1
\$\begingroup\$

I'm currently working on a school project that requires the use of an 8-bit shift register. I collected the components for the project on the last day of school rather hurriedly, and I picked the first 8-bit shift register that I found, which was the CMOS 4014B IC. I'm now trying to wire it up, and I need it to be a SIPO shift register. I can find almost no resources for the chip's operation. The datasheet suggests that the ABCDEFGH pins are all parallel input pins; however the chip also has a serial input pin and a P/S control pin. I don't fully understand what the datasheet says about the P/S pin but it sounds to me that it enables serial inputs to the chip. Can I use it as a SIPO shift register? If so, which pins are used for the parallel outputs?

\$\endgroup\$
2
\$\begingroup\$

No, there are no parallel outputs on this chip.

enter image description here

As you can see from the truth table below, when Parallel/Serial in is low a rising clock edge shifts data in from the serial input. When it is high, a rising clock edge loads from the parallel inputs. The only way you can get data out is from Q8, Q7 or Q6.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.