HP 1820-0092 Nixie Driver

I was taking apart some display adapters recently and I came across some Nixie display chips I hadn’t seen before, namely the HP 1820-0092. It is similar in function to chips like the 74141 – it converts 5V BCD values into high voltage outputs suitable for driving Nixie tubes. Here is a picture:

I had a bunch of them so I decided I should figure out the pinouts. Here are the results:

Leave a Reply

Your email address will not be published.

This site uses Akismet to reduce spam. Learn how your comment data is processed.