sleekmaleeq
New Member
Hi,
Does anyone know how to cascade the 74148 (8 line-to-3 line priority encoder) IC to obtain a 16 line -to- 4-line encoder with a separate output pin for indicating when a valid data is available(ie when a button is depressed?
I could not get my hand on any keyboard encoder chip around here that's why I have resolved to usning the 74148.
Any suggestion would be appreciated.
I added a cct diagram of an idea i stumbled upon sometime ago(that did not work for me at least!). I though it might be of help in explaining what I need.
Thanks
Maleeq
Nigeria
Does anyone know how to cascade the 74148 (8 line-to-3 line priority encoder) IC to obtain a 16 line -to- 4-line encoder with a separate output pin for indicating when a valid data is available(ie when a button is depressed?
I could not get my hand on any keyboard encoder chip around here that's why I have resolved to usning the 74148.
Any suggestion would be appreciated.
I added a cct diagram of an idea i stumbled upon sometime ago(that did not work for me at least!). I though it might be of help in explaining what I need.
Thanks
Maleeq
Nigeria