DESCRIPTION:
The IDT72205LB/72215LB/72225LB/72235LB/72245LB are very high-speed, low-power First-In, First-Out (FIFO) memories with clocked read and write controls.
   
FEATURES:
• 256 x 18-bit organization array (72205LB)
• 512 x 18-bit organization array (72215LB)
• 1024 x 18-bit organization array (72225LB)
• 2048 x 18-bit organization array (72235LB)
• 4096 x 18-bit organization array (72245LB)
• 15 ns read/write cycle time
• Easily expandable in depth and width
• Read and write clocks can be asynchronous or coincident
• Dual-Port zero fall-through time architecture
• Programmable almost-empty and almost-full flags
• Empty and Full flags signal FIFO status
• Half-Full flag capability in a single device configuration
• Output enable puts output data bus in high-impedance
    state
• High-performance submicron CMOS technology
• Available in a 64-lead thin quad flatpack (TQFP/STQFP),
    pin grid array (PGA), and plastic leaded chip carrier
    (PLCC)
• Military product compliant to MIL-STD-883, Class B
• Industrial temperature range (-40OC to +85OC) is available,
    tested to military electrical specifications