SN54ACT8990 Datasheet - Texas Instruments

SN54ACT8990 IEEE STD 1149.1 (JTAG) TAP MASTERS

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

SN54ACT8990, SN74ACT8990 TEST-BUS CONTROLLERS IEEE STD 1149.1 (JTAG) TAP MASTERS WITH 16-BIT GENERIC HOST INTERFACES SCAS190E JUNE 1990 REVISED JANUARY 1997 D Members of the Texas Instruments SCOPE ™ Family of Testability Products D Compatible With the IEEE Standard 1149.1-1990 (JTAG) Test Access Port and Boundary-Scan Architecture D Control Operation of Up to Six Parallel Target Scan Paths D Accommodate Pipeline Delay to Target of Up to 31 Clock Cycles D Scan Data Up to 232.

SN54ACT8990-etcTI.pdf