Adaptor card with pass-through and non pass-through vias

Details Adaptor card with pass-through and non pass-through vias Adaptor card with pass-through and non pass-through vias

1994-01-27

1995-10-24

Ramsey, Kenneth J.

Electrical connectors

Preformed panel circuit arrangement, e.g., pcb, icm, dip,...

With provision to conduct electricity from panel circuit to...

439 75, H01L 2352

Patent

active

054605318

ABSTRACT:
An interconnect structure is provided for converting or adapting select signals sent between a printed circuit board (PCB) and an electrical component. The interconnect structure comprises an adapter card placed between the PCB and the electrical component, wherein the adapter card includes one or more pass-through vias and non pass-through vias extending completely through the adapter card in parallel spaced relation to one another. Pass-through vias are used to couple signals having critical timing paths between the electrical component and the PCB without substantially modifying or changing the critical path switch points. The pass-through vias also provide connection of signals of non critical timing between the PCB and the component. A signal converter may be used to convert non-critical signals and place those signals at select pins upon the electrical component. Thus, the adapter card is well suited for providing conversion to newer, updated components which are pin-for-pin compatible with, and which operate at dissimilar voltages from, older components. The adapter card performs all necessary signal conversion without requiring modification to the larger PCB.

REFERENCES:
patent: 3340439 (1967-09-01), Henschen et al.
patent: 3568001 (1971-03-01), Straus
patent: 4516816 (1985-05-01), Winthrop
patent: 4912401 (1990-03-01), Nady, II et al.

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