DESCRIPTION:
The IDT72805LB/72815LB/72825LB are dual 18-bit-wide synchronous (clocked) first-in, first-out (FIFO) memories

FEATURES:
• The 72805 is equivalent to two 72205LB 256 x 18 FIFOs
• The 72815 is equivalent to two 72215LB 512 x 18 FIFOs
• The 72825 is equivalent to two 72225LB 1024 x 18 FIFOs
• Offers optimal combination of large capacity (2K), high speed, design flexibility, and small footprint
• Ideal for the following applications:
   - Network switching
   - Two level prioritization of parallel data
   - Bidirectional data transfer
   - Busmatching between 18-bit and 36-bit data paths
   - Width expansion to 36-bit per package
   - Depth expansion to 2048 words per package
• 20ns read/write cycle time, 12ns access time
• Read and write clocks can be asynchronous or coincident (permits simultaneous reading and writing of data on a single clock edge)
• Programmable almost-empty and almost-full flags
• Empty and Full flags signal FIFO status
• Half-Full flag capability in single device configuration
• Enable puts output data bus in high impedance state
• High-performance submicron CMOS technology
• Available in a 121-lead, 16 x 16 mm plastic Ball Grid Array (BGA)
• Industrial temperature range (-40°C to +85°C) is available, tested to military electrical specifications