July 13 (Reuters) - U.S. semiconductor maker Analog Devices Inc said on Monday it offered to buy Maxim Integrated Products Inc, an industry peer, for $20.91 billion in an all-stock deal.

Under the terms, Maxim stockholders will receive 0.630 of a share of Analog Devices stock for each share of Maxim common stock they hold at the closing of the transaction, the companies said in a statement. (Reporting by Subrat Patnaik in Bengaluru; Editing by Anil D'Silva)