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Functional Description

The CY7C401 and CY7C403 are asynchronous first-in first-out (FIFOs) organized as 64 four-bit words. The CY7C402 and CY7C404 are similar FIFOs organized as 64 five-bit words. Both the CY7C403 and CY7C404 have an output enable (OE) function.

Features

? 64 x 4 (CY7C401 and CY7C403) 64 x 5 (CY7C402 and CY7C404) High-speed first-in first-out memory (FIFO)

? Processed with high-speed CMOS for optimum speed/power

? 25-MHz data rates

? 50-ns bubble-through time—25 MHz

? Expandable in word width and/or length

? 5-volt power supply ± 10 tolerance, both commercial and military

? Independent asynchronous inputs and outputs

? TTL-compatible interface

? Output enable function available on CY7C403 and CY7C404

? Capable of withstanding greater than 2001V electrostatic discharge

? Pin compatible with MMI 67401A/67402A