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SN54ALS257AFK PDF预览

SN54ALS257AFK

更新时间: 2024-11-25 23:06:11
品牌 Logo 应用领域
德州仪器 - TI 复用器输出元件
页数 文件大小 规格书
9页 141K
描述
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

SN54ALS257AFK 技术参数

生命周期:Obsolete零件包装代码:QLCC
包装说明:QCCN,针数:20
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.22系列:ALS
JESD-30 代码:S-CQCC-N20长度:8.89 mm
逻辑集成电路类型:MULTIPLEXER功能数量:4
输入次数:2输出次数:1
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, METAL-SEALED COFIRED
封装代码:QCCN封装形状:SQUARE
封装形式:CHIP CARRIER传播延迟(tpd):14 ns
认证状态:Not Qualified座面最大高度:2.03 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:TTL温度等级:MILITARY
端子形式:NO LEAD端子节距:1.27 mm
端子位置:QUAD宽度:8.89 mm
Base Number Matches:1

SN54ALS257AFK 数据手册

 浏览型号SN54ALS257AFK的Datasheet PDF文件第2页浏览型号SN54ALS257AFK的Datasheet PDF文件第3页浏览型号SN54ALS257AFK的Datasheet PDF文件第4页浏览型号SN54ALS257AFK的Datasheet PDF文件第5页浏览型号SN54ALS257AFK的Datasheet PDF文件第6页浏览型号SN54ALS257AFK的Datasheet PDF文件第7页 
SN54ALS257A, SN54ALS258A, SN74ALS257A, SN74ALS258A, SN74AS257, SN74AS258  
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS  
WITH 3-STATE OUTPUTS  
SDAS124C – APRIL 1982 – REVISED AUGUST 1996  
SN54ALS257A, SN54ALS258A . . . J PACKAGE  
SN74ALS257A, SN74ALS258A, SN74AS257,  
3-State Outputs Interface Directly With  
System Bus  
SN74AS258 . . . D OR N PACKAGE  
Provide Bus Interface From Multiple  
Sources in High-Performance Systems  
(TOP VIEW)  
A/B  
1A  
1B  
1Y  
2A  
2B  
2Y  
GND  
V
CC  
15 OE  
1
2
3
4
5
6
7
8
16  
Package Options Include Plastic  
Small-Outline (D) Packages, Ceramic Chip  
Carriers (FK), and Standard Plastic (N) and  
Ceramic (J) 300-mil DIPs  
4A  
4B  
14  
13  
12 4Y  
3A  
10 3B  
3Y  
description  
11  
These data selectors/multiplexers are designed  
to multiplex signals from 4-bit data sources to  
4-outputdatalinesinbus-organizedsystems. The  
3-state outputs do not load the data lines when the  
output-enable (OE) input is at a high logic level.  
9
SN54ALS257A, SN54ALS258A . . . FK PACKAGE  
(TOP VIEW)  
The SN54ALS257A and SN54ALS258A are  
characterized for operation over the full military  
temperature range of –55°C to 125°C. The  
SN74ALS257A, SN74ALS258A, SN74AS257,  
and SN74AS258 are characterized for operation  
from 0°C to 70°C.  
3
2
1 20 19  
18  
4A  
4B  
NC  
4Y  
3A  
1B  
1Y  
NC  
2A  
2B  
4
5
6
7
8
17  
16  
15  
14  
9 10 11 12 13  
NC – No internal connection  
FUNCTION TABLE  
OUTPUT Y  
SN54ALS257A SN54ALS258A  
INPUTS  
DATA  
SN74ALS257A  
SN74AS257  
SN74ALS258A  
SN74AS258  
OE A/B  
A
B
H
L
L
L
L
X
L
X
L
X
X
X
L
Z
L
Z
H
L
L
H
X
X
H
L
H
H
H
L
H
H
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 1996, 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  

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