IDT 72403L10P 256b 4b Unidirectional Asynchronous SRAM
FIFO Mem Async Dual Depth/Width Uni-Dir 64 x 4 16-Pin PDIP Tube
IDT 72403L10DB 64X4 256b Asynchronous 4b Word Size CDIP Package
64 x 4 AsyncFIFO w/Output Enable, 5.0V
64X5 High Speed Cmos Fifo