Hi,

I have to drive a serial to parallel shift converter 4094 chip.

4094 has clock and serial data inputs and one strobe input that forces the converted data to the show at the output when raised.

The clock, data and strobe are all coming from 8951 ports pulled high to +5v rail same as that of micro.

The 4094 which is interfaced with micro thru above three signals is at 12 power supply rail. The ground (-ive) of the two rails, (micro and 4094 is same).

same +12 V goes directly to 4094 and also to 7805 for micro's +5v.

micor and 4094 boards are 3 meters apart placed.

I want to use a pair of two transistors on each input as buffer in order to isolate 4094 from micro.

Is that right ??

Thank you

Babar