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
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.
- Notebook and Palmtop Computers
- Portable Instruments
- Battery Chargers
- Industrial Control Application
- TV/Video Products
- ACPI SMBus Interface
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
R345 Reliability Data3/22/2018
SOT-23 SMBus Fan Speed Controller Extends Battery Life and Reduces Noise5/1/2000 LT Journal
Smart Battery Charger Is Programmed via the SMBus11/1/1999 LT Journal
LTC1694 Companion Parts
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.View our quality and reliability program and certifications for more information.
|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LTC1694CS5#TRMPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|LTC1694CS5#TRPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|LTC1694IS5#TRMPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|LTC1694IS5#TRPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|Wafer Fabrication Data||R345 Reliability Data|
Sample & Buy
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Buy Now Pricing
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