In SX Microcontrollers, SX/B Compiler and SX-Key Tool, peterverkaik wrote:

Instead of a HC138, you can also use a CD4052 (dual 4-to-1 analogue multiplexer)

to switch input I2C lines to 1 of 4 output I2C lines. The total lines required would

be 4 (SDA,SCL and 2 select lines). Just put 10kOhm pullup resistors on all

ingoing and outgoing I2C lines.

[url=http://www.ee.washington.edu/stores/DataSheets/cd4000/cd4051.pdf]http://www.ee.washington.edu/stores/DataSheets/cd4000/cd4051.pdf[/url]

regards peter

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