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Product Overview
The CD74HCT138E-NG is a high-speed CMOS 3-to-8 line decoder/demultiplexer from Texas Instruments. It is designed to convert three binary address inputs into eight mutually exclusive active-low outputs. The device features three enable inputs (G1, G2A, G2B) for flexible control, making it ideal for memory decoding and data routing applications. Housed in a 16-pin PDIP package, it operates over a wide voltage range of 4.5V to 5.5V and is compatible with TTL logic levels.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.5V to 5.5V |
| Input Voltage (VI) |
0V to VCC |
| 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) |
-4mA |
| Low-Level Output Current (IOL) |
4mA |
| Propagation Delay (tpd) |
23ns (typ) at 5V |
| Operating Temperature |
-55°C to +125°C |
| Package |
16-PDIP |
Key Features
- 3-to-8 line decoder/demultiplexer with active-low outputs
- Three enable inputs for cascading and expansion
- High-speed CMOS technology with TTL compatibility
- Wide operating voltage range: 4.5V to 5.5V
- Low power consumption: 80µA (max) ICC
- Balanced propagation delays and transition times
- Standard 16-pin PDIP package for easy prototyping
Target Applications
- Memory decoding in 5G base station control boards
- Address decoding in automotive dashboard display systems
- Data routing in industrial PLCs (Programmable Logic Controllers)
- Demultiplexing in test equipment like oscilloscopes
- Enable/disable control in communication modules
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
CD74HCT138E-NG. 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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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
CD74HCT138E-NG 是德州儀器 (TI) 生產的高速 CMOS 3 線轉 8 線解碼器/多路分配器。它將三個二進制地址輸入轉換為八個互斥的低電平有效輸出。器件具有三個使能輸入(G1、G2A、G2B),可實現靈活控制,非常適合存儲器解碼和數據路由應用。採用 16 引腳 PDIP 封裝,工作電壓範圍為 4.5V 至 5.5V,兼容 TTL 邏輯電平。
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 VCC |
| 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) |
-4mA |
| 低電平輸出電流 (IOL) |
4mA |
| 傳播延遲 (tpd) |
23ns (典型值) 在 5V |
| 工作溫度 |
-55°C 至 +125°C |
| 封裝 |
16-PDIP |
核心特性
- 3 線轉 8 線解碼器/多路分配器,低電平有效輸出
- 三個使能輸入,便於級聯和擴展
- 高速 CMOS 技術,兼容 TTL
- 寬工作電壓範圍:4.5V 至 5.5V
- 低功耗:ICC 最大 80µA
- 平衡的傳播延遲和轉換時間
- 標準 16 引腳 PDIP 封裝,易於原型設計
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地址解碼
- 工業 PLC(可編程邏輯控制器)中的數據路由
- 示波器等測試設備中的多路分配
- 通信模塊中的使能/禁用控制
環球供應鏈與批發合作夥伴方案
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