IDT 64Kb 18b Synchronous SRAM, 4KX18, TQFP, -40°C to 85°C
72Kb Synchronous SRAM, 4Kx18, 40MHz, 5V, TQFP, Surface Mount
FIFO Mem Sync Dual Depth/Width Uni-Dir 4K x 18 64-Pin TQFP T/R
