EVALUATION KIT AVAILABLE MAX13036 Contact Monitor and Level Shifter General Description Features The MAX13036 contact monitor and level shifter monitors +6V to +26V Operating Voltage Range and debounces eight remote mechanical switches and +42V Compatibility on BAT asserts an interrupt (INT) if a switch changes state. The Inputs Withstand Reverse Battery state of each switch is sampled through an SPI interface by reading the status register and any switch can be Withstands Dynamic Battery Voltage Drop While V L is Present prohibited from asserting an interrupt by writing to the command register. Four of the switch inputs are intended Ultra-Low Operating Current 17A (typ) in Scan for ground-connected switches (IN0IN3), and the other Mode four inputs (IN4IN7), are programmable in groups of Resistor-Adjustable Switching Hysteresis two for either ground-connected or battery-connected CMOS-Compatible Logic Outputs (+2.7V min) switches. Two switch inputs (IN0, IN1) have direct level- shifted outputs (DO0, DO1) to be used for PWM or other Built-In Switch Debouncing timing-based signals. Interrupt Output Switch input thresholds are set to 50% of the voltage Immunity to Transients applied to BATREF. The threshold hysteresis is set by High Modularity connecting an external resistor from HYST to ground. The MAX13036 supplies an adjustable wetting current to each Thermal Protection closed switch to clean mechanical switch contacts that 8kV HBM ESD Protection on IN0IN7 Without are exposed to adverse conditions. External Components The MAX13036 operates with a +6V to +26V battery Two Inputs (IN0, IN1) Programmable as Direct voltage applied to BAT. A separate +2.7V to +5.5V Outputs logic supply input (V ) sets the interface voltage. The L Four Inputs (IN4IN7) Programmable for BAT or MAX13036 is available in a 5mm x 5mm 28-pin TQFN GND Related Switches package and operates over the -40C to +125C tem- perature range. Ordering Information Applications Control ECUs PART TEMP RANGE PIN-PACKAGE Pin Configuration 28 TQFN-EP* MAX13036ATI+ -40C to +125C TOP VIEW (5mm x 5mm) +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. DO0 22 14 INT *EP SD 23 13 OT GND 24 12 GND BATREF 25 11 TDEB Typical Application Circuit appears at end of data sheet. MAX13036 BAT 26 10 WET N.C. 27 9 HYST + N.C. INO 28 8 TQFN *CONNECT EXPOSED PADDLE TO GROUND 19-0808 Rev 1 2/15 IN1 1 21 DO1 IN2 2 20 N.C. IN3 3 19 V L IN4 4 18 CLK IN5 5 17 SDI IN6 6 16 SDO IN7 7 15 CSMAX13036 Contact Monitor and Level Shifter Absolute Maximum Ratings (All voltages referenced to GND, unless otherwise noted.) Continuous Current (CS, CLK, SDI, SDO, DO0, DO1) ....20mA V .........................................................................-0.3V to +6.0V HBM ESD Protection (IN0IN7) ..........................................8kV L BAT ........................................................................-0.3V to +42V Continuous Power Dissipation (T = +70C, multilayer board) A BATREF, IN to BAT ..............................................-45V to +45V 28-Pin TQFN (derate 34.5mW/C above +70C) ......2759mW BATREF, IN to GND .............................................-45V to +45V Operating Temperature Range ......................... -40C to +125C SD..........................................................................-0.3V to +45V Junction Temperature ......................................................+150C HYST, WET, TDEB, OT, INT ..................................-0.3V to 6.0V Storage Temperature Range ............................ -65C to +150C CS, CLK, SDI, SDO, DO0, DO1 .................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C L 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 = +2.7V to +5.5V, BAT = +6V to +26V, SD = V , T = -40C to +125C, unless otherwise noted. Typical values are at V = +3.3V, L L A L BAT = +14V, T = +25C) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLY V Supply Range V 2.7 5.5 V L L V Supply Current I V = +5.5V, V = +14V 0 1 A L L L BAT BAT Supply Range V 6 26 V BAT V = +5V, V = +14V, continuous L BAT scan, programmable hysteresis off, Total Supply Current I M0 = M1 =1, WEND = 1, IN0IN7 = 46 80 A SUP unconnected, CS = V , SDI = CLK = GND (Note 2) L V = +14V, scan mode (SC0 = 0, BAT Total Supply Current in Scan I SC1= 0, SC2 = 0), CS = V , 17 36 A SUP SCAN L Mode SDI = CLK = GND (Note 2) V = 0V, SD T = +25C 2 3.2 A Total Supply Current in Shutdown V = +14V, BAT I A SHDN Mode V = BATREF T = -40C to +125C 2 4.0 A +14V (Note 2) BATREF Input Leakage Current in I V = 0V, V = +14V 1 A L BATREF SD BATREF Shutdown BATREF Input Resistance R V = +14V 1 M BATREF BATREF SWITCH INPUTS (IN0IN7) R = or programmable hysteresis 0.425 x 0.5 x 0.575 x HYST disabled V V V Input-Voltage Threshold Center BATREF BATREF BATREF V V TH C (Note 3) 0.4 x 0.5 x 0.63 x R = 90k HYST V V V BATREF BATREF BATREF R = or programmable hysteresis 0.133 x 0.166 x 0.22 x HYST disabled V V V BATREF BATREF BATREF Input-Voltage Threshold 0.26 x 0.361 x 0.48 x V R = 90k V TH HYS HYST Hysteresis (Note 4) V V V BATREF BATREF BATREF 0.5 x R = 0 HYST V BATREF Maxim Integrated 2 www.maximintegrated.com