i have a circuit with three ICs (so far), with output from one serving as input to the other and so on. the first is a PIC which passes a logical HIGH or LOW to an OR gate, and finally to a D-flip-flop. the problem is that the HIGH output from the PIC is about 3.8V. this is acceptable to TTL but the output from the OR gate is less than 2V.
<image here>
does any1 have an idea of how to make all the outputs from each IC to be only either 5V or 0V (HIGH or LOW)?
i once used a voltage regulator to accomplish a similar goal but i was having voltages that were higher than 5V volts. the voltage regulator made them five volts. right now i am thinking of using a BJT like PN2222 to accomplish that but i want to know if there is another way, an easier way.
unless the problem is from how i connect to my IC inputs and outputs (i use pull-down resitors), this should be a problem faced everyday by others.
any suggestion is appreciated
<image here>
does any1 have an idea of how to make all the outputs from each IC to be only either 5V or 0V (HIGH or LOW)?
i once used a voltage regulator to accomplish a similar goal but i was having voltages that were higher than 5V volts. the voltage regulator made them five volts. right now i am thinking of using a BJT like PN2222 to accomplish that but i want to know if there is another way, an easier way.
unless the problem is from how i connect to my IC inputs and outputs (i use pull-down resitors), this should be a problem faced everyday by others.
any suggestion is appreciated
Attachments
-
24.9 KB Views: 52