SN54ACT8990 测试总线控制器

The 'ACT8990 test-bus controllers (TBC) are members of the Texas Instruments SCOPETM 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 SCOPETM integrated circuits. Their function is to control the JTAG serial-test bus rather than being target boundary-scannable devices.

The required signals of the JTAG serial-test bus - test clock (TCK), test mode select (TMS), test data input (TDI), and test data output (TDO) can be connected from the TBC to a target device without additional logic. This is done as a chain of IEEE Standard 1149

	SN54ACT8990
Voltage Nodes(V)	5
Vcc range(V)	4.5 to 5.5
Input Level	TTL
Output Level	CMOS
Rating	Military
Technology Family	JTAG

SN54ACT8990 特性

• Members of the Texas Instruments SCOPETM Family of Testability Products
• Compatible With the IEEE Standard 1149.1-1990 (JTAG) Test Access Port and Boundary-Scan Architecture
• Control Operation of Up to Six Parallel Target Scan Paths
• Accommodate Pipeline Delay to Target of Up to 31 Clock Cycles
• Scan Data Up to 232 Clock Cycles
• Execute Instructions for Up to 232 Clock Cycles
• Each Device Includes Four Bidirectional Event Pins for Additional Test Capability
• Inputs Are TTL-Voltage Compatible
• EPICTM (Enhanced-Performance Implanted CMOS) 1-m Process
• Packaged in 44-Pin Plastic Leaded Chip Carrier (FN), 68-Pin Ceramic Pin Grid Array (GB), and 68-Pin Ceramic Quad Flat Packages (HV)

SN54ACT8990 芯片订购指南

器件	状态	温度	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
SNJ54ACT8990GB	ACTIVE	-55 to 125	273.13 | 1ku	CPGA (GB) | 68	1 | JEDEC TRAY (5+1)
SNJ54ACT8990HV	ACTIVE	-55 to 125	273.13 | 1ku	CFP (HV) | 68	1 | TUBE

SN54ACT8990 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
SNJ54ACT8990GB	TBD	POST-PLATE	N/A for Pkg Type	SNJ54ACT8990GB	SNJ54ACT8990GB
SNJ54ACT8990HV	TBD	Call TI	N/A for Pkg Type	SNJ54ACT8990HV	SNJ54ACT8990HV

SN54ACT8990 应用技术支持与电子电路设计开发资源下载

1. SN54ACT8990 数据资料 dataSheet 下载.PDF
2. TI 德州仪器特殊逻辑产品选型与价格 . xls
3. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
4. Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
5. TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
6. Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
7. CMOS Power Consumption and CPD Calculation (PDF 89 KB)
8. Designing With Logic (PDF 186 KB)
9. Live Insertion (PDF 150 KB)
10. Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
11. Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
12. HiRel Unitrode Power Management Brochure (PDF 206 KB)
13. LOGIC Pocket Data Book (PDF 6001 KB)
14. HiRel Unitrode Power Management Brochure (PDF 206 KB)
15. Logic Cross-Reference (PDF 2938 KB)