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参数资料
| 型号： | SN74HC251DB |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | HC/UH SERIES, 8 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, PDSO16 |
| 封装： | PLASTIC, SSOP-16 |
| 文件页数： | 11/11页 |
| 文件大小： | 205K |
| 代理商： | SN74HC251DB |
Product Folder: SN74HC251, Data Selectors/Multiplexers With 3-State Outputs
PRODUCT FOLDER | PRODUCT INFO: FEATURES | DESCRIPTION | DATASHEETS | PRICING/AVAILABILITY/PKG | SAMPLES
PRODUCT SUPPORT: TRAINING
SN74HC251, Data Selectors/Multiplexers With 3-State Outputs
DEVICE STATUS: ACTIVE
PARAMETER NAME SN54HC251 SN74HC251
Voltage Nodes (V) 6, 5, 2
6, 5, 2
Vcc range (V)
2.0 to 6.0
Input Level
CMOS
Output Level
CMOS
Output Drive (mA)
-6/6
Output
3S
From
8
To
1
FEATURES
q
3-State Version of 'HC151
q
High-Current 3-State Outputs Interface Directly With System Bus or Can Drive up to 15 LSTTL Loads
q
Perform Parallel-to-Serial Conversion
q
Complementary Outputs Provide True and Inverted Data
q
Package Options Include Plastic Small-Outline (D), Shrink Small-Outline (DB), and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) DIPs
DESCRIPTION
These data selectors/multiplexers contain full binary decoding to select 1-of-8 data sources and feature strobe-controlled complementary 3-state outputs.
The 3-state outputs can interface with and drive data lines of bus-organized systems. With all but one of the common outputs disabled (in the high-impedance state), the low impedance of the
single enabled output drives the bus line to a high or low logic level. Both outputs are controlled by the output-enable (OE\) input. The outputs are disabled when OE\ is high.
The SN54HC251 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74HC251 is characterized for operation from -40°C to 85 °C.
D0, D1...D7 = the level of the respective D input
TECHNICAL DOCUMENTS
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DATASHEET
APPLICATION NOTES
View Application Notes for Digital Logic
file:///H|/imaging/BITTING/cpl/20020930_1/09272002_10/TXII/09272002_HTML/sn74hc251.html (1 of 3) [Oct-04-2002 4:11:31 PM]
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74HC251DBR | 功能描述:编码器、解码器、复用器和解复用器 Tri-State Data RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SN74HC251DBRE4 | 功能描述:编码器、解码器、复用器和解复用器 Data w/3-State Out Selector/Multiplexer RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SN74HC251DBRG4 | 功能描述:编码器、解码器、复用器和解复用器 Data Selectors Multiplexers RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SN74HC251DE4 | 功能描述:编码器、解码器、复用器和解复用器 Data w/3-State Out Selector/Multiplexer RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SN74HC251DG4 | 功能描述:编码器、解码器、复用器和解复用器 Data Selectors Multiplexers RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
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