 LOWELL, Mass.--BUSINESS WIRE--MACOM Technology Solutions Holdings, Inc. MACOM NASDAQ: MTSI, a leading supplier of semiconductor products, today announced the appointment of John Ritchie as an independent Director. Mr. Ritchie brings 25 years of experience and leadership in the networking equipment and technology industry to MACOMs Board of Directors. I am pleased to welcome John to our Board of Directors, said John Ocampo, MACOMs Chairman of the Board. John has a distinguished care 