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MAX792C Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX792C Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 16 page 4 _______________________________________________________________________________________ Microprocessor and Nonvolatile Memory Supervisory Circuits Note 1: The minimum operating voltage is 2.75V; however, the MAX792R and MAX820R are guaranteed to operate down to their preset reset thresholds. Note 2: Pulling RESET IN/INT below 60mV selects internal threshold mode and connects the internal voltage divider to the reset and low-line comparators. External programming mode allows an external resistor divider to set the low-line and reset thresholds (see Figure 4). Note 3: The Chip-Enable Propagation delay is measured from the 50% point at CE IN to the 50% point at CE OUT. PARAMETER CONDITIONS VCC = 5V or VCC = 3V MIN TYP MAX UNITS ISINK = 3.2mA ISOURCE = 1µA Output source current, VCC = 5.5V VOD = 100mV, OVI rising MR Pull-Up Current VIH 0.75 x VCC MR = 0V VCC = 2.5V VCC = 4.25V VIL 0.8 1 VIH 0.75 x VCC CE IN Threshold Voltage VCC = 2.55V VIL 0.2 V CE IN Leakage Current 50 Ω source impedance driver, CLOAD = 50pF Disabled mode ±0.005 ±1 µA VCC = 5V VCC = 3V VCC = 5V 75 150 610 CE IN to CE OUT Resistance OVI Input Threshold Enabled mode VCC = 3V 150 300 1.25 1.30 1.35 V OVI Leakage Current Ω ±0.01 ±25 nA VCC = 5V 0.5 2.5 CE OUT Short-Circuit Current 0.4 OVO Output Voltage Disabled mode, CEOUT = 0V VCC = 3V 0.05 0.2 0.4 VCC - 1 V mA Chip-Enable Propagation Delay (Note 3) 10 50 813 ns IOUT = -100µA VCC - 1 Chip-Enable Output Voltage High (Reset Active) IOUT = 10µA VCC - 0.5 V Reset Active to CE OUT High VCC falling 15 µs MR Minimum Pulse Width 25 µs MR to RESET Propagation Delay 12 µs MR Threshold Range 1.1 1.3 1.5 V VCC = 4.25V to VCC = 5.5V 523 80 µA OVO Short-Circuit Current µA 13 OVI to OVO Delay VOD = 100mV, OVI falling 55 µs ELECTRICAL CHARACTERISTICS (continued) (VCC = +2.75V to +5.5V, TA = TMIN to TMAX, unless otherwise noted.) MANUAL RESET CHIP-ENABLE GATING OVERVOLTAGE COMPARATOR |
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