View 74lvc h244a 2 datasheet:

INTEGRATED CIRCUITS 74LVC244A/74LVCH244A Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State)title Product specification 1998 May 20 Supersedes data of 1996 Sep 06 IC24 Data Handbook Philips Semiconductors Philips Semiconductors Product specification Octal buffer/line driver with 5-volt 74LVC244A tolerant inputs/outputs (3-State) 74LVCH244A FEATURES DESCRIPTION The 74LVC244A/74LVCH244A is a high-performance, low-power, • 5-volt tolerant inputs/outputs, for interfacing with 5-volt logic low-voltage, Si-gate CMOS device, superior to most advanced • Supply voltage range of 2.7V to 3.6V CMOS compatible TTL families. • Complies with JEDEC standard no. 8-1A Inputs can be driven from either 3.3V or 5V devices. In 3-State operation, outputs can handle 5V.