MAX6618 2 PECI-to-I C Translator General Description Features 2 2 The MAX6618 PECI(1.0)-to-I C translator provides an 400kbps I C-Compatible, 2-Wire Serial Interface 2 efficient, low-cost solution for PECI(1.0)-to-SMBus/I C +3V to +3.6V Supply Voltage protocol conversion. The PECI(1.0)-compliant host PECI(1.0)-Compliant Port reads temperature data directly from up to four 2 PECI(1.0)-to-I C Translation PECI(1.0)-enabled CPUs. This translator will only com- municate with CPUs that support PECI 1.0. Programmable Temperature Offsets 2 The I C interface provides an independent serial com- -20C to +120C Operating Temperature Range munication channel to communicate synchronously with V Input Refers Logic Levels to the PECI REF peripheral devices in a multiple master or multiple slave Supply Voltage system. This interface allows a maximum serial-data 2 Automatic I C Bus Lockup Timeout Reset rate of 400kbps. Lead-Free, 10-Pin MAX Package The MAX6618 is designed to operate from a +3.0V to +3.6V supply voltage and ambient temperature range of -20C to +120C. Ordering Information Applications PART TEMP RANGE PIN-PACKAGE Servers MAX6618AUB+ -20C to +120C 10 MAX Workstations MAX6618AUB+T -20C to +120C 10 MAX Desktop Computers +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. Pin Configuration appears at end of data sheet. Typical Application Circuit +3.3V V CPU V TT V CC V SDA SDA REF CPU MAX6618 2 SCL SCL PECI I C INTERNAL MASTER TEMP AD2 SENSOR AD1 AD0 GND MAX is a registered trademark of Maxim Integrated Products. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com. 19-0730 Rev 4 5/13MAX6618 2 PECI-to-I C Translator ABSOLUTE MAXIMUM RATINGS (All voltages with respect to GND.) Continuous Power Dissipation (T = +70C) A V ..........................................................................-0.3V to +4V MAX (derate 5.6mW/C over T = +70C).................444mW CC A AD0, AD1, AD2,..........................................-0.3V to (V + 0.3V) Operating Temperature Range .........................-20C to +120C CC SCL, SDA .................................................................-0.3V to +6V Junction Temperature......................................................+150C V .........................................................................-0.3V to +4V Storage Temperature Range .............................-65C to +150C REF PECI .........................................................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C REF DC Current through SDA ...................................................10mA 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 (Typical Application Circuit, V = +3V to +3.6V, V = +0.95V to +1.26V, T = -20C to +120C, unless otherwise noted. Typical CC REF A values are at V = +3.3V, V = +1.0V, T = +25C.) (Note 1) CC REF A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SUPPLY Operating Supply Voltage V 3.0 3.6 V CC Operating Supply Current I SCL = 400kHz 4 7 mA CC Power-On-Reset Voltage V 2.60 2.95 V POR INPUT SCL, INPUT/OUTPUT SDA 0.3 Low-Level Input Voltage V V IL x V CC 0.7 High-Level Input Voltage V 5.5 V IH x V CC Low-Level Output Voltage V I = 6mA 0.4 V OL OL Leakage Current I -1 +1 A L Input Capacitance C 10 pF I ADDRESS INPUT AD0 0.3 Low-Level Input Voltage V V IL x V CC 0.7 V CC High-Level Input Voltage V V IH x V + 0.3 CC Leakage Current I -2 +2 A L Input Capacitance C 10 pF I PECI Supply Voltage to PECI Cell V 0.95 1.26 V REF V REF Input Voltage Range V -0.3 V IN + 0.3 Low-Level Input Voltage 0.275 0.500 V V IL Threshold x V x V REF REF High-Level Input Voltage 0.550 0.725 V V IH Threshold x V x V REF REF 2 Maxim Integrated