Datasheet LTC4316 (Analog Devices)

LTC4316 Single I2C/SMBus Address Translator
FEATURES DESCRIPTION
n
Allows Multiple Slaves with the Same Address to
The LTC®4316 enables the hardwired address of one or
Coexist on the Same Bus
more I2C or SMBus slave devices to be translated to a n
Resistor Configurable Address Translation
different address. This allows slaves with the same hard- n
No Software Programming Required
wired address to coexist on the same bus. Only discrete n Compatible with SMBus, I2C and I2C Fast Mode resistors are needed to select the new address and no n Pass-Through Mode Allows General Call Addressing software programming is required. Up to 127 different n ±4kV HBM ESD Ruggedness address translations are available. n Level Translation for 2.5V, 3.3V and 5V Buses The LTC4316 incorporates a pass-through mode which n Stuck Bus Timeout disables the address translation and allows general call n Prevents SDA and SCL Corruption During Live Board addressing by the master. The LTC4316 is designed to Insertion and Removal automatically recover from abnormal bus conditions like n Support Bus Hot Swap bus stuck low or premature STOP bits. n 10-Lead MSOP and DFN 3mm × 3mm Packages
NUMBER OF INPUT NUMBER OF OUTPUT PART NUMBER CHANNELS CHANNELS APPLICATIONS
LTC4316 1 1 n LTC4317 1 2 I2C, SMBus Address Expansion n LTC4318 2 2 Address Translation n Servers 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. n Telecom Protected by U.S. Patents, including 6356140, 6650174, 7032051, 7478286. Patent pending.
TYPICAL APPLICATION TRANSLATES BY 0x02
3.3V 5V START R/W ACK BIT ADDRESS BITS BIT BIT
SENDS RECEIVES ADDRESS 0x34 ADDRESS 0x36
a6 a5 a4 a3 a2 a1 a0 VCC SCL SCLIN SCLOUT SCL SCLIN MASTER LTC4316 SLAVE SDAIN 0 0 1 1 0 1 0 0 = 0x34 SDA SDAIN SDAOUT SDA TRANSLATION 3.3V ENABLE READY BYTE 0 0 0 0 0 0 1 0 = 0x02 XORL XORH GND SDAOUT 0 0 1 1 0 1 1 0 = 0x36 976k 182k 4316 TA01b 3.3V 4316 TA01a 4316fa For more information www.linear.com/LTC4316 1