SN74ACT8990 Overview
The ’ACT8990 test-bus controllers (TBC) are members of the Texas Instruments SCOPE™ testability integrated-circuit family. This family of ponents supports IEEE Standard 1149.1-1990 (JTAG) boundary scan to facilitate testing of plex circuit-board assemblies. The ’ACT8990 differ from other SCOPE™ integrated circuits.