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Product Overview
The SN74AHCT139DR is a dual 2-to-4 line decoder/demultiplexer from Texas Instruments, designed for high-speed CMOS logic applications. It operates with a supply voltage range of 4.5V to 5.5V, making it ideal for 5V systems. The device features two independent decoders, each with active-low enables and outputs. Housed in a 16-pin SOIC package, it offers a compact solution for address decoding, data routing, and memory selection in digital systems.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.5V to 5.5V |
| Input Voltage (VI) |
0V to 5.5V |
| Output Voltage (VO) |
0V to VCC |
| High-Level Input Voltage (VIH) |
2V (min) |
| Low-Level Input Voltage (VIL) |
0.8V (max) |
| High-Level Output Current (IOH) |
-8 mA |
| Low-Level Output Current (IOL) |
8 mA |
| Propagation Delay (tpd) |
7.5 ns (typ) at 5V, 50pF |
| Operating Temperature |
-40°C to 125°C |
| Package |
16-SOIC |
Key Features
- Dual 2-to-4 line decoder/demultiplexer
- Separate active-low enables for each decoder
- Inputs are TTL-voltage compatible
- Low power consumption: 20 µA (max) ICC
- High noise immunity: 0.45 VCC (min) at VCC = 5V
- ESD protection exceeds 2000V per MIL-STD-883, Method 3015
- Available in 16-SOIC package for space-saving designs
Target Applications
- Address decoding in 5G base station control boards
- Memory selection in automotive dashboard infotainment systems
- Data routing in industrial PLCs
- Demultiplexing in test equipment like oscilloscopes
- Glue logic in FPGA-based designs for signal distribution
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74AHCT139DR. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
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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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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
SN74AHCT139DR 是德州儀器推出的雙路 2 線轉 4 線解碼器/多路分配器,專為高速 CMOS 邏輯應用設計。工作電壓範圍為 4.5V 至 5.5V,非常適合 5V 系統。該器件包含兩個獨立的解碼器,每個都具有低電平有效的使能端和輸出端。採用 16 引腳 SOIC 封裝,為數字系統中的地址解碼、數據路由和存儲器選擇提供了緊湊的解決方案。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.5V 至 5.5V |
| 輸入電壓 (VI) |
0V 至 5.5V |
| 輸出電壓 (VO) |
0V 至 VCC |
| 高電平輸入電壓 (VIH) |
2V (最小值) |
| 低電平輸入電壓 (VIL) |
0.8V (最大值) |
| 高電平輸出電流 (IOH) |
-8 mA |
| 低電平輸出電流 (IOL) |
8 mA |
| 傳播延遲 (tpd) |
7.5 ns (典型值) 在 5V, 50pF |
| 工作溫度 |
-40°C 至 125°C |
| 封裝 |
16-SOIC |
核心特性
- 雙路 2 線轉 4 線解碼器/多路分配器
- 每個解碼器具有獨立的低電平有效使能端
- 輸入與 TTL 電壓兼容
- 低功耗:ICC 最大值 20 µA
- 高抗噪能力:VCC = 5V 時最小值 0.45 VCC
- ESD 保護超過 2000V,符合 MIL-STD-883 方法 3015
- 採用 16-SOIC 封裝,節省空間
典型應用場景
- 5G 基站控制板中的地址解碼
- 汽車儀表盤信息娛樂系統中的存儲器選擇
- 工業 PLC 中的數據路由
- 示波器等測試設備中的多路分配
- FPGA 設計中的粘合邏輯,用於信號分配
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