LTC4317 2 Dual I C/SMBus Address Translator Fea T Descrip T n Allows Multiple Slaves with the Same Address to The LTC 4317 enables the hardwired address of one or more 2 Coexist on the Same Bus I C or SMBus slave device to be translated to a different ad- n Resistor Configurable Address Translation dress. This allows slaves with the same hardwired address to n No Software Programming Required coexist on the same bus. Only discrete resistors are needed 2 2 n Compatible with SMBus, I C and I C Fast Mode to select the new address and no software programming is n Pass-Through Mode Allows General Call Addressing required. Up to 127 different address translations are available. n 4kV HBM ESD Ruggedness The LTC4317 incorporates a pass-through mode which dis- n Level Translation for 2.5V, 3.3V and 5V Buses ables the address translation and allows general call address- n Stuck Bus Timeout ing by the master. The LTC4317 is designed to automatically n Prevents SDA and SCL Corruption During Live Board recover from abnormal bus conditions like bus stuck low or Insertion and Removal premature STOP bits. n Support Bus Hot Swap n The LTC4317 has two output channels for two different sets 16-Lead DFN 5mm 3mm Package of slaves. The input channels are tied together to a com- mon set of pins to reduce the pin count and package size. a T NUMBER OF INPUT NUMBER OF OUTPUT PART NUMBER CHANNELS CHANNELS 2 n I C, SMBus Address Expansion LTC4316 1 1 n Address Translation LTC4317 1 2 n Servers LTC4318 2 2 n Telecom L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6356140, 6650174, 7032051, 7478286. Patent pending. Typical a T 3.3V 5V TRANSLATES V CC BY 0x02 SCL SCL SCLIN SCLOUT1 SLAVE 1 ADDRESS MASTER R/W ACK LTC4317 0x36 START ADDRESS BITS BIT BIT SDA SDAIN SDAOUT1 SDA a6 a5 a4 a3 a2 a1 a0 SENDS RECEIVES SCLIN ADDRESS 0x34 ADDRESS 0x36 3.3V ENABLE1 READY1 SDAIN 0 0 1 1 0 1 0 0 = 0x34 5V ENABLE2 READY2 TRANSLATES TRANSLATION 0 0 0 0 0 0 1 0 = 0x02 SCL BYTE BY 0x04 SCLOUT2 SLAVE 2 ADDRESS SDAOUT1 0 0 1 1 0 1 1 0 = 0x36 0x36 4317 TA01b SDAOUT2 SDA XORH2 RECEIVES GND XORH1 ADDRESS 0x30 XORL2 XORL1 3.3V 845k 61.9k 93.1k 4317 TA01a 4317fa 1 For more information www.linear.com/LTC4317 ion pplica ions pplica ion uresLTC4317 a Te Maxi Mu M r a T p in c F T (Notes 1, 2) TOP VIEW Input Supply Voltage V ............................. 0.3V to 6V CC GND 1 16 SCLOUT2 Input Voltages ENABLE2 2 15 SCLIN ENABLEn ...................................................... 0.3V to 6V XORH2 3 14 SCLOUT1 XORLn, XORHn ................................0.3V to V + 0.3V CC XORL2 4 13 SDAOUT1 17 Output Voltages GND XORH1 5 12 SDAIN READYn ....................................................... 0.3V to 6V XORL1 6 11 SDAOUT2 Output Currents V 7 10 READY1 CC READYn, SDAOUTn ................................................50mA ENABLE1 8 9 READY2 Input/Output Voltages DHC PACKAGE SCLIN, SCLOUTn, SDAIN, SDAOUTn ............ 0.3V to 6V 16-LEAD (5mm 3mm) PLASTIC DFN T = 150C, = 42C/W JMAX JA Operating Temperature Range EXPOSED PAD (PIN 17) IS GND, PCB CONNECTION OPTIONAL LTC4317C ................................................ 0C to 70C LTC4317I .............................................40C to 85C Storage Temperature Range .................. 65C to 150C o r Der i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4317CDHC PBF LTC4317CDHC TRPBF 4317 16-Lead (5mm 3mm) Plastic DFN 0C to 70C LTC4317IDHC PBF LTC4317IDHC TRPBF 4317 16-Lead (5mm 3mm) Plastic DFN 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: