MAX6351MAX6360 Dual/Triple-Voltage P Supervisory Circuits General Description Features Precision Monitoring of Multiple +1.8V, +2.5V, +3.0V, The MAX6351MAX6360 microprocessor (P) supervi- +3.3V, and +5V Power-Supply Voltages sors with multiple reset voltages significantly improve Precision Factory-Set Power-Supply system reliability and accuracy compared to separate ICs Reset Thresholds or discrete components. If any input supply voltage drops 20A Supply Current below its associated preset threshold, all reset outputs 100ms min Power-On-Reset Pulse Width are asserted. In addition, the outputs are valid as long as Debounced TTL/CMOS-Compatible either input supply voltage remains greater than +1.0V. Manual-Reset Input All devices in this series have an active-low debounced Watchdog Timer manual-reset input. In addition, the MAX6358/MAX6359/ 46.4s Startup Timeout MAX6360 offer a watchdog timer input with a 46.4s startup 2.9s Normal Timeout timeout period and a 2.9s timeout period. The MAX6355/ Fully Guaranteed Over Temperature MAX6356/MAX6357 offer an additional voltage-monitor Guaranteed RESET Valid to V 1 = 1V or V 2 = 1V CC CC input to monitor a third voltage. Power-Supply Transient Immunity The MAX6351 features two active-low, push-pull reset No External Components for Dual-Voltage Systems outputs, one is referenced to V 1 and the other is refer- Small 5- and 6-Pin SOT23 Packages CC enced to V 2. The MAX6353/MAX6356/MAX6359 offer Low Cost CC an active-low, push-pull reset output referenced to VCC1. Applications The MAX6354/MAX6357/MAX6360 offer an active-low, Computers Intelligent Instruments push-pull reset output referenced to V 2. CC Controllers Multivoltage Systems All these devices are offered with a wide variety of voltage Portable/Battery- threshold levels, as shown in the Voltage-Threshold Levels table. Powered Equipment They are available in 5- and 6-pin SOT23 packages and oper- ate over the extended (-40C to +85C) temperature range. Ordering Information Voltage Threshold Levels PART TEMP RANGE PIN-PACKAGE PART NO. V 1 NOMINAL V 2 NOMINAL CC CC MAX6351 UT-T -40C to +85C 6 SOT23 SUFFIX VOLTAGE VOLTAGE MAX6352 UK-T -40C to +85C 5 SOT23 ( ) THRESHOLD (V) THRESHOLD (V) MAX6353 UK-T -40C to +85C 5 SOT23 LT 4.63 3.08 MAX6354 UK-T -40C to +85C 5 SOT23 LS 4.63 2.93 LR 4.63 2.63 MAX6355 UT-T -40C to +85C 6 SOT23 MT 4.38 3.08 MAX6356 UT-T -40C to +85C 6 SOT23 MS 4.38 2.93 MAX6357 UT-T -40C to +85C 6 SOT23 MR 4.38 2.63 MAX6358 UT-T -40C to +85C 6 SOT23 TZ 3.08 2.32 TY 3.08 2.19 MAX6359 UT-T -40C to +85C 6 SOT23 TW 3.08 1.67 MAX6360 UT-T -40C to +85C 6 SOT23 TV 3.08 1.58 *The are placeholders for the threshold voltage levels of SZ 2.93 2.32 the devices. Substitute the part number suffix in the Voltage SY 2.93 2.19 Threshold Levels table for the desired voltage level. All devices SW 2.93 1.67 are available in tape-and-reel only. There is a 2500 piece SV 2.93 1.58 minimum order increment for the SOT package. UW 2.78 1.67 Devices are available in both leaded and lead(Pb)-free packag- UV 2.78 1.58 ing. Specify lead-free by replacing -T with +T when ordering. RW 2.63 1.67 Pin Configurations appear at end of data sheet. RV 2.63 1.58 Selector Guide appears at end of data sheet. Note: Standard versions are shown in bold. Sample stock is generally held on the standard versions only. Contact factory for availability. 19-1508 Rev 7 5/14MAX6351MAX6360 Dual/Triple-Voltage P Supervisory Circuits Absolute Maximum Ratings V 1, V 2 to GND ...............................................-0.3V to +6V Input/Output Current, All Pins .............................................20mA CC CC RST (MAX6352/MAX6355/MAX6358) ....................-0.3V to +6V Continuous Power Dissipation (T = +70C) A RST, MR, WDI, RST1, RSTIN (MAX6351/MAX6353/ 5-Pin SOT23 (derate 7.1mW/C above +70C) ..........571mW MAX6356/MAX6359) .......................... -0.3V to (V 1 + 0.3V) 6-Pin SOT23 (derate 8.7mW/C above +70C) ..........695mW CC RST, RST2 (MAX6351/MAX6354/ Operating Temperature Range ........................... -40C to +85C MAX6357/MAX6360) .......................... -0.3V to (V 2 + 0.3V) Junction Temperature ......................................................+150C CC Storage Temperature Range ............................ -65C to +150C 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 = V 2 = +1.2V to +5.5V, T = -40C to +85C, unless otherwise noted. Typical values are at T = +25C.) (Note 1) CC CC A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS T = 0C to +70C 1.0 5.5 V 1, A CC Supply Voltage (Note 2) V V 2 CC T = -40C to +85C 1.2 5.5 A I 1 + V 1 = 5.5V, V 2 = 3.6V, all I/O pins CC CC CC Supply Current 20 50 A I 2 open CC T = +25C 4.54 4.63 4.72 A MAX63 L T = -40C to +85C 4.5 4.75 A T = +25C 4.3 4.38 4.46 A MAX63 M T = -40C to +85C 4.25 4.50 A T = +25C 3.03 3.08 3.14 A MAX63 T T = -40C to +85C 3.00 3.15 A V 1 Threshold (Note 3) V 1 V CC TH T = +25C 2.88 2.93 2.98 A MAX63 S T = -40C to +85C 2.85 3.00 A T = +25C 2.74 2.78 2.82 A MAX63 U T = -40C to +85C 2.70 2.85 A T = +25C 2.58 2.63 2.68 A MAX63 R T = -40C to +85C 2.55 2.70 A T = +25C 3.03 3.08 3.14 A MAX63 T T = -40C to +85C 3.00 3.15 A T = +25C 2.88 2.93 2.98 A MAX63 S T = -40C to +85C 2.85 3.00 A T = +25C 2.58 2.63 2.68 A MAX63 R T = -40C to +85C 2.55 2.70 A T = +25C 2.28 2.32 2.35 A V 2 Threshold (Note 3) V 2 MAX63 Z V CC TH T = -40C to +85C 2.25 2.38 A T = +25C 2.16 2.19 2.22 A MAX63 Y T = -40C to +85C 2.13 2.25 A T = +25C 1.64 1.67 1.70 A MAX63 W T = -40C to +85C 1.62 1.71 A T = +25C 1.55 1.58 1.61 A MAX63 V T = -40C to +85C 1.53 1.62 A Maxim Integrated 2 www.maximintegrated.com