DESCRIPTION:
The IDT72V3640/72V3650/72V3660/72V3670/72V3680/72V3690 are exceptionally deep, high speed, CMOS First-In-First-Out (FIFO) memories with clocked read and write controls and a flexible Bus-Matching x36/x18/x9 data flow. These FIFOs offer several key user benefits:
• Flexible x36/x18/x9 Bus-Matching on both read and write ports
• The period required by the retransmit operation is fixed and short.
• The first word data latency period, from the time the first word is
   written to an empty FIFO to the time it can be read, is fixed and short.
• Asynchronous/Synchronous translation on the read or write ports
• High density offerings up to 1 Mbit

FEATURES:
• Choose among the following memory organizations:Commercial
   IDT72V3640 - 1,024 x 36
   IDT72V3650 - 2,048 x 36
   IDT72V3660 - 4,096 x 36
   IDT72V3670 - 8,192 x 36
   IDT72V3680 - 16,384 x 36
   IDT72V3690 - 32,768 x 36
• Up to 166 MHz Operation of the Clocks
• User selectable Asynchronous read and/or write ports (PBGA Only)
• User selectable input and output port bus-sizing
   - x36 in to x36 out
   - x36 in to x18 out
   - x36 in to x9 out
   - x18 in to x36 out
   - x9 in to x36 out
• Pin to Pin compatible to the higher density of IDT72V36100 and
   IDT72V36110
• Big-Endian/Little-Endian user selectable byte representation
• 5V input tolerant
• Fixed, low first word latency
• Zero latency retransmit
• Auto power down minimizes standby power consumption
• Master Reset clears entire FIFO
• Partial Reset clears data, but retains programmable settings
• Empty, Full and Half-Full flags signal FIFO status
• Programmable Almost-Empty and Almost-Full flags, each flag can
   default to one of eight preselected offsets
• Selectable synchronous/asynchronous timing modes for Almost
   Empty and Almost-Full flags
• Program programmable flags by either serial or parallel means
• Select IDT Standard timing (using EF and FF flags) or First Word
   Fall Through timing (using OR and IR flags)
• Output enable puts data outputs into high impedance state
• Easily expandable in depth and width
• JTAG port, provided for Boundary Scan function (PBGA Only)
• Independent Read and Write Clocks (permit reading and writing
   simultaneously)
• Available in a 128-pin Thin Quad Flat Pack (TQFP) or a 144-pin Plastic
   Ball Grid Array (PBGA) (with additional features)
• High-performance submicron CMOS technology
• Industrial temperature range (–40°C to +85°C) is available