JTAG Connectors, Joint Test Action Group

Joint Test Action Group, also known as JTAG, is the common name for IEEE standard 1149.1. This standard defines a particular method for testing board-level interconnects, which is also called Boundary Scan. In short, JTAG was created as a way to test for common problems, but lately has become a way of configuring devices. The JTAG hardware interprets information from five different signals: TDI (Test Data In), TDO (Test Data Out), TMS (Test Mode Select), TCK (Test Clock), and TRST (Test Report-optional).

The primary advantage of boundary-scan technology is the ability to observe data at the device inputs and control the data at the outputs independently of the application logic. Simple tests can find manufacturing defects such as unconnected pins, a missing device, an incorrect or rotated device on a circuit board, and even a failed or dead device.

jtag logo, joint test action group logo

Samtec offers both JTAG connector and cable solutions.

Standard Connectors

Standard Connectors with Pin 7 Removed

Suggested Cable Mates

jtag connectors image

Compliant Series

  • EJH – .100" Shrouded IDC Ejector Header
  • FTSH – .050" Micro Terminal Strip
  • HHSC – .100" JTAG Ribbon Coax Cable Assembly
  • HMTSW – .100" High-Temp Variable Post Height Terminal Strip
  • HTSS – .100" High-Temp Shrouded Terminal Strip
  • HTST – .100" High-Temp Shrouded Terminal Strip, Cable Mate
  • IDSD – .100" Slim Body Double Row, IDC Ribbon Cable Assembly, Socket
  • IDSS – .100" Slim Body Single Row, IDC Ribbon Cable Assembly, Socket
  • MTLW – .100" Low Profile Variable Post Height Terminal Strip
  • MTSW – .100" Variable Post Height Terminal Strip
  • TLW – .100" Low Profile Terminal Strip
  • TSM – .100" Surface Mount Terminal Strip
  • TSSH – .100" End Shrouded Terminal Strip
  • TST – .100" Shrouded Terminal Strip, Cable Mate
  • TSW – .100" Terminal Strip
  • ZSS – .100" Shrouded Elevated Terminal Strip
  • ZST – .100" Shrouded Elevated Terminal Strip, Cable Mate

Thermal Shock testing isn’t unique to the connector world, but it does play a big role in the qualification testing that Samtec puts all connectors through before they are released for production. Chances are likely that you thermally shock many items per day and don’t give it a ...
Samtec.com users have had the ability to search competitor cross references for over a year as I write this post, however we received some feedback that this was not always easy to access since it was a direct integration with our search. Our users were looking for more of a stan...
FMC. FMC+. XMC. PC/104 . . . Does the list of Industry Standards ever stop? Like TLAs, probably not! What are Industry Standards? They are formal specifications that simplify differences in popular applications. The purpose is improved compatibility, performance, and efficiency a...
In March 2019, we rolled out a new homepage panel, a few new content experiences, and a new level of interactivity to our locations search. Here are the major updates to Samtec.com for March 2019. New High Speed Cable Homepage Panel On top of our core offering of board-to-board p...
Most companies are looking for ways to increase efficiency and thus, the bottom line. One way to do that is with Samtec’s new Low-Profile, Right-Angle 75 Ω BNC connector (BNC7T-BM1D) engineered for pick-and-place assembly, and 12G-SDI performance. This Low-Profile, Right-Angle 75...