Members of the Texas Instruments

SCOPE E Family of Testability Products

Members of the Texas Instruments

Widebus E Family

Compatible With the IEEE Standard

1149.1-1990 (JTAG) Test Access Port

and Boundary-Scan Architecture

UBT E (Universal Bus Transceiver)

Combines D-Type Latches and D-Type

Flip-Flops for Operation in Transparent,

Latched, or Clocked Mode

Bus Hold on Data Inputs Eliminates the

Need for External Pullup Resistors

B-Port Outputs of ’ABTH182502A Devices

Have Equivalent 25-W Series Resistors, So

No External Resistors Are Required

State-of-the-Art EPIC-IIB E BiCMOS Design

One Boundary-Scan Cell Per I/O

Architecture Improves Scan Efficiency

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

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