SRAM Chip Async Single 3.3V 4M-Bit 256K x 16 12ns 48-Pin CABGA Tube/Tray
4Mb Asynchronous SRAM, 16b Word, 18b Address, 3.3V, TFBGA, Surface Mount
IDT 4Mb 18b Address Bus Width SRAM
SRAM Chip Async Single 3.3V 4M-Bit 256K x 16 12ns 48-Pin CABGA T/R