Signetics have announced that they will discontinue the following 
logic families:

std. ttl 74xx 
ls ttl   74lsxx	<-------------
Shottkey 74sxx  <-------------
acl 	 74AC/ACTxx
10Kecl family.

In addition, the following is a partial list of devices that will be 
obsoleted from the continued product families:
74f13, 74f83, 74f151, 74f160a, 74f162a, 74f168, 74f190, 74f192, 
74f251, 74f257, 74f258, 74s189, 
82s09, 82s19, 82s185


I believe they are the first manufacturer to announce the removal of 
whole logic families.

							Pat.