The present integrated circuit package provides both a high density of conductor poles, and reduced crosstalk noises between the conductor poles. The conductor poles are received within holes in an insulating substrate. The insulating substrate has a laminated, multi-layer ceramic substrate structure comprising insulating plates having metallized layers thereon which constitute a portion of the walls of the holes. In addition, insulating layers for insulating the metallized layers from the conductor poles are formed within a selected number of the holes.