I2C & SMBus Bus Buffers, Accelerators, & Multiplexers

The Analog Devices family of I2C solutions support hot swappable, 2-wire bidirectional bus buffers to allow I/O card insertion into a live backplane without corruption of the data and clock busses. Additional supported 2-wire buses include SMBus, PMBus, the ATCA intelligent platform management bus (IPMB), and the HDMI DDC bus. I2C/SMBus Accelerators improve bus transitions to allows multiple device connections or a longer, more capacitive interconnect, without compromising slew rates or bus performance. ADI's software-programmable and pin-selectable I2C multiplexers help resolve I2C address limitations, increase fan-in or fan-out, and integrate bus buffers and rise time accelerators for an all-in-one solution. Resistor configurable I2C address translators can be configured with over 100 unique slave addresses to allow multiple slave devices with the same address to coexist on the same bus.

I2C & SMBus Bus Buffers, Accelerators, & Multiplexers

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SortOrderPart#Number of SuppliesCommentsLevel TranslationI2C Hot SwappableStuck BusEnableESD Protection
(V)
Price (1000+)
($ US)
1LTC4331 2 +/-60V Fault Protection, +/-15V Common Mode Range 1.8V to 5.5V No Yes Yes 40k $3.40 (LTC4331CUFD#PBF)
2LTC4318 2 Dual I2C/SMBus Address Translator 2.5V, 3.3V and 5V Yes Yes Yes 4 $1.95 (LTC4318CUF#PBF)
3LTC4317 2 Dual I2C/SMBus Address Translator 2.5V, 3.3V and 5V Yes Yes Yes 4 $1.75 (LTC4317CDHC#PBF)
4LTC4316 1 Single I2C/SMBus Address Translator 2.5V, 3.3V and 5V Yes Yes Yes 4 $1.45 (LTC4316CDD#PBF)
5LTC4315 2 2-Wire Bus Buffer with High Noise Margin 1.5V/1.8V/2.5V/3.3V/5V Yes Yes Yes 4 $2.50 (LTC4315CDE#PBF)
6LTC4313-3Reference Circuit Available 2 2-Wire Bus Buffers with High Noise Margin, No Rise Time Accelerator 1.5V/1.8V/2.5V/3.3V/5V Yes Yes Yes 4 $2.40 (LTC4313CMS8-3#PBF)
7LTC4313-2Reference Circuit Available 2 2-Wire Bus Buffers with High Noise Margin, Rise Time Accelerator 2.5mA Current Source 1.5V/1.8V/2.5V/3.3V/5V Yes Yes Yes 4 $2.40 (LTC4313CMS8-2#PBF)
8LTC4313-1Reference Circuit Available 2 2-Wire Bus Buffers with High Noise Margin, Rise Time Accelerator Slew Limited Switch 1.5V/1.8V/2.5V/3.3V/5V Yes Yes Yes 4 $2.40 (LTC4313CMS8-1#PBF)
9LTC4314 2 Pin-Selectable, 4-Channel, 2-Wire Multiplexer with Bus Buffer 1.5V/1.8V/2.5V/3.3V/5V Yes Yes Yes 10 $2.65 (LTC4314CGN#PBF)
10LTC4312 2 Pin-Selectable, 2-Channel, 2-Wire Multiplexer with Bus Buffer 1.5V/1.8V/2.5V/3.3V/5V Yes Yes Yes 10 $1.95 (LTC4312CDE#PBF)
11LTC4310-2 1 Bidirectional Hot-Swappable I2C Isolator 3V/5.5V Yes Yes Yes 5 $1.48 (LTC4310CDD-2#PBF)
12LTC4310-1 1 Bidirectional Hot-Swappable I2C Isolator 3V/5.5V Yes Yes Yes 5 $1.48 (LTC4310CDD-1#PBF)
13LTC4308 1 Low Voltage Hot Swappable Bus Buffer 1V to 2.3V/5.5V Yes Yes Yes 6 $2.15 (LTC4308CDD#PBF)
14LTC4309 2 Low Offset Hot Swappable Bus Buffer 1.8V to 2.3V/5.5V Yes Yes Yes 6 $2.25 (LTC4309CDE#PBF)
15LTC4307-1 1 High Definition Multimedia Interface (HDMI) 2-Wire Bus Buffer 2.3V/5.5V Yes No Yes 5 $2.15 (LTC4307CDD-1#PBF)
16LTC4307 1 Low Offset Hot Swappable 2-Wire Bus Buffer 2.3V/5.5V Yes Yes Yes 5 $2.15 (LTC4307CDD#PBF)
17LTC4311 1 Low Voltage I2C/SMBus Accelerator- No No Yes 8 $1.55 (LTC4311CDC#TRPBF)
18LTC4306 1 4-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering 2.7V/5.5V Yes Yes No 10 $3.50 (LTC4306CGN#PBF)
19LTC4305 1 2-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering 2.7V/5.5V Yes Yes No 10 $2.80 (LTC4305CGN#PBF)
20LTC4304 1 Hot Swappable Bus Buffer 2.7V/5.5V Yes Yes Yes 15 $2.20 (LTC4304CMS#PBF)
21LTC4303 1 Hot Swappable Bus Buffer 2.7V/5.5V Yes Yes Yes 15 $2.10 (LTC4303CMS8#PBF)
22LTC4301L 1 1V Compatible Supply-Independent Bus Buffer 1V to 2.7V/5.5V Yes No Yes 10 $2.05 (LTC4301LCMS8#PBF)
23LTC4300A-3 1 Hot Swappable Bus Buffer 2.7V/5.5V Yes No Yes 2 $1.75 (LTC4300A-3CMS8#PBF)
24LTC4301 1 Supply-Independent Bus Buffer 2.7V/5.5V Yes No Yes 10 $1.95 (LTC4301CMS8#PBF)
25LTC4302-2 1 Hot Swappable Bus Buffer 2.7V/5.5V Yes No Yes 2 $2.50 (LTC4302CMS-2#PBF)
26LTC4302-1 1 Hot Swappable Bus Buffer, Two GPIOs 2.7V/5.5V Yes No Yes 2 $2.50 (LTC4302CMS-1#PBF)
27LTC4300A-2 1 Hot swappable Bus Buffer and Accelerator Disable 2.7V/5.5V Yes No No 2 $1.75 (LTC4300A-2CMS8#PBF)
28LTC4300A-1 1 Hot swappable bus buffer 2.7V/5.5V Yes No Yes 2 $1.75 (LTC4300A-1CMS8#PBF)