728A/ MAX6729A/ MAX6797A NAME FUNCTION — — —— — — —7 PFI Power-Fail Voltage Monitor Input. High- impedance input for internal power-fail monitor comparator. Connect PFI to an external resistor- divider network to set the power-fail threshold voltage (0.626V typical internal reference voltage). Connect to GND, VCC1, or VCC2 if not used. — — —— — — —4 PFO Active-Low Power-Fail Monitor Output, Open- Drain or Push-Pull. PFO is asserted low when PFI is less than 0.626V. PFO deasserts without a reset timeout period. Open- drain outputs require an external pullup resistor. Push-pull outputs are referenced to VCC1. — — — — — 4 — — RST Active-High Reset Output, Open-Drain or Push-Pull. RST changes from low to high when VCC1 or VCC2 drops below selected reset thresholds, RSTIN is below threshold, MR is pulled low, or the watchdog triggers a reset. RST remains HIGH for the reset timeout period after VCC1/VCC2/RSTIN exceed the device reset thresholds, MR goes low to high, or the watchdog triggers a reset. Open- drain outputs require an external pullup resistor. Push-pull outputs are referenced to VCC1. |
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