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