SN54ACT8990, SN74ACT8990 TEST-BUS CONTROLLERS IEEE.
Texas Instruments
SN74ACT8990 - IEEE STD 1149.1 (JTAG) TAP MASTERS
SN54ACT8990, SN74ACT8990 TEST-BUS CONTROLLERS IEEE STD 1149.1 (JTAG) TAP MASTERS WITH 16-BIT GENERIC HOST INTERFACES SCAS190E – JUNE 1990 – REVISED JA.