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Product Overview
The CD74ACT139E is a high-speed dual 2-to-4 line decoder/demultiplexer from Texas Instruments, fabricated with advanced CMOS technology to achieve low power consumption while maintaining high noise immunity. It is designed for memory decoding, data routing, and general logic applications requiring minimal propagation delay. The device features two independent decoders, each with active-low enables and outputs, making it ideal for demultiplexing applications. Operating from 4.5V to 5.5V, it is compatible with TTL logic levels and offers balanced propagation delays and transition times.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.5V to 5.5V |
| High-Level Input Voltage (VIH) |
2V min |
| Low-Level Input Voltage (VIL) |
0.8V max |
| High-Level Output Voltage (VOH) |
4.5V min (IOH = -24mA) |
| Low-Level Output Voltage (VOL) |
0.5V max (IOL = 24mA) |
| Propagation Delay (tpd) |
8.5ns typ (VCC=5V, CL=50pF) |
| Input Capacitance |
10pF typ |
| Operating Temperature |
-55°C to +125°C |
| Package |
16-PDIP |
Key Features
- Dual 2-to-4 line decoder/demultiplexer
- Active-low enables and outputs for flexible logic
- High speed: typical propagation delay 8.5ns at 5V
- Low power consumption: 80µA max ICC
- Wide operating temperature range: -55°C to +125°C
- TTL-compatible inputs and outputs
- Balanced propagation delays and transition times
- Standard 16-pin PDIP package for easy prototyping
Target Applications
- Memory decoding in 5G base station control boards
- Data routing in automotive dashboard display systems
- Address decoding in industrial PLCs
- Demultiplexing in test and measurement equipment
- Logic expansion in FPGA prototyping boards
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
CD74ACT139E. 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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Shenzhen with support for HK bank transfers and multi-currency.
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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
CD74ACT139E 是德州儀器推出的高速雙路2線至4線解碼器/多路分配器,採用先進的CMOS工藝,在保持高抗噪性的同時實現低功耗。它專為存儲器解碼、數據路由和通用邏輯應用而設計,傳播延遲極小。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,非常適合多路分配應用。工作電壓範圍為4.5V至5.5V,兼容TTL邏輯電平,並提供平衡的傳播延遲和轉換時間。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.5V 至 5.5V |
| 高電平輸入電壓 (VIH) |
最小值 2V |
| 低電平輸入電壓 (VIL) |
最大值 0.8V |
| 高電平輸出電壓 (VOH) |
最小值 4.5V (IOH = -24mA) |
| 低電平輸出電壓 (VOL) |
最大值 0.5V (IOL = 24mA) |
| 傳播延遲 (tpd) |
典型值 8.5ns (VCC=5V, CL=50pF) |
| 輸入電容 |
典型值 10pF |
| 工作溫度 |
-55°C 至 +125°C |
| 封裝 |
16-PDIP |
核心特性
- 雙路2線至4線解碼器/多路分配器
- 低電平有效的使能端和輸出端,邏輯靈活
- 高速:5V時典型傳播延遲8.5ns
- 低功耗:最大ICC 80µA
- 寬工作溫度範圍:-55°C至+125°C
- TTL兼容輸入和輸出
- 平衡的傳播延遲和轉換時間
- 標準16引腳PDIP封裝,便於原型設計
典型應用場景
- 5G基站控制板中的存儲器解碼
- 汽車儀表盤顯示系統中的數據路由
- 工業PLC中的地址解碼
- 測試測量設備中的多路分配
- FPGA原型板中的邏輯擴展
環球供應鏈與批發合作夥伴方案
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我們的核心優勢包括:
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