LTC4317: Dual I2C/SMBus Address Translator Data Sheet10/20/2015223K
Features and Benefits
- Allows Multiple Slaves with the Same Address to Coexist on the Same Bus
- Resistor Configurable Address Translation
- No Software Programming Required
- Compatible with SMBus, I2C and I2C Fast Mode
- Pass-Through Mode Allows General Call Addressing
- ±4kV HBM ESD Ruggedness
- Level Translation for 2.5V, 3.3V and 5V Buses
- Stuck Bus Timeout
- Prevents SDA and SCL Corruption During Live Board Insertion and Removal
- Support Bus Hot Swap™
- 16-Lead DFN 5mm × 3mm Package
The LTC4317 enables the hardwired address of one or more I2C or SMBus slave device to be translated to a different address. This allows slaves with the same hardwired address to coexist on the same bus. Only discrete resistors are needed to select the new address and no software programming is required. Up to 127 different address translations are available.
The LTC4317 incorporates a pass-through mode which disables the address translation and allows general call addressing by the master. The LTC4317 is designed to automatically recover from abnormal bus conditions like bus stuck low or premature STOP bits.
The LTC4317 has two output channels for two different sets of slaves. The input channels are tied together to a common set of pins to reduce the pin count and package size.
|Part Number||Number of Input Channels||Number of Output Channels|
- I2C, SMBus Address Expansion
- Address Translation
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
R527 Reliability Data3/26/201831 K
I2C/SMBus Address Translators7/13/20171M
Serial Bus Buffers, Extenders, and Accelerators7/13/2017823 K
I2C Quick Guide7/13/20171M
Digital Isolation and Interface Technology Selection Guide2/7/20204 M
Tools & Simulations
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|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LTC4317CDHC#PBF||Material Declaration||Reliability Data||16-Lead DFN (5mm x 3mm w/ EP)|
|LTC4317CDHC#TRPBF||Material Declaration||Reliability Data||16-Lead DFN (5mm x 3mm w/ EP)|
|LTC4317IDHC#PBF||Material Declaration||Reliability Data||16-Lead DFN (5mm x 3mm w/ EP)|
|LTC4317IDHC#TRPBF||Material Declaration||Reliability Data||16-Lead DFN (5mm x 3mm w/ EP)|
|Wafer Fabrication Data||R527 Reliability Data|
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