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参数资料
| 型号： | SN74S139NP3 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | S SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16 |
| 文件页数： | 7/8页 |
| 文件大小： | 300K |
| 代理商： | SN74S139NP3 |
Product Folder: SN74LS139A, Dual 2-line to 4-line decoders / demultiplexers
PRODUCT SUPPORT: TRAINING
SN74LS139A, Dual 2-line to 4-line decoders / demultiplexers
DEVICE STATUS: ACTIVE
PARAMETER NAME SN54LS139A SN74LS139A
Voltage Nodes (V) 5
5
Vcc range (V)
4.5 to 5.5
4.75 to 5.25
Input Level
TTL
Output Level
TTL
Output Drive (mA)
-0.4/8
Output
2S
From
2
To
4
FEATURES
q
Designed Specifically for High-Speed:
Memory Decoders
Data Transmission Systems
q
Two Fully Independent 2- to 4-Line Decoders/Demultiplexers
q
Schottky Clamped for High Performance
DESCRIPTION
These Schottky-clamped TTL MSI circuits are designed to be used in high-performance memory-decoding or data-routing
applications requiring very short propagation delay times. In high-performance memory systems, these decoders can be
used to minimize the effects of system decoding. When employed with high speed memories utilizing a fast-enable circuit,
the delay times of these decoders and the enable time of the memory are usually less than the typical access time of the
memory. This means that the effective system delay introduced by the Schottky-clamped system decoder is negligible.
The circuit comprises two individual two-line to four-line decoders in a single package. The active-low enable input can be
used as a data line in demultiplexing applications.
All of these decoders/demultiplexers feature fully buffered inputs, each of which represents only one normalized load to its
driving circuit. All inputs are clamped with high-performance Schottky diodes to suppress line-ringing and to simplify system
design. The SN54LS139A and SN54S139 are characterized for operation range of -55°C to 125°C. The SN74LS139A and
SN74S139A are characterized for operation from 0°C to 70°C.
TECHNICAL DOCUMENTS
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DATASHEET
file:///G|/imaging/BITTING/mail_pdf/cpl_rework/cpl_images/sn74ls139a.html (1 of 2) [13-Mar-2002 11:38:50 AM]
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| SN74S15DR | S SERIES, TRIPLE 3-INPUT AND GATE, PDSO14 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74S140 | 制造商:Panasonic Industrial Company 功能描述:IC |
| SN74S140D | 功能描述:逻辑门 Dual 4-inp pos-NAND 50-Ohm Line Driver RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
| SN74S140DE4 | 功能描述:逻辑门 Dual 4-inp pos-NAND 50-Ohm Line Driver RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
| SN74S140DG4 | 功能描述:逻辑门 Dual 4input pos NAND 50Ohm line Driver RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
| SN74S140DR | 功能描述:逻辑门 Dual 4-inp pos-NAND 50-Ohm Line Driver RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
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