2006-08-18 16:27:48 · 3 answers · asked by affa a 1 in Consumer Electronics ➔ Other - Electronics
The 74138 can demux a SINGLE BIT into one of eight channels. In this role you use the A B & C inputs to select one of the output channels, and one of the three enable pins as the data input. For a non-inverting dumux, tie G1 and either of the G NOT inputs high, then use the other G NOT input as Data In. The output you select will then follow Data In, and the other seven outputs will remain high.
2006-08-18 16:38:58 · answer #1 · answered by Jay S 5 · 0⤊ 0⤋
Set G1 high, G2, G3 Low, and what ever is on the A,B and C pins determines what output (Y0 - Y7) goes Low. example A = 1, B= 0, C = 1, would make Y5 go low. A = 0, B = 1, C = 0 would make Y2 go low.
here is a link to the data sheet: http://parlweb.parl.clemson.edu/~wjones/371/chips/74138.pdf#search='74138%20data%20sheet'
2006-08-19 03:26:08 · answer #2 · answered by justme 7 · 0⤊ 0⤋
74ls138 Datasheet
2016-11-12 08:08:09 · answer #3 · answered by ? 4 · 0⤊ 0⤋