Texas Instruments SN54ABT8646 Scan Test Devices With Octal Bus Transceivers And Registers SNJ54ABT8646FK

The SN54ABT8646 is a scan test device featuring octal bus transceivers and registers, designed for use in complex circuit-board assemblies. It is compatible with the IEEE Standard 1149.1-1990 for boundary-scan testing, allowing for effective testing and debugging of integrated circuits. The device operates in normal mode as a bus transceiver, functionally equivalent to the ,ÄôF646 and ,ÄôABT646, while also providing advanced test capabilities through a 4-wire test access port (TAP). This device includes two boundary-scan cells per I/O for enhanced flexibility and supports various test operations such as parallel-signature analysis and pseudorandom pattern generation. The SN54ABT8646 is characterized for military temperature ranges from -55¬8C to 125¬8C, making it suitable for demanding applications. It is available in multiple package options, including the 28-pin LCCC (FK) package. The transceiver's operation is controlled by output-enable and direction inputs, allowing for real-time data transfer between buses.