SparkFun Electronics will be closed in observance of memorial day on Monday, May 29th. We will resume normal business hours on Tuesday, May 30th. Any orders placed after 2pm Mountain Time on Friday, May 26th will process and ship out on Tuesday, May 30th.


Member Since: September 10, 2011

Country: United States


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  • Is it essential that CTS/DSR are both pulled high before power is applied? Is it sufficient if they are pulled high from the same supply voltage, therefore only pulled high as power is applied???

    I am tossing up between the ADH8066 and the SM5100B, prefer the ADH8066 as it has sim on-board which means less discrete components and less board space, however I have already used the SM5100B successfully and it didn’t seem to care about logic levels on pins before power was applied.

No public wish lists :(