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I think this is a one of the octal bus transceiver. This is designed for asynchronous two-way communication between data buses. The control-function implementation
minimizes external timing requirements. If its correct means give me your project details I will give more information about your project and the IC.
Hope it is 74HCT245. You are sitting in front of a pile up of information on the net. You just need to google it. Any ways instead asking such silly questions you may have a look at the datasheet yourself. Good luck
Octal 3-State Noninverting Bus Transceiver With LSTTL-Compatible Inputs
The 74HCT245 is identical in pinout to LS245. The device has TTL-Compatible Inputs. The HCT245 is a 3-state noninverting transceiver that is used for 2-way asynchronous Communication between data buses. The device has an active-low Output Enable pin, which is used to place the I/O ports into high-impedance states. The Direction control determines whether data flows from A to B or from B to A. By ON Semiconductor