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Product Overview
The SN74LS139AD is a dual 2-to-4 line decoder/demultiplexer from Texas Instruments, designed for high-performance memory decoding and data routing applications. Housed in a compact 16-SOIC package, this device features two independent decoders with active-low outputs, enabling efficient address decoding in digital systems. It operates from a standard 5V supply and is compatible with TTL logic levels, making it ideal for interfacing with legacy and modern digital circuits.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.75V to 5.25V |
| Input High Voltage (VIH) |
2V min |
| Input Low Voltage (VIL) |
0.8V max |
| Propagation Delay (tpd) |
18 ns typical |
| Output Current (IOL) |
8 mA |
| Operating Temperature |
0°C to 70°C |
| Package |
16-SOIC |
Key Features
- Dual 2-to-4 line decoder/demultiplexer with active-low outputs
- Schottky-clamped TTL for high speed
- Low power consumption: 35 mW typical
- Fully compatible with TTL and LSTTL logic
- Input clamp diodes for line termination
- Standard 16-SOIC package for space-constrained designs
Target Applications
- Memory address decoding in 5G base station control boards
- Data routing in automotive dashboard display systems
- Demultiplexing in industrial PLC I/O modules
- Code conversion in telecommunications equipment
- Function selection in test and measurement instruments
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74LS139AD. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
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In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
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HK-SZ Synergy, Flexible Settlement: Direct global shipping from
Shenzhen with support for HK bank transfers and multi-currency.
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Escrow Secured Transactions: We support Escrow.com for secure
transactions, ensuring peace of mind for batch orders.
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BOM Kitting & Sampling Services: Specialized sourcing for
testing samples and urgent shortage components.
Quality Assurance & Compliance
Jasin Chip guarantees that all delivered products are 100% original factory stock
with full quality assurance and traceability.
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100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
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RoHS Compliant: All electronic components comply with international
environmental and safety standards.
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
SN74LS139AD 是德州儀器推出的雙路2線至4線解碼器/多路分配器,專為高性能存儲解碼和數據路由應用而設計。該器件採用緊湊的16-SOIC封裝,具有兩個獨立的解碼器,輸出為低電平有效,可實現數字系統中的高效地址解碼。它工作在標準5V電源下,兼容TTL邏輯電平,非常適合與傳統及現代數字電路接口。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.75V 至 5.25V |
| 輸入高電平 (VIH) |
最小值 2V |
| 輸入低電平 (VIL) |
最大值 0.8V |
| 傳播延遲 (tpd) |
典型值 18 ns |
| 輸出電流 (IOL) |
8 mA |
| 工作溫度 |
0°C 至 70°C |
| 封裝 |
16-SOIC |
核心特性
- 雙路2線至4線解碼器/多路分配器,低電平有效輸出
- 肖特基鉗位TTL,實現高速操作
- 低功耗:典型值 35 mW
- 完全兼容TTL和LSTTL邏輯
- 輸入鉗位二極管用於線路終端
- 標準16-SOIC封裝,適用於空間受限的設計
典型應用場景
- 5G基站控制板中的存儲地址解碼
- 汽車儀表盤顯示系統中的數據路由
- 工業PLC I/O模塊中的多路分配
- 電信設備中的代碼轉換
- 測試與測量儀器中的功能選擇
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN74LS139AD 提供全面的供應鏈與批發解決方案。
我們的核心優勢包括:
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全天候環球客戶支援:專業團隊為您提供即時報價及技術支援,無需漫長等待。
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現貨庫存,即日發貨:確保現貨充足。下午 4 點前確認訂單,即可安排當天寄出。
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深港聯動,結算靈活:深圳直發全球,物流高效可靠;支援香港銀行戶口轉賬及多幣種結算。
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Escrow 擔保交易:支援 Escrow.com 平台交易,保障買賣雙方權益,小批量訂單亦可安心在線下單。
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BOM 配單與樣板服務:提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。
品質保證與合規
Jasin Chip 承諾所有出貨產品均為原廠正貨,具備完善的品質保證及產品可追溯性。
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100% 原廠正貨:承諾所有供應零件均為原裝現貨,品質嚴格把關,來源清晰可追溯。
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符合 RoHS 認證:所有電子元器件均符合國際環保標準及相關安全認證。
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原廠封裝保護:嚴格保留原廠原始包裝及封條,確保物流過程中的靜電防護 (ESD) 與物理安全。
以上產品均為原廠正貨,提供 BOM 配單及現貨庫存支援,歡迎查詢。
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