Overview

Features and Benefits

  • Improves SMBus Rise Time Transition
  • Ensures Data Integrity with Multiple Devices on the SMBus
  • Improves Low State Noise Margin
  • Auto Detect Low Power Standby Mode
  • Wide Supply Voltage Range: 2.7V to 6V
  • Low Profile (1mm) SOT-23 (ThinSOT) Package

Product Details

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

The LTC1694 allows multiple device connections or a longer, more capacitive interconnect, without compromising slew rates or bus performance, by using two bilevel hysteretic current source pull-ups.

During positive bus transitions, the LTC1694 current sources provide 2.2mA to quickly slew the SMBus line. During negative transitions or steady DC levels, the current sources decrease to 275µA to improve negative slew rate and improve low state noise margins. An auto detect standby mode reduces supply current if both SCL and SDA are high.

The LTC1694 is available in a 5-pin SOT-23 package, requiring virtually the same space as two surface mount resistors.

Applications

  • Notebook and Palmtop Computers
  • Portable Instruments
  • Battery Chargers
  • Industrial Control Application
  • TV/Video Products
  • ACPI SMBus Interface

Product Lifecycle icon-recommended 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.

Product Recommendations

LTC1694 Companion Parts

Recommended µModule Isolator

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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