LTC1694-1

Improves SMBus/I2CTMRise Time Transition
Ensures Data Integrity with Multiple Deviceson the SMBus/I2C
Improves Low State Noise Margin
Wide Supply Voltage Range: 2.7V to 6V
Tiny 5-Pin SOT-23 Package
Parallel Multiple LTC1694-1 Devicesfor Increased Drive

The LTC^®1694-1 is a dual SMBus active pull-up designedto enhance data transmission speed and reliability underall specified SMBus loading conditions. The LTC1694-1 isalso compatible with the Philips I2C Bus.

The LTC1694-1 allows multiple device connections or alonger, more capacitive interconnect, without compro-mising slew rates or bus performance, by supplying a highpull-up current of 2.2mA to slew the SMBus or I2C linesduring positive bus transitionsDuring negative transitions or steady DC levels, theLTC1694-1 sources zero current. External resistors, oneon each bus line, trigger the LTC1694-1 during positivebus transitions and set the pull-down current level. Theseresistors determine the slew rate during negative bustransitions and the logic low DC level.

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