Charles R Pratt

US Patent:

53960327, Mar 7, 1995

Filed:

May 4, 1993

Appl. No.:

8/058553

Inventors:

Harry B. Bonham - Plano TX
Charles R. Pratt - Richardson TX
Bryan K. Douglas - Carrollton TX

Assignee:

Alcatel Network Systems, Inc. - Richardson TX

International Classification:

H01L 2302

US Classification:

174 524

Abstract:

Multi-chip module (MCM) (10) includes package body (12) having cavity (20) for accepting a plurality of devices and substrates and seal ring (26) to ensure the integrity of the package. Lead frame (18) having a plurality of individual leads (28) is coupled to the package body (12). Plurality of test points (38) or test pins (30) are located on the external surface of package body (12). A plurality of bond pads are located in cavity (20), including a first set or tier and a second set or tier of bond pads for electrically coupling the devices and substrates in the cavity (20) external to package body (12). The first set or tier of bond pads provides electrical connection between the individual devices in MCM (10) to plurality of test points (38) or test pins (30), and the second set or tier of bond pads provides electrical connection between the individual devices in MCM (10) and plurality of individual leads (28).