CY7C408A Datasheet | Cypress

1CY 7C40 9A CY7C408A CY7C409A 64 x 8 Cascadable FIFO 64 x 9 Cascadable FIFO Features - 64 x 8 and 64 x 9 first-in first-out (FIFO) buffer memory - 35-MHz shift in and shift out rates - Almost Full/Almost Empty and Half Full flags - Dual-port RAM architecture - Fast (50-ns) bubble-through - Independent asynchronous inputs and outputs - Output enable (CY7C408A) - Expandable in word width and FIFO depth - 5V ± 10% supply - TTL plete - Capable of withstanding greater than 2001V electro- static discharge voltage - 300-mil, 28-pin DIP Functional Description The CY7C408A and CY7C409A are 64-word deep by 8- or 9-bit wide first-in first-out (FIFO) buffer memories. In addition to the industry-standard handshaking signals, almost full/almost empty (AFE) and half-full (HF) flags are provided. AFE is HIGH when the FIFO is almost full or almost empty, otherwise AFE is LOW. HF is HIGH when the FIFO is half full, otherwise HF is LOW. The CY7C408A has an output enable...