Driving BBD from MCU

[ErnstHot]

I need to drive the clock inputs on a MN3207 bucket brigade device from an MCU. The clock voltage needs to be 14/15 of the MN3207's Vcc and the input capacitance is relatively high, so I need to provide enough current to overcome that at high frequencies.

This circuit(PDF) uses a CD4049 to buffer the clock signals, but that needs a higher input signal voltage than an MCU can provide on it's own and so I'm wondering if there's any reason I can't use a transistor to drive the MN3207 directly from the MCU? What would such a circuit look like, other than obviously the transistor? Is there a simple and clever way to get the inverse clock as well without using an extra pin on the MCU?

(All this is subject to my possibly flawed understanding)

Thanks

[HalfSpace]

Hi ErnstHot,

You could drive the MN3207 with a mosfet driver IC like the TC4428A or a lower power one. They are 3.3V compatible inputs, inverting and non-inverting outputs and can output up to 18V at high capacitive loads.

HalfSpace