Need a voltage regulator/converter... for a TTL line ckt

[krytar]

Hi All,

I'm designing a SP8T Switch for a switch filter bank. There are 3 TTL lines (A2 A1 A0) from the decoder.

In oder to put both switches on the same side, I need a circuit to make the A2 TTL line to behave in reverse. If High-Level Input Voltage (Vh>2.0 V) the circuit will put out <.8V or an open ckt; if the Low-Level Input Voltage (Vl<.8V) the circuit will put out a voltage >2.0V.

Thanks, Krytar

 

[nbucska]

What you need is called "inverter". The 74_04 contains six
of them. ( The _ may mean nothing,S,LS,ALS,AS,F,CHT, etc.)


<nbucska@pcperipherals DOT com> subj: eng-tips
read FAQ240-1032

 

[emmgon]

Yes you need an inverter. But I am wondering that is the filter bank for? What signal are you going to input into the SP8T switch?

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Emmanuel A. Gonzalez, E.C.E.