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SN74HCT257DR PDF预览

SN74HCT257DR

更新时间: 2024-10-31 23:03:15
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
8页 267K
描述
QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/ MULTIPLEXERS WITH 3 STATE OUTPUTS

SN74HCT257DR 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:SOIC
包装说明:SOP, SOP16,.25针数:16
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:1 week
风险等级:0.71系列:HCT
JESD-30 代码:R-PDSO-G16JESD-609代码:e4
长度:9.9 mm负载电容(CL):50 pF
逻辑集成电路类型:MULTIPLEXER最大I(ol):0.006 A
湿度敏感等级:1位数:2
功能数量:4输入次数:2
输出次数:1端子数量:16
最高工作温度:85 °C最低工作温度:-40 °C
输出特性:3-STATE输出极性:TRUE
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP16,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE包装方法:TR
峰值回流温度(摄氏度):260电源:5 V
最大电源电流(ICC):0.08 mAProp。Delay @ Nom-Sup:38 ns
传播延迟(tpd):48 ns认证状态:Not Qualified
座面最大高度:1.75 mm子类别:Multiplexer/Demultiplexer
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:INDUSTRIAL
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3.91 mm
Base Number Matches:1

SN74HCT257DR 数据手册

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SCLS072D − NOVEMBER 1988 − REVISED SEPTEMBER 2003  
D
D
D
D
D
Operating Voltage Range of 4.5 V to 5.5 V  
D
D
D
D
Low Input Current of 1 µA Max  
Inputs Are TTL-Voltage Compatible  
High-Current 3-State Outputs Interface  
Directly With System Bus  
Provide Bus Interface From Multiple  
Sources in High-Performance Systems  
Typical t = 17 ns  
pd  
Low Power Consumption, 80-µA Max I  
Buffered Inputs and Outputs  
CC  
6-mA Output Drive at 5 V  
SN54HCT257 . . . FK PACKAGE  
(TOP VIEW)  
SN54HCT257 . . . J PACKAGE  
SN74HCT257 . . . D OR N PACKAGE  
(TOP VIEW)  
A/B  
1A  
V
CC  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
3
2
1
20 19  
18  
OE  
4A  
4B  
4A  
4B  
NC  
1B  
1Y  
NC  
2A  
2B  
4
5
6
7
8
1B  
17  
16  
1Y  
2A  
12 4Y  
15 4Y  
14  
9 10 11 12 13  
11  
10  
9
2B  
3A  
3B  
3Y  
3A  
2Y  
GND  
NC − No internal connection  
description/ordering information  
The ’HCT257 devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in  
bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (OE) input is at  
the high logic level.  
To ensure the high-impedance state during power up or power down, OE should be tied to V  
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.  
through a pullup  
CC  
ORDERING INFORMATION  
ORDERABLE  
PART NUMBER  
TOP-SIDE  
MARKING  
PACKAGE  
T
A
PDIP − N  
SOIC − D  
Tube of 25  
Tube of 40  
Reel of 2500  
Reel of 250  
Tube of 25  
Tube of 55  
SN74HCT257N  
SN74HCT257D  
SN74HCT257DR  
SN74HCT257DT  
SNJ54HCT257J  
SNJ54HCT257FK  
SN74HCT257N  
−40°C to 85°C  
HCT257  
CDIP − J  
SNJ54HCT257J  
−55°C to 125°C  
LCCC − FK  
SNJ54HCT257FK  
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are  
available at www.ti.com/sc/package.  
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  
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ꢩꢦ ꢨ ꢦ ꢣ ꢤ ꢛ ꢤ ꢨ ꢞ ꢬ  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

SN74HCT257DR 替代型号

型号 品牌 替代类型 描述 数据表
SN74HCT257DG4 TI

完全替代

QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SN74HCT257DRE4 TI

完全替代

QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SN74HCT257D TI

完全替代

QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/ MULTIPLEXERS WITH 3 STATE OUTPUTS

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SN74HCT257N TI

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QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SN74HCT257NE4 TI

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QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SN74HCT257NE4 ROCHESTER

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Multiplexer, HCT Series, 4-Func, 2 Line Input, 1 Line Output, True Output, CMOS, PDIP16, R