AN10441_15 Datasheet, PDF (1/7 Pages) NXP Semiconductors – Level shifting techniques in I2C-bus design

AN10441
Level shifting techniques in I²C-bus design
Rev. 01 — 18 June 2007
Application note
Document information
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Content
Keywords
I2C-bus, level shifting
Abstract
Logic level shifting may be required when interfacing legacy devices with
newer devices that use a smaller geometry process. For bidirectional bus
systems like the I²C-bus, such a level shifter must also be bidirectional,
without the need of a direction control signal. The simplest way to solve
this problem is by connecting a discrete MOS-FET to each bus line.