Sunnyvale, Calif. Maxim Integrated Products has introduced the DS26900 JTAG signal multiplexer with secondary port autodetection. Maxim claims the DS26900 is the industry's first MicroTCA-compliant JTAG multiplexer with 18 independent secondary and 3 arbitrated master ports in a single chip. These can be cascaded for up to 36 secondary ports.
For simplified design and ease of use, the DS26900 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 JTAG multiplexer is suitable 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 32-bit scratchpad registers, internal pull-up/pull-down resistors, and operation up to 50 MHz. This device is available in a leaded or lead-free 20 x 20-mm, 144-pin LQFP package. It is fully specified over the -40° to +85°C extended temperature range.
Pricing: Starts at $6.50 (10,000-up, FOB USA).
Product information: DS26900
Maxim Integrated Products, 1-800-998-8800, www.maxim-ic.com