Maxim makes a nice little LVDS - LVTTL receiver, the MAX9171, that uses a 3.3 V supply. Unfortunately, it doesn't seem to be in production. I only found that out after creating the part in Pulsonix. 8-( Perhaps someone else makes something similar. 73, Leon -- Leon Heller, G1HSM leon.heller at bulldoghome.com http://www.geocities.com/leon_heller 1142790510.0