FIFO Mem Sync Dual Depth/Width Uni-Dir 1K x 18 68-Pin PLCC Tube

A FIFO memory is a storage device that allows data to be written into and read from its array at independent data rates. The SN74ACT7881 is organized as 1024 × 18 bits. The SN74ACT7881 processes data at rates up to 67 MHz and access times of 11 ns in a bit-parallel format. Data outputs are noninverting with respect to the data inputs. Expansion is accomplished easily in both word width and word depth. The SN74ACT7881 has normal input-bus to output-bus asynchronous operation. The special enable circuitry adds the ability to synchronize independent reads and writes to their respective system clocks. The SN74ACT7881 is characterized for operation from 0°C to 70°C.

Member of the Texas Instruments Widebus^TM Family

Independent Asynchronous Inputs and Outputs

Read and Write Operations Can Be Synchronized to Independent System Clocks

Programmable Almost-Full/Almost-Empty Flag

Pin-to-Pin Compatible With SN74ACT7882, SN74ACT7884, and SN74ACT7811

Input-Ready, Output-Ready, and Half-Full Flags

Expandable in Word Width and/or Word Depth

Fast Access Times of 11ns With a 50-pF Load

High Output Drive for Direct Bus Interface

Package Options Include 68-Pin Plastic Leaded Chip Carrrier (FN) or 80-Pin Shrink Quad Flat (PN) Package