I have a need for a design I am working on for a high current, high=20
voltage selectable OPEN-DRAIN or OPEN-SOURCE buffer/driver.
To be more specific I need:
* Operate over a Vcc of 5v (or less) to 18v (or more)
* 5v on the input control, up to 16v on the outputs.
* Max toggle rate of < 5KHz.
* Capable of sourcing OR sinking > 100mA continuously
* Operate as either an OPEN_DRAIN or as an OPEN_SOURCE
* Not overly cost sensitive.
* I need a total of 40 per board so up to 8 drivers per package would be OK=
..

My first thought was to use a Tri-State buffer. The data input would=20
define which direction would be the driven direction and the enable=20
cause the device to go from Hi-Z to active. Thus for an OPEN_DRAIN I=20
would have the input LOW (assuming a non-inverting buffer) and connect=20
the ENABLE signal to the controlling source. Enable active >> Output=20
driven LOW. Enable inactive >> Output OFF.

I have been unable to find a device that meets these requirements. I=20
looked at the TI UCC27524 device which has an ENABLE pin. The problem is=20
that the ENABLE is actually AND=92d with the input pin, it is NOT=20
Tri-State device.

I would greatly appreciate any suggestions of a device that I could use.

Thanks is advance for any help you can provide.

-Phil-
--=20
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