SRAM Chip Async Dual 5V 256K-Bit 32K x 8 35ns 68-Pin PLCC T/R
256Kb Parallel RAM, 35ns Access Time, 5V 5.5V, Surface Mount PLCC
SRAM Chip Async Dual 5V 512K-Bit 64K x 8 35ns 84-Pin PLCC T/R
256Kb Parallel RAM, 55ns Access Time, 5V, 5.5V, 0°C to 70°C, PLCC
IC SRAM 256KBIT 35NS 68PLCC