If it's a bi-directional signal, look at LCX3245 Otherwise look at VHC - can take upto 7 volts on I/P, whatever the supply to the chip is. Steve Lawther ______________________________ Reply Separator _________________________________ Subject: [OT} 5V to 3V Author: Frans Gunawan [SMTP:f@POBOXES.COM] at Exchange-UK Date: 10/08/98 11:58 Does anyone know how to interface 5V databus to 3V and vice versa? any special chip? thanks www.poboxes.com/f f