74LS642 Octal Bus Transceiver IC

Bus transceivers designed as electronic tri-state bi-directional devices that allows the flow of data between two points.  This makes them compatible with bus-oriented systems or the bi-directional (input or output) control of interface circuitry. Moreover,  Bus transceiver exist as inverting or non-inverting, common examples are 74LS243 & LS242 IC series. Bus tranceivers are designed specifically for asynchronous two-way communication between two data buses or input/output device. The transceiver allows for the transmission of data from terminals A to terminals B or the reverse depending on the logic level at the direction-control input. These IC widely used to provide bidirectional, input or output control, of either digital or analogue devices to a common shared data bus.