The 'BCT8245A scan test devices with octal bus transceivers are members of the Texas Instruments SCOPE^TM testability integrated-circuit family. This family of devices supports IEEE Standard 1149.1-1990 boundary scan to facilitate testing of complex circuit-board assemblies. Scan access to the test circuitry is accomplished via the 4-wire test access port (TAP) interface.

In the normal mode, these devices are functionally equivalent to the 'F245 and 'BCT245 octal bus transceivers. The test circuitry can be activated by the TAP to take snapshot samples of the data appearing at the device terminals or to perform a self test on the boundary-test cells. Activating the TAP in normal mode does not affect the functional operation of the SCOPE^TM octal bus transceivers.

In the test mode, the normal operation of the SCOPE^TM octal bus transceivers is inhibited and the test circuitry is enabled to observe and control the I/O boundary of the device. When enabled, the test circuitry can perform boundary-scan test operations as described in IEEE Standard 1149.1-1990.

Four dedicated test terminals control the operation of the test circuitry: test data input (TDI), test data output (TDO), test mode select (TMS), and test clock (TCK). Additionally, the test circuitry performs other testing functions such as parallel-signature analysis (PSA) on data inputs and pseudo-random pattern generation (PRPG) from data outputs. All testing and scan operations are synchronized to the TAP interface.

The SN54BCT8245A is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74BCT8245A is characterized for operation from 0°C to 70°C.

• Members of the Texas Instruments SCOPETM Family of Testability Products
• Octal Test-Integrated Circuits
• Functionally Equivalent to 'F245 and 'BCT245 in the Normal- Function Mode
• Compatible With the IEEE Standard 1149.1-1990 (JTAG) Test Access Port and Boundary-Scan Architecture
• Test Operation Synchronous to Test Access Port (TAP)
• Implement Optional Test Reset Signal by Recognizing a Double-High-Level Voltage (10 V) on TMS Pin
• SCOPETM Instruction Set
  • IEEE Standard 1149.1-1990 Required Instructions, Optional INTEST, CLAMP, and HIGHZ
  • Parallel-Signature Analysis at Inputs
  • Pseudo-Random Pattern Generation From Outputs
  • Sample Inputs/Toggle Outputs
• Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic and Ceramic 300-mil DIPs (JT, NT)

SCOPE is a trademark of Texas Instruments Incorporated.

• IOL (Max) (mA)
• 64
• IOH (Max) (mA)
• -8
• Technology Family
• BCT
• Rating
• Catalog
• Operating temperature range (C)
• 0 to 70

SN74BCT8245A的完整型号有：SN74BCT8245ADW、SN74BCT8245ADWR，以下是这些产品的关键参数及官网采购报价：

SN74BCT8245ADW，工作温度：0 to 70，封装：SOIC (DW)-24，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74BCT8245ADW的批量USD价格：5.675（1000+）

SN74BCT8245ADWR，工作温度：0 to 70，封装：SOIC (DW)-24，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74BCT8245ADWR的批量USD价格：4.729（1000+）

14-24-LOGIC-EVM — 支持 14 到 24 引脚 PW、DB、D、DW、NS、DYY 和 DGV 封装的通用逻辑 EVM

该 EVM 设计用于支持采用 14 至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。