The SN74LS245NSR is an octal bus transceiver IC manufactured by Texas Instruments. It is a high performance, low-power device that is designed to provide a high speed differential bus transceiver with 3-state outputs. The device has 20 pins and features an active low output enable (OE) terminal for easy expansion of the data bus. It is designed for use in high-speed data communication systems, and features fast propagation delays, low quiescent current, and low power dissipation when disabled. It is ideal for use in a range of applications, including logic buffers, line drivers, line transceivers, and signal buffering.