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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.

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 complete

? Capable of withstanding greater than 2001V electrostatic

discharge voltage

? 300-mil, 28-pin DIP