SN74ABTH18502A Datasheet | Texas Instruments

SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E - AUGUST 1993 - REVISED DECEMBER 1996 D Members of the Texas Instruments SCOPE ™ Family of Testability Products D Members of the Texas Instruments Widebus ™ Family D patible With the IEEE Standard 1149.1-1990 (JTAG) Test Access Port and Boundary-Scan Architecture D UBT ™ (Universal Bus Transceiver) bines D-Type Latches and D-Type Flip-Flops for Operation in Transparent, Latched, or Clocked Mode D Bus Hold on Data Inputs Eliminates the Need for External Pullup Resistors D B-Port Outputs of ’ABTH182502A Devices Have Equivalent 25-Ω Series Resistors, So No External Resistors Are Required D State-of-the-Art EPIC-ΙΙB ™ Bi CMOS Design D One Boundary-Scan Cell Per I/O Architecture Improves Scan Efficiency D SCOPE Instruction Set - IEEE Standard 1149.1-1990 Required Instructions and Optional CLAMP and HIGHZ - Parallel-Signature Analysis at Inputs - Pseudo-Random Pattern Generation From Outputs - Sample Inputs/Toggle Outputs - Binary Count From Outputs - Device Identification - Even-Parity Opcodes D Packaged in 64-Pin Plastic Thin Quad Flat (PM) Packages Using 0.5-mm Center-to-Center Spacings and 68-Pin Ceramic Quad Flat (HV) Packages Using 25-mil Center-to-Center Spacings SN54ABTH18502A, SN54ABTH182502A . . . HV PACKAGE (TOP VIEW) 1A2 1A1 1OEAB GND 1LEAB 1CLKAB TDO VCC NC TMS 1CLKBA 1LEBA 1OEBA GND 1B1 1B2 1B3 1A3 1A4 1A5 GND 1A6 1A7 1A8 1A9 NC VCC 2A1 2A2 2A3 GND 2A4 2A5 2A6 9 8 7 6 5 4 3 2 1 68 67 66 65 64 63 62...