DESCRIPTION:
IDT72021/031/041s are high-speed, low-power, dual-port memory devices commonly known as FIFOs (First-In/First Out). Data can be written into and read from the memory at independent rates. The order of information stored and extracted does not change, but the rate of data entering the FIFO might be different than the rate leaving the FIFO.

FEATURES:
• First-In/First-Out Dual-Port memory
• Bit organization
   – IDT72021—1K x 9
   – IDT72031—2K x 9
   – IDT72041—4K x 9
• Ultra high speed
   – IDT72021—25ns access time
   – IDT72031—35ns access time
   – IDT72041—35ns access time
• Easily expandable in word depth and/or width
• Asynchronous and simultaneous read and write
• Functionally equivalent to IDT7202/03/04 with Output