DESCRIPTION:
The IDT723622/723632/723642 is a monolithic, high-speed, low-power, CMOS Bidirectional SyncFIFO (clocked) memory which supports clock frequencies up to 67MHz and have read access times as fast as 11ns. Two independent 256/512/1024x36 dual-port SRAM FIFOs on board each chip buffer data in opposite directions.
   
FEATURES:
• Free-running CLKA and CLKB may be asynchronous or
    coincident (simultaneous reading and writing of data on a
    single clock edge is permitted)
• Two independent clocked FIFOs buffering data
    in opposite directions
• Memory storage capacity:
                           IDT723622–256 x 36 x 2
                           IDT723632–512 x 36 x 2
                           IDT723642–1024 x 36 x 2
• Mailbox bypass register for each FIFO
• Programmable Almost-Full and Almost-Empty flags
• Microprocessor Interface Control Logic
• IRA, ORA, AEA, and AFA flags synchronized by CLKA
• IRB, ORB, AEB, and AFB flags synchronized by CLKB
• Supports clock frequencies up to 67MHz   
• Fast access times of 11ns
• Available in 132-pin Plastic Quad Flatpack (PQF) or
    space-saving 120-pin Thin Quad Flatpack (PF)
• Low-power 0.8-Micron Advanced CMOS technology
• Industrial temperature range (-40oC to +85oC) is
    available, tested to military electrical specifications