MAX6453MAX6456 19-2637 Rev 3 6/10 P Supervisors with Separate V Reset and CC Manual Reset Outputs General Description Features The MAX6453MAX6456 are low-power, dual-voltage Precision Factory-Set Reset Thresholds From P supervisors featuring separate V reset and manu- 1.6V to 4.6V CC al reset outputs. The dual outputs support both soft- Adjustable Threshold to Monitor Voltages Down system reset (interrupt) and hard-system reset (reboot) to 0.63V functions. The reset output asserts when any of the Manual Reset Input with Extended Setup Period monitored voltages falls below its specified threshold and remains asserted for the reset timeout (140ms min) Immune to Short Voltage Transients after all voltages exceed their respective reset thresh- Low 6A Supply Current olds. All devices are offered with nine factory-fixed Guaranteed Valid Reset Down to V = 1.0V CC reset thresholds for monitoring primary system voltages (V ) from 1.8V to 5V and an adjustable reset input for Active-Low RESET (Push-Pull or Open-Drain) CC monitoring a secondary system voltage down to 0.63V. Outputs Each device has a manual reset input, a V reset out- 140ms (min) Reset Timeout Period CC put, and a manual reset output. The MAX6453/ Small SOT Package MAX6454 manual reset output asserts when the manual reset input is low. It remains asserted for the manual Ordering Information reset timeout period (140ms min) after the manual reset input transitions high. The MAX6453/MAX6354 manual PART TEMP RANGE PIN-PACKAGE reset input controls only the manual reset output and MAX6453UT -T -40C to +85C 6 SOT23 does not affect the V reset output. CC MAX6454UT -T -40C to +85C 6 SOT23 The manual reset input of the MAX6455/MAX6456 con- MAX6455UT -T -40C to +85C 6 SOT23 trols both the manual reset and V reset outputs. When CC the manual reset input is low for less than the extended MAX6456UT -T -40C to +85C 6 SOT23 setup timeout period, only the manual reset output Note: The first is a placeholder for the threshold voltage asserts and remains asserted for the manual reset time- level of the devices. A desired threshold level is set by the part out period (140ms min) after the manual reset input tran- number suffix found in Table 1. The third is a placeholder for sitions high. If the manual reset input is low for at least the manual reset setup period of the devices. A desired setup period is set by the letter suffix found in Table 2. All devices are the extended setup timeout period, the reset output also available in tape-and-reel only. There is a 2500-piece minimum asserts and remains asserted for the reset timeout peri- order increment for standard versions (Table 2). Sample stock od (140ms min) after the manual reset input transitions is typically held on standard versions only. Nonstandard ver- high. This enhanced feature allows the implementation of sions require a minimum order increment of 10,000 pieces. a soft/hard-system reset combination. Contact factory for availability. The MAX6453/MAX6455 have active-low, push-pull Devices are available in both leaded and lead(Pb)-free packaging. reset and manual reset outputs, and the MAX6454/ Specify lead-free by replacing -T with +T when ordering. MAX6456 have active-low, open-drain reset and manu- al reset outputs. All devices are available in small Selector Guide appears at end of data sheet. SOT23-6 packages and are fully specified over the extended temperature range (-40C to +85C). Pin Configurations Applications TOP VIEW Set-Top Boxes Consumer Electronics RESET16MR RESET16MR DVD Players MAX6453 MAX6455 Cable/DSL Modems GND 2 5 RSTIN GND 2 5 RSTIN MAX6454 MAX6456 MP3 Players Industrial Equipment MROUT34 V MROUT34 V CC CC Automotive SOT23-6 SOT23-6 Medical Devices Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.P Supervisors with Separate V Reset and CC Manual Reset Outputs ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND) Operating Temperature Range .......................... -40C to +85C V ..........................................................................-0.3V to +6V Junction Temperature......................................................+150C CC Open-Drain RESET, MROUT....................................-0.3V to +6V Storage Temperature Range .............................-65C to +150C MR, Push-Pull RESET, MROUT ..................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C CC MR, RSTIN ...............................................................-0.3V to +6V Soldering Temperature (reflow) Input Current, All Pins.......................................................20mA Lead(Pb)-free...............................................................+260C Continuous Power Dissipation (T = +70C) Containing Lead...........................................................+240C A 6-Pin SOT23 (derate 8.7mW/C above +70C).............696mW 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 = 1.0V to 5.5V, T = -40C to +85C, unless otherwise specified. Typical values are at T = +25C.) (Note 1) CC A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Voltage Range V 1.0 5.5 V CC V = 5.5V, no load 7 20 CC V Supply Current I A CC CC V = 3.6V, no load 6 16 CC 46 4.50 4.63 4.75 44 4.25 4.38 4.50 31 3.00 3.08 3.15 29 2.85 2.93 3.00 V Reset Threshold V 26 2.55 2.63 2.70 V CC TH 23 2.25 2.32 2.38 22 2.12 2.19 2.25 17 1.62 1.67 1.71 16 1.52 1.58 1.62 Reset Threshold Tempco 60 ppm/C Reset Threshold Hysteresis 2 V mV TH T = 0C to +85C 0.615 0.630 0.645 A RSTIN Threshold V V TH-RSTIN T = -40C to +85C 0.610 0.650 A RSTIN Threshold Hysteresis V 2.5 mV HYST RSTIN Input Current I -25 +25 nA RSTIN RSTIN to Reset Output Delay V falling at 1mV/s 15 s RSTIN Reset Timeout Period t 140 210 280 ms RP V to RESET Output Delay t V falling at 1mV/s 20 s CC RD CC K 6.72 10.08 13.44 L 4.48 6.72 8.16 MR Minimum Setup Period t MR to RESET s MR (Pulse Width) S 2.24 3.36 4.48 T 1.12 1.68 2.24 MR Minimum Input Pulse RESET asserted, MAX6455/MAX6456 2.24 3.36 4.48 s MR Glitch Rejection 100 ns MR to MROUT Delay 200 ns Manual Reset Timeout Period t 140 210 280 ms MRP 2 MAX6453MAX6456