JT 2139 TAP Isolator

JT 2139 TAP Isolator Description:

The JT 2139 is a TAP signal isolation module designed for use in 'combinational' test systems that utilise multiple instrument interfaces. To avoid parasitic capicitance effects and/or unwanted ground loops the JT 2139 can be used to completely galvanically isolate any JTAG Technologies boundary-scan controller from the remainder of the instrumentation system.

• Galvanically isolates TAP signals
• Simple compact design
• Universally applicable

Applications:

Use in ATEs to fully isolate JTAG/boundary-scan TAP signals from the remainder of the test system. Use of TAP isolation modules avoids the potential for poor functional test measurements due to stray [test] system impedances.

Benefits:

• Small design fits easily inside test fixtures
• One per TAP - only install the number you need per application
• Basic 5V power supply
• Full relay isolation per TAP signal

Specifications:

• Dimensions 36W x 145L x 12H mm
• Weight 40 grams
• 4 x 4mm mounting holes
• Relay separation for all JTAG outputs (TDI, TMS. TCK, TRST) AW, and User signals