View 74lvc543a 3 datasheet:

INTEGRATED CIRCUITS 74LVC543A Octal D-type registered transceiver (3-State) Product specification 2000 Jun 21 Supersedes data of 1998 Jul 31 IC24 Data Handbook Philips Semiconductors Philips Semiconductors Product specification Octal D-type registered transceiver (3-State) 74LVC543A FEATURES DESCRIPTION The 74LVC543A is a high-performance, low-power, low-voltage, • 5-volt tolerant inputs/outputs, for interfacing with 5-volt logic Si-gate CMOS device and superior to most advanced CMOS • Supply voltage range of 1.2 V to 3.6 V compatible TTL families. • Complies with JEDEC standard no. 8–1A The 74LVC543A is an octal registered transceiver containing two sets of D-type latches for temporary storage of the data flow in • CMOS low power consumption either direction. Separa