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

• 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) 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

• Green parts available, see ordering information

72221L15PFG属于集成电路（IC） > FIFO 存储器。瑞萨科技有限公司制造生产的72221L15PFGFIFO 存储器先入先出 (FIFO) 存储器可用于数字信息的短期存储，其中信息检索顺序和序列与信息存储顺序和序列相同。这类产品又称为队列或缓冲存储器，通常用于在单独的设备之间交换信息，尤其是在数据以不同的速率或在略微不同的时间点生成和使用的情况下。