JT 2124/F168 DIOS module

The JT 2124/F168 DIOS module is a highly configurable 128 channel DIMM DIOS in the familiar 168 pin format. It is similar to the JT 2122/MPV but has several enhanced features such as the ability to program I/O thresholds across a block of 16 channels and hot swap.


  • Flexible threshold programming
  • Increases fault coverage
  • High channel count per module
  • Compact high channel count unit with group programmable voltage thresholds
  • Compatible with JT2702/DDC channel break-out module
  • Improves fault coverage via connector and/or test-point access

Use JT2124 DIMMs in conjunction with a JT2702 DIMM carrier to provide low-cost high channel count I/O within custom test fixtures where different voltage logic is needed. For example a generic test system comprising PSUs, JTAG Controller/Pod, DIOS modules, relays etc. can be built-in into a fixture-kit with ‘Bed Of Nails’ test adapters that may be built as ‘personality modules’ for each board type.

  • 128 independent I/O channels
  • Maximum sustained TCK rate 40 MHz
  • I/O input threshold adjustable from 0.0-4.1V, programmable per 16-pin segment
  • I/O voltage output high is 1.5-3.6V, programmable per block of 16 pins
  • I/Os are configurable with pull-up or pull-down resistors
  • Power supply voltage range is 0.9-5.5V

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