器件名称TI

热搜:

产品SN74ABT1864TI
描述

The 'ABT18640 scan test devices with 18-bit inverting bus transceivers are members of the Texas Instruments SCOPETM 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 18-bit inverting bus transceivers. They can be used either as two 9-bit transceivers or one 18-bit transceiver. The test circuitry can be activated by the TAP to take snapshot samples of the data appearing at the device pins or to perform a self test on the boundary-test cells. Activating the TAP in the normal mode does not affect the functional operation of the SCOPETM bus transceivers. Data flow is controlled by the direction-control (DIR) and output-enable () inputs. Data transmission is allowed from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at DIR. can be used to disable the device so that the buses are effectively isolated. In the test mode, the normal operation of the SCOPETM 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 according to the protocol described in IEEE Standard 1149.1-1990.   Four dedicated test pins observe and 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 SN74ABT18640 is available in TI's shrink small-outline (DL) and thin shrink small-outline (DGG) packages, which provide twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area. The SN54ABT18640 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT18640 is characterized for operation from -40°C to 85°C.    

操作查看详情点击下载购买

器件类型,热量管理,热敏 - 配件

热量管理

123 >
跳至PAGE
制造商型号分类描述下载
Molex

Molex

0372100001热量管理热敏 - 配件retention mod w/out hardware
Laird Technologies - Engineered Thermal Solutions

Laird Technolog...

385832-402热量管理热敏 - 配件wpg,80,da,33,s1,00
Apex Microtechnology

Apex Microtechn...

CLAMP05热量管理热敏 - 配件clamp sip use with hs32
Apex Microtechnology

Apex Microtechn...

CLAMP02热量管理热敏 - 配件clamp dip use with hs21
Apex Microtechnology

Apex Microtechn...

CLAMP04热量管理热敏 - 配件clamp to220 use with hs29
Laird Technologies - Engineered Thermal Solutions

Laird Technolog...

520082-02热量管理热敏 - 配件peltier mod temp pwm control 10a
Laird Technologies - Engineered Thermal Solutions

Laird Technolog...

340912-01热量管理热敏 - 配件pt1000 rtd sensor for mttc-1410
Laird Technologies - Engineered Thermal Solutions

Laird Technolog...

LK-81热量管理热敏 - 配件thermoelect mod serial transistr
Laird Technologies - Engineered Thermal Solutions

Laird Technolog...

TC-18-QE-50热量管理热敏 - 配件module thermostat controller pwm
Laird Technologies - Engineered Thermal Solutions

Laird Technolog...

TC-14-MQ-70热量管理热敏 - 配件modules tea/tem accessory
Laird Technologies - Engineered Thermal Solutions

Laird Technolog...

TC-18-QC-50热量管理热敏 - 配件module thermostat contrlr on/off
Laird Technologies - Engineered Thermal Solutions

Laird Technolog...

TC-24-EC-26热量管理热敏 - 配件module ctrlr pwm high/low acd
Laird Technologies - Engineered Thermal Solutions

Laird Technolog...

L-TURBO-8热量管理热敏 - 配件thermoelect heat sink turbulator
Laird Technologies - Engineered Thermal Solutions

Laird Technolog...

TC-NTC-1热量管理热敏 - 配件thermoelect mod ntc sensor
Advanced Thermal Solutions Inc

Advanced Therma...

ATS-PP-09热量管理热敏 - 配件heatsink brass push pin 20mm
Advanced Thermal Solutions Inc

Advanced Therma...

ATS-PP-05热量管理热敏 - 配件heatsink brass push pin 13mm
Advanced Thermal Solutions Inc

Advanced Therma...

ATS-PP-08热量管理热敏 - 配件heatsink brass push pin 18mm
Advanced Thermal Solutions Inc

Advanced Therma...

ATS-PP-01热量管理热敏 - 配件heatsink brass push pin 9mm
Advanced Thermal Solutions Inc

Advanced Therma...

ATS-PPS-14热量管理热敏 - 配件heatsink SS spring 4.47mm
Advanced Thermal Solutions Inc

Advanced Therma...

ATS-PP-04热量管理热敏 - 配件heatsink brass push pin 12mm
Advanced Thermal Solutions Inc

Advanced Therma...

ATS-PP-06热量管理热敏 - 配件heatsink brass push pin 14mm
Advanced Thermal Solutions Inc

Advanced Therma...

ATS-PPS-02热量管理热敏 - 配件heatsink SS spring 3.66mm
Advanced Thermal Solutions Inc

Advanced Therma...

ATS-PP-03热量管理热敏 - 配件heatsink brass push pin 11mm
Advanced Thermal Solutions Inc

Advanced Therma...

ATS-PPS-15热量管理热敏 - 配件heatsink SS spring 5.33mm
Advanced Thermal Solutions Inc

Advanced Therma...

ATS-PPS-05热量管理热敏 - 配件heatsink SS spring 3.73mm
123 >
跳至PAGE