Maxim touts MicroTCA-Compliant JTAG signal multiplexer

The world's first MicroTCA-compliant single-chip JTAG signal multiplexer has been introduced by Maxim Integrated Products. The DS26900 provides 3 arbitrated master ports and 18 independent secondary ports, which can be cascaded for up to 36 secondary ports. For simplified design and ease of use, this device provides port autodetection that allows the master to detect device presence on secondary ports, as well as transparent communication between an arbitrated master and a selected secondary port. The DS26900 is ideal for MicroTCA applications, AdvancedMC carrier blades, system-level diagnostics, test equipment, board-level JTAG applications, and ATCA applications.

An efficient solution for star architecture JTAG, the DS26900 also features two 32bit scratchpad registers, internal pullup/pulldown resistors, and operation up to 50MHz. This device is available in a leaded or lead-free, tiny, 20mm x 20mm, 144pin LQFP package. It is fully specified over the -40° C to 85°C extended temperature range.