IS61QDPB44M18B/B1/B2 IS61QDPB42M36B/B1/B2 4Mx18, 2.
IS61QDPB44M18B1 - 72Mb QUADP SYNCHRONOUS SRAM
IS61QDPB44M18B - 72Mb QUADP SYNCHRONOUS SRAM
IS61QDPB44M18B2 - 72Mb QUADP SYNCHRONOUS SRAM