The 74HC245;74HCT245 are 8-bit transceivers with 3-state outputs. The device featuresan output enable (OE) and send/receive (DlR) for direction control. A HiGH on OE causes theoutputs to assume a high-impedance OFf-state. inputs include clamp diodes. This enables theuse of current limiting resistors to interface inputs to voltages in excess of Vcc.