Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement
Patent
1990-10-03
1991-10-29
Picard, Leo P.
Electricity: conductors and insulators
Conduits, cables or conductors
Preformed panel circuit arrangement
174262, 174266, 439 68, 439 70, 361403, H05K 100
Patent
active
050618253
ABSTRACT:
A printed cirucit board design capable of accepting both first and second versions of an IC device. First and second IC devices (10, 20) have pins disposed along respective first and second rectangular peripheries (12a-b and 15a-b; 22a-b and 23a-b). Each pin on the first IC devices has a functional counterpart pin on the second IC device. The board configuration contains pads in first and second arrays (32a-b and 35a-b; 32a, 32c, 33a-b) that correspond to the pins on the first and second IC devices. At least some of the pads (32b) of the first array do not physically conicide with pads in the second array and are located within the rectangle defined by the second array. Each non-overlapping pad in the first array is connected by a circuit board trace (40) to a respective pad in the second array such that each circuit board trace joins two pads corresponding to counterpart pins.
REFERENCES:
patent: 3780431 (1973-12-01), Feeney
patent: 4037047 (1977-07-01), Taylor
patent: 4467400 (1984-08-01), Stopper
patent: 4854039 (1989-08-01), Wendt
Chips and Technologies Inc.
Korka Trinidad
Picard Leo P.
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