I've got some bytes flying by at 27MHz and need to latch a particular byte. I've got a byte counter going, so I'd like a binary comparator to tell me when my byte's there. I used to use the 74LS688. Anything like that around in a modern FAST logic family running at 3.3V? I need to match 19 bits. Thanks! Harold -- FCC Rules Updated Daily at http://www.hallikainen.com - Advertise on hallikainen.com - $100/year! -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist