JTAG Technologies

We are boundary scan.

JT 2122/MPV DIOS module

The JT 2122/MPV DIOS (digital I/O scan module) increases the coverage and improves the diagnostic resolution of boundary-scan testing by extending test access to connectors and/or test points. JT 2122/MPV DIOS provides bi-directional parallel-scan access to up to 128 or 133 I/Os.

The TAP signals can be accessed via the 168 pin module connector or a separate 10-pin connector. A TAP-out can be used to daisy-chain to another DIOS module or to a scan chain on the target board.

  • Low cost
  • Increase test coverage
  • Improve diagnostic resolution

Product tabs



  • High-channel count DIOS system
  • Small, low-profile package is ideal for mounting 'in-fixture'
  • Compatible with JT 2702/DDC break-out board