Datasheet > IDT72235LB25JG8

IDT72235LB25JG8

更新时间： 2024-11-06 17:47:35

品牌	Logo	应用领域
艾迪悌 - IDT		先进先出芯片
页数	文件大小	规格书
16页	181K
描述
FIFO, 2KX18, 15ns, Synchronous, CMOS, PQCC68, PLASTIC, LCC-68

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技术参数
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IDT72235LB25JG8 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	LCC
包装说明：	QCCJ,	针数：	68
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.32.00.71	风险等级：	5.42
最长访问时间：	15 ns	周期时间：	25 ns
JESD-30 代码：	S-PQCC-J68	JESD-609代码：	e3
长度：	24.2062 mm	内存密度：	36864 bit
内存宽度：	18	功能数量：	1
端子数量：	68	字数：	2048 words
字数代码：	2000	工作模式：	SYNCHRONOUS
最高工作温度：	70 °C	最低工作温度：
组织：	2KX18	输出特性：	3-STATE
可输出：	YES	封装主体材料：	PLASTIC/EPOXY
封装代码：	QCCJ	封装形状：	SQUARE
封装形式：	CHIP CARRIER	并行/串行：	PARALLEL
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	4.572 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	4.5 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	COMMERCIAL	端子面层：	MATTE TIN
端子形式：	J BEND	端子节距：	1.27 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	30
宽度：	24.2062 mm	Base Number Matches：	1

IDT72235LB25JG8 数据手册

IDT72205LB/72215LB/72225LB/72235LB/72245LB CMOS SyncFIFO™

256 x 18-BIT, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18

Commercial And Industrial Temperature Ranges

IDT72205LB

IDT72215LB

IDT72225LB

IDT72235LB

IDT72245LB

CMOS SyncFIFO™

256 x 18, 512 x 18, 1,024 x 18,

2,048 x 18 and 4,096 x 18

Integrated Device Technology, Inc.

are applicable for a wide variety of data buffering needs, such

as optical disk controllers, Local Area Networks (LANs), and

interprocessor communication.

FEATURES:

• 256 x 18-bit organization array (IDT72205LB)

• 512 x 18-bit organization array (IDT72215LB)

• 1,024 x 18-bit organization array (IDT72225LB)

• 2,048 x 18-bit organization array (IDT72235LB)

• 4,096 x 18-bit organization array (IDT72245LB)

• 10 ns read/write cycle time

• Empty and Full flags signal FIFO status

• Easily expandable in depth and width

• Asynchronous or coincident read and write clocks

• Programmable Almost-Empty and Almost-Full flags with

default settings

These FIFOs have 18-bit input and output ports. The input

port is controlled by a free-running clock (WCLK), and an input

enable pin (WEN). Data is read into the synchronous FIFO on

everyclockwhenWEN isasserted.Theoutputportiscontrolled

byanotherclockpin(RCLK)andanotherenablepin(REN).The

read clock can be tied to the write clock for single clock

operation or the two clocks can run asynchronous of one

another for dual-clock operation. An Output Enable pin (OE) is

provided on the read port for three-state control of the output.

ThesynchronousFIFOshavetwofixedflags,Empty(EF)and

Full (FF), and two programmable flags, Almost-Empty (PAE)

and Almost-Full (PAF). The offset loading of the programmable

flags is controlled by a simple state machine, and is initiated by

asserting the Load pin (LD). A Half-Full flag (HF) is available

when the FIFO is used in a single device configuration.

These devices are depth expandable using a Daisy-Chain

technique. The XI and XO pins are used to expand the FIFOs.

In depth expansion configuration, FL is grounded on the first

deviceandsettoHIGHforallotherdevicesintheDaisyChain.

TheIDT72205LB/72215LB/72225LB/72235LB/72245LBis

fabricated using IDT’s high-speed submicron CMOS technol-

ogy.

• Half-Full flag capability

• Dual-Port zero fall-through time architecture

• 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)

and plastic leaded chip carrier (PLCC)

• Industrial temperature range (–40^°C to +85^°C) is available

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. These FIFOs

FUNCTIONAL BLOCK DIAGRAM

WCLK

D0-D17

INPUT REGISTER

OFFSET REGISTER

FLAG

WRITE CONTROL

LOGIC

•

LOGIC

RAM ARRAY

256 x 18, 512 x 18

1,024 x 18, 2,048 x 18

4,096 x 18

)

READ POINTER

WRITE POINTER

•

READ CONTROL

LOGIC

EXPANSION LOGIC

(

OUTPUT REGISTER

RESET LOGIC

2766 drw 01

RCLK

Q0-Q17

SyncFIFO is a trademark and the IDT logo is a registered trademark of Integrated Device Technology, Inc

COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES

MAY 2000

DSC-2766/-

For latest information contact IDT's web site at www.idt.com or fax-on-demand at 408-492-8391.

12 3 4 5 6 7...16

中文翻译

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与IDT72235LB25JG8相关器件

型号	品牌	获取价格	描述	数据表
IDT72235LB25JGI	IDT	获取价格	FIFO, 2KX18, 15ns, Synchronous, CMOS, PQCC68, GREEN, PLASTIC, LCC-68
IDT72235LB25JGI8	IDT	获取价格	FIFO, 2KX18, 15ns, Synchronous, CMOS, PQCC68, PLASTIC, LCC-68
IDT72235LB25JI	IDT	获取价格	CMOS SyncFIFOO 256 x 18, 512 x 18, 1024 x 18, 2048 x 18 and 4096 x 18
IDT72235LB25JI8	IDT	获取价格	FIFO, 2KX18, 15ns, Synchronous, CMOS, PQCC68, PLASTIC, LCC-68
IDT72235LB25PF	IDT	获取价格	CMOS SyncFIFOO 256 x 18, 512 x 18, 1024 x 18, 2048 x 18 and 4096 x 18
IDT72235LB25PF8	IDT	获取价格	FIFO, 2KX18, 15ns, Synchronous, CMOS, PQFP64, PLASTIC, TQFP-64
IDT72235LB25PFB	IDT	获取价格	CMOS SyncFIFOO 256 x 18, 512 x 18, 1024 x 18, 2048 x 18 and 4096 x 18
IDT72235LB25PFG8	IDT	获取价格	FIFO, 2KX18, 15ns, Synchronous, CMOS, PQFP64, PLASTIC, TQFP-64
IDT72235LB25PFGI	IDT	获取价格	FIFO, 2KX18, 15ns, Synchronous, CMOS, PQFP64, GREEN, PLASTIC, TQFP-64
IDT72235LB25PFGI8	IDT	获取价格	FIFO, 2KX18, 15ns, Synchronous, CMOS, PQFP64, PLASTIC, TQFP-64

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