The IS61QDB24M18A-300M3L from ISSI, Integrated Silicon Solution Inc is a synchronous quad SRAM memory Integrated Circuit with a 72 Mbit parallel interface, 300 MHz, 1.48 ns, in a 165-LFBGA (15x17) package.
The IS61QDB24M18A-300B4LI from ISSI, Integrated Silicon Solution Inc is a synchronous quad SRAM memory Integrated Circuit with a 72 Mbit parallel interface, 300 MHz, 1.48 ns, in a 165-LFBGA (13x15) package.
The IS61QDB24M18A-250B4LI from ISSI, Integrated Silicon Solution Inc is a synchronous QUAD SRAM Integrated Circuit with 72 Mbit parallel memory, 250 MHz clock and 1.8 ns access time, in a 165-LFBGA (13x15) package.