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SN74ACT2235-20PMR PDF预览

SN74ACT2235-20PMR

更新时间： 2024-10-29 13:13:47
品牌 Logo 应用领域
德州仪器 - TI 存储
页数 文件大小 规格书
18页 276K
描述
1KX9 BI-DIRECTIONAL FIFO, 25ns, PQFP64, PLASTIC, LQFP-64

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中文翻译

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SN74ACT2235-20PMR 技术参数

生命周期：Obsolete零件包装代码：QFP
包装说明：PLASTIC, LQFP-64针数：64
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.32.00.71风险等级：5.75
Is Samacsys：N最长访问时间：25 ns
其他特性：BYPASS-XCVR周期时间：20 ns
JESD-30 代码：S-PQFP-G64长度：10 mm
内存密度：9216 bit内存宽度：9
功能数量：1端子数量：64
字数：1024 words字数代码：1000
工作模式：ASYNCHRONOUS最高工作温度：70 °C
最低工作温度：组织：1KX9
输出特性：3-STATE可输出：YES
封装主体材料：PLASTIC/EPOXY封装代码：LFQFP
封装形状：SQUARE封装形式：FLATPACK, LOW PROFILE, FINE PITCH
并行/串行：PARALLEL认证状态：Not Qualified
座面最大高度：1.6 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端子形式：GULL WING
端子节距：0.5 mm端子位置：QUAD
宽度：10 mmBase Number Matches：1

SN74ACT2235-20PMR 数据手册

 浏览型号SN74ACT2235-20PMR的Datasheet PDF文件第2页浏览型号SN74ACT2235-20PMR的Datasheet PDF文件第3页浏览型号SN74ACT2235-20PMR的Datasheet PDF文件第4页浏览型号SN74ACT2235-20PMR的Datasheet PDF文件第5页浏览型号SN74ACT2235-20PMR的Datasheet PDF文件第6页浏览型号SN74ACT2235-20PMR的Datasheet PDF文件第7页 
SN74ACT2235  
1024 × 9 × 2  
ASYNCHRONOUS BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY  
SCAS148F – DECEMBER 1990 – REVISED JUNE 2003  
Independent Asynchronous Inputs and  
Outputs  
Access Times of 25 ns With a 50-pF Load  
Data Rates up to 50 MHz  
Low-Power Advanced CMOS Technology  
Bidirectional  
Fall-Through Times of 22 ns Maximum  
High Output Drive for Direct Bus Interface  
Dual 1024 by 9 Bits  
Package Options Include 44-Pin Plastic  
Leaded Chip Carriers (FN) and 64-Pin Thin  
Quad Flat (PAG, PM) Packages  
Programmable Almost-Full/Almost-Empty  
Flag  
Empty, Full, and Half-Full Flags  
description  
A FIFO memory is a storage device that allows data to be written into and read from its array at independent  
data rates. The SN74ACT2235 is arranged as two 1024 × 9-bit FIFOs for high speed and fast access times.  
It processes data at rates up to 50 MHz, with access times of 25 ns in a bit-parallel format.  
The SN74ACT2235 consists of bus-transceiver circuits, two 1024 × 9-bit FIFOs, and control circuitry arranged  
for multiplexed transmission of data directly from the data bus or from the internal FIFO memories. Enable (GAB  
and GBA) inputs are provided to control the transceiver functions. The select-control (SAB and SBA) inputs are  
provided to select whether real-time or stored data is transferred. The circuitry used for select control eliminates  
the typical decoding glitch that occurs in a multiplexer during the transition between stored and real-time data.  
Figure 2 shows the eight fundamental bus-management functions that can be performed with the  
SN74ACT2235.  
For more information on this device family, see the application report, 1K × 9 × 2 Asynchronous FIFO  
SN74ACT2235, literature number SCAA010.  
The SN74ACT2235 is characterized for operation from 0°C to 70°C.  
FN PACKAGE  
(TOP VIEW)  
6 5  
4
3
2
1 44 43 42 41 40  
39  
B2  
B3  
B4  
V
B5  
B6  
B7  
B8  
GND  
AF/AEB  
HFB  
A3  
A4  
7
8
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
9
V
CC  
A5  
10  
11  
12  
13  
14  
15  
16  
17  
CC  
A6  
A7  
A8  
GND  
AF/AEA  
HFA  
LDCKA  
18 19 20 21 22 23 24 25 26 27 28  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 2003, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...18

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SN74ACT2235-30FN TI

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SN74ACT2235-30FNR TI

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SN74ACT2235-30PAG TI

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SN74ACT2235-30PAGR TI

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 		1KX9 BI-DIRECTIONAL FIFO, 25ns, PQFP64, GREEN, PLASTIC, TQFP-64
SN74ACT2235-30PM TI

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 		1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST
SN74ACT2235-30PMR TI

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 		1KX9 BI-DIRECTIONAL FIFO, 25ns, PQFP64, PLASTIC, LQFP-64
SN74ACT2235-40FN TI

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 		1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST
SN74ACT2235-40FNR TI

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 		1KX9 BI-DIRECTIONAL FIFO, 35ns, PQCC44, PLASTIC, LCC-44
SN74ACT2235-40PAG TI

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 		1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST
SN74ACT2235-40PAGR TI

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 		1KX9 BI-DIRECTIONAL FIFO, 35ns, PQFP64, GREEN, PLASTIC, TQFP-64

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