Integrated-circuit support device employed in a system for selecting high- reliability integrated circuits

摘要

The support device permits the use of only one type of plate for selecting the different types of integrated circuits having spacing values of 0.3 inch or 0.4 inch or 0.6 inch between the two rows of terminal pins. The plate consists of a parent card in the form of a double-face printed circuit and of a plurality of daughter cards in the form of a multilayer circuit. The integrated circuits are supported by tulip-type plug sockets disposed at intervals in a number of rows in order to conform to the different spacing values. Each dynamic signal is distributed to the integrated-circuit terminal pins having the same reference number via a protection circuit comprising a diode in series, a voltage-dividing bridge and a diode connected in shunt between the common point and ground. Provision is made for U-link matching means in order to apply instead of the dynamic signal a direct-current supply or a ground when so required by the type of integrated circuit to be selected.