DESCRIPTION:
The IDT72605 and IDT72615 are very high-speed, low power bidirectional First-In, First-Out (FIFO) memories, with
synchronous interface for fast read and write cycle times. The
SyncBiFIFO is a data buffer that can store or retrieve
information from two sources simultaneously. Two Dual-Port
FIFO memory arrays are contained in the SyncBiFIFO; one
data buffer for each direction.
   
FEATURES:
• Two independent FIFO memories for fully bidirectional
    data transfers
• 256 x 18 x 2 organization (IDT 72605)
• 512 x 18 x 2 organization (IDT 72615)
• Synchronous interface for fast (20ns) read and write
    cycle times
• Each data port has an independent clock and read/write
    control
• Output enable is provided on each port as a three-state
    control of the data bus
• Built-in bypass path for direct data transfer between two
    ports
• Two fixed flags, Empty and Full, for both the A-to-B and
    the B-to-A FIFO
• Programmable flag offset can be set to any depth in the
    FIFO
• The synchronous BiFIFO is packaged in a 64-pin TQFP
    (Thin Quad Flatpack), 68-pin PGA and 68-pin PLCC
• Industrial temperature range (-40oC to +85oC) is
    available, tested to military electrical specifications