DESCRIPTION:
The IDT72421/72201/72211/72221/72231/72241/72251 SyncFIFO™ are very high-speed, low-power First-In, First-Out (FIFO) memories with clocked read and write controls.
   
FEATURES:
• 64 x 9-bit organization (IDT72421)
• 256 x 9-bit organization (IDT72201)
• 512 x 9-bit organization (IDT72211)
• 1,024 x 9-bit organization (IDT72221)
• 2,048 x 9-bit organization (IDT72231)
• 4,096 x 9-bit organization (IDT72241)
• 8,192 x 9-bit organization (IDT72251)
• 10 ns read/write cycle time (excluding the IDT72251)
• Read and Write Clocks can be independent
• Dual-Ported zero fall-through time architecture
• Empty and Full Flags signal FIFO status
• Programmable Almost-Empty and Almost-Full flags can
    be set to any depth
• Programmable Almost-Empty and Almost-Full flags
    default to Empty+7, and Full-7, respectively
• Output enable puts output data bus in high-impedance state
• Advanced submicron CMOS technology
• Available in the 32-pin plastic leaded chip carrier (PLCC)
• All devices, except the 72251, are available in the
    ceramic leadless chip carrier (LCC) and 32-pin Thin
    Quad Flat Pack (TQFP)
• For through-hole product please see the IDT72420/
    72200/72210/72220/72230/72240 data sheet
• Industrial temperature range (–40°C to +85°C) is available
    (plastic packages only)