October 15, 2019 John Kober Chief Financial Officer MACOM Technology Solutions Holdings, Inc. 100 Chelmsford Street Lowell, MA 01851 Re: MACOM Technology Solutions Holdings, Inc. Form 10-K for the Fiscal Year Ended September 28, 2018 Filed November 16, 2018 File No. 001-35451 Dear Mr. Kober: We have completed our review of your filings. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Sincerely, Division of Corporation Finance Office of Manufacturing