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SN54HCT645WR PDF预览

SN54HCT645WR

更新时间： 2024-09-15 20:08:35
品牌 Logo 应用领域
德州仪器 - TI 输出元件逻辑集成电路
页数 文件大小 规格书
9页 193K
描述
HCT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CDFP20, CERAMIC, DFP-20

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SN54HCT645WR 技术参数

生命周期：Obsolete零件包装代码：DFP
包装说明：DFP,针数：20
Reach Compliance Code：unknown风险等级：5.84
其他特性：WITH DIRECTION CONTROL系列：HCT
JESD-30 代码：R-GDFP-F20长度：13.09 mm
负载电容（CL）：150 pF逻辑集成电路类型：BUS TRANSCEIVER
位数：8功能数量：1
端口数量：2端子数量：20
最高工作温度：125 °C最低工作温度：-55 °C
输出特性：3-STATE输出极性：TRUE
封装主体材料：CERAMIC, GLASS-SEALED封装代码：DFP
封装形状：RECTANGULAR封装形式：FLATPACK
传播延迟（tpd）：45 ns认证状态：Not Qualified
座面最大高度：2.54 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：MILITARY端子形式：FLAT
端子节距：1.27 mm端子位置：DUAL
宽度：6.92 mmBase Number Matches：1

SN54HCT645WR 数据手册

 浏览型号SN54HCT645WR的Datasheet PDF文件第2页浏览型号SN54HCT645WR的Datasheet PDF文件第3页浏览型号SN54HCT645WR的Datasheet PDF文件第4页浏览型号SN54HCT645WR的Datasheet PDF文件第5页浏览型号SN54HCT645WR的Datasheet PDF文件第6页浏览型号SN54HCT645WR的Datasheet PDF文件第7页 
SN54HCT645, SN74HCT645  
OCTAL BUS TRANSCEIVERS  
WITH 3-STATE OUTPUTS  
SCLS019B – MARCH 1984 – REVISED MAY 1997  
SN54HCT645 . . . J OR W PACKAGE  
SN74HCT645 . . . DW OR N PACKAGE  
(TOP VIEW)  
Inputs Are TTL-Voltage Compatible  
True Logic  
High-Current 3-State Outputs Can Drive up  
to 15 LSTTL Loads  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
DIR  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
V
CC  
OE  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
B8  
Package Options Include Plastic  
Small-Outline (DW) and Ceramic Flat (W)  
Packages, Ceramic Chip Carriers (FK), and  
Standard Plastic (N) and Ceramic (J)  
300-mil DIPs  
description  
These octal bus transceivers are designed for  
asynchronous two-way communication between  
data buses. These devices transmit data from the  
A bus to the B bus or from the B bus to the A bus,  
depending upon the level at the direction-control  
(DIR) input. The output-enable (OE) input can be  
used to disable the device so the buses are  
effectively isolated.  
GND  
SN54HCT645 . . . FK PACKAGE  
(TOP VIEW)  
3
2
1
20 19  
18  
B1  
B2  
B3  
B4  
B5  
A3  
A4  
A5  
A6  
A7  
4
5
6
7
8
The SN54HCT645 is characterized for operation  
over the full military temperature range of –55°C  
to 125°C. The SN74HCT645 is characterized for  
operation from –40°C to 85°C.  
17  
16  
15  
14  
9 10 11 12 13  
FUNCTION TABLE  
INPUTS  
OPERATION  
OE  
L
DIR  
L
B data to A bus  
A data to B bus  
Isolation  
L
H
H
X
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 1997, Texas Instruments Incorporated  
UNLESS OTHERWISE NOTED this document contains PRODUCTION  
DATA information 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...9

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