MAX803/MAX809/ 3-Pin Microprocessor Reset Circuits MAX810 General Description Benefits and Features Precision Monitoring of +2.5V, +3V, +3.3V, and The MAX803/MAX809/MAX810 are microprocessor (P) +5V Power-Supply Voltages supervisory circuits used to monitor the power supplies Fully Specified Over Temperature in P and digital systems. They provide excellent circuit Available in Three Output Configurations reliability and low cost by eliminating external components Open-Drain RESET Output (MAX803) and adjustments when used with +5V, +3.3V, +3.0V, or Push-Pull RESET Output (MAX809) +2.5V powered circuits. Push-Pull RESET Output (MAX810) These circuits perform a single function: they assert a 140ms (min) Power-On-Reset Pulse Width reset signal whenever the V supply voltage declines CC 12A Supply Current below a preset threshold, keeping it asserted for at least Guaranteed Reset Valid to V = +1V CC 140ms after V has risen above the reset threshold. CC Power Supply Transient Immunity Reset thresholds suitable for operation with a variety of No External Components supply voltages are available. 3-Pin SC70 and SOT23 Packages AEC-Q100 Qualified. Refer to Ordering Information The MAX803 has an open-drain output stage, while the for Specific /V Versions. MAX809/MAX810 have push-pull outputs. The MAX803s open-drain RESET output requires a pullup resistor that Selector Guide and Ordering Information appear at end of data sheet. can be connected to a voltage higher than V . The CC MAX803/MAX809 have an active-low RESET output, while the MAX810 has an active-high RESET output. The reset comparator is designed to ignore fast transients on V , and the outputs are guaranteed to be in the correct CC Typical Operating Circuit logic state for V down to 1V. CC V CC Low supply current makes the MAX803/MAX809/MAX810 ideal for use in portable equipment. The MAX803 is V V CC CC R * PULLUP available in a 3-pin SC70 package, and the MAX809/ MAX803 P MAX810 are available in 3-pin SC70 or SOT23 packages. MAX809 RESET RESET INPUT Applications Computers GND GND Controllers Intelligent Instruments *MAX803 ONLY Critical P and C Power Monitoring Portable/Battery-Powered Equipment Automotive 19-0344 Rev 11 10/17MAX803/MAX809/ 3-Pin Microprocessor Reset Circuits MAX810 Absolute Maximum Ratings Terminal Voltage (with respect to GND) Continuous Power Dissipation (T = +70C) A V ...................................................................-0.3V to +6.0V 3-Pin SC70 (derate 2.17mW/C above +70C) ...........174mW CC RESET, RESET (push-pull) .................. -0.3V to (V + 0.3V) 3-Pin SOT23 (derate 4mW/C above +70C) .............320mW CC RESET (open drain) .........................................-0.3V to +6.0V Operating Temperature Range Input Current, V .............................................................20mA 3-Pin SC70 ................................................... -40C to +125C CC Output Current, RESET, RESET ........................................20mA 3-Pin SOT23 ................................................. -40C to +105C Rate of Rise, V ..........................................................100V/s Storage Temperature Range .............................-65C to +150C CC Lead Temperature (soldering, 10s) .................................+300C Soldering Temperature (reflow) .......................................+260C 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. Electrical Characteristics (V = full range, T = -40C to +105C (SOT23) or T = -40C to +125C (SC70), unless otherwise noted. Typical values are at T = CC A A A +25C, V = 5V for L/M/J versions, V = 3.3V for T/S versions, V = 3V for R version, and V = 2.5V for Z version.) (Note 1) CC CC CC CC PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS T = 0C to +70C 1.0 5.5 A V Range T = -40C to +105C (MAX8 EUR) 1.2 5.5 V CC A T = -40C to +125C (MAX8 EXR) 1.2 5.5 A V < 5.5V, MAX8 L/M 24 60 T = -40C CC A to +85C V < 3.6V, MAX8 R/S/T/Z 17 50 CC Supply Current (SOT23) I CC V < 5.5V, MAX8 L/M 100 T = +85C CC A to +105C V < 3.6V, MAX8 R/S/T/Z 100 CC A V < 5.5V, MAX8 L/M 24 35 T = -40C CC A to +85C V < 3.6V, MAX8 R/S/T/Z 17 30 CC Supply Current (SC70) I CC V < 5.5V, MAX8 L/M 60 T = +85C CC A to +125C V < 3.6V, MAX8 R/S/T/Z 60 CC T = +25C 4.56 4.63 4.70 A MAX8 L T = -40C to +85C 4.50 4.75 A T = -40C to +125C 4.40 4.86 A T = +25C 4.31 4.38 4.45 A MAX8 M T = -40C to +85C 4.25 4.50 A T = -40C to +125C 4.16 4.56 A T = +25C 3.93 4.00 4.06 A MAX809J T = -40C to +85C 3.89 4.10 A (SOT only) T = -40C to +125C 3.80 4.20 Reset Threshold A V V TH (SOT only) T = +25C 3.04 3.08 3.11 A MAX8 T T = -40C to +85C 3.00 3.15 A T = -40C to +125C 2.92 3.23 A T = +25C 2.89 2.93 2.96 A MAX8 S T = -40C to +85C 2.85 3.00 A T = -40C to +125C 2.78 3.08 A T = +25C 2.59 2.63 2.66 A MAX8 R T = -40C to +85C 2.55 2.70 A T = -40C to +125C 2.50 2.76 A Maxim Integrated 2 www.maximintegrated.com