SMBus/IC Accelerator

The LTC1694-1 is a dual SMBus active pull-up designed to enhance data transmission speed and reliability under all specified SMBus loading conditions. The LTC1694-1 is also compatible with the Philips I2C Bus.

The LTC1694-1 allows multiple device connections or a longer, more capacitive interconnect, without compromising slew rates or bus performance, by supplying a high pull-up current of 2.2mA to slew the SMBus or I2C lines during positive bus transitions.

During negative transitions or steady DC levels, the LTC1694-1 sources zero current. External resistors, one on each bus line, trigger the LTC1694-1 during positive bus transitions and set the pull-down current level. These resistors determine the slew rate during negative bus transitions and the logic low DC level.

The LTC1694-1 is available in a 5-pin SOT-23 package.

Applications

* Notebook and Palmtop Computers

* Portable Instruments

* Battery Chargers

* Industrial Control Application

* TV/Video Products

* ACPI SMBus Interface

* Improves SMBus/I2C™ Rise Time Transition

* Ensures Data Integrity with Multiple Devices on the SMBus/I2C

* Improves Low State Noise Margin

* Wide Supply Voltage Range: 2.7V to 6V

* Parallel Multiple LTC1694-1 Devices for Increased Drive

* Low Profile (1mm) SOT-23 (ThinSOT™) Package