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Product Overview
The SN74HC138PWT is a high-performance 3-to-8 line decoder/demultiplexer from Texas Instruments, designed for low-power and high-speed applications. It features three enable inputs (two active low and one active high) to simplify system design. The device is ideal for memory decoding, data routing, and general-purpose logic applications. Packaged in a compact 16-TSSOP, it offers excellent thermal performance and space savings.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
2V to 6V |
| Input Voltage (VI) |
0V to VCC |
| Output Voltage (VO) |
0V to VCC |
| High-Level Input Voltage (VIH) |
0.7 × VCC (min) |
| Low-Level Input Voltage (VIL) |
0.3 × VCC (max) |
| High-Level Output Current (IOH) |
-5.2 mA (at VCC=4.5V) |
| Low-Level Output Current (IOL) |
5.2 mA (at VCC=4.5V) |
| Propagation Delay (tpd) |
23 ns (typ) at VCC=4.5V, CL=50pF |
| Operating Temperature |
-40°C to +85°C |
| Package |
16-TSSOP |
Key Features
- 3-to-8 line decoder/demultiplexer with three enable inputs
- Wide supply voltage range: 2V to 6V
- Low power consumption: 80 µA (max) at VCC=6V
- High noise immunity: typical VNIH = VNIL = 28% of VCC
- Balanced propagation delays: tPHL = tPLH
- Inputs accept voltages up to 6V regardless of supply voltage
- Outputs can drive up to 10 LSTTL loads
- ESD protection exceeds 2000V per MIL-STD-883, Method 3015
Target Applications
- Memory decoding in 5G base station control boards
- Data routing in automotive dashboard displays
- Address decoding in industrial PLC systems
- Demultiplexing in IoT sensor hubs
- Logic expansion in FPGA prototyping platforms
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74HC138PWT. 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
SN74HC138PWT 是德州儀器推出的高性能3線轉8線解碼器/多路分配器,專為低功耗和高速應用設計。它包含三個使能輸入(兩個低電平有效和一個高電平有效),簡化了系統設計。該器件非常適合存儲器解碼、數據路由和通用邏輯應用。採用緊湊的16-TSSOP封裝,提供優異的熱性能和空間節省。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
2V 至 6V |
| 輸入電壓 (VI) |
0V 至 VCC |
| 輸出電壓 (VO) |
0V 至 VCC |
| 高電平輸入電壓 (VIH) |
0.7 × VCC (最小值) |
| 低電平輸入電壓 (VIL) |
0.3 × VCC (最大值) |
| 高電平輸出電流 (IOH) |
-5.2 mA (VCC=4.5V 時) |
| 低電平輸出電流 (IOL) |
5.2 mA (VCC=4.5V 時) |
| 傳播延遲 (tpd) |
23 ns (典型值,VCC=4.5V, CL=50pF) |
| 工作溫度 |
-40°C 至 +85°C |
| 封裝 |
16-TSSOP |
核心特性
- 3線轉8線解碼器/多路分配器,帶三個使能輸入
- 寬電源電壓範圍:2V 至 6V
- 低功耗:VCC=6V 時最大 80 µA
- 高抗噪能力:典型 VNIH = VNIL = 28% VCC
- 平衡傳播延遲:tPHL = tPLH
- 輸入可承受高達 6V 電壓,與電源電壓無關
- 輸出可驅動多達 10 個 LSTTL 負載
- ESD 保護超過 2000V(MIL-STD-883 方法 3015)
典型應用場景
- 5G基站控制板中的存儲器解碼
- 汽車儀表盤顯示中的數據路由
- 工業PLC系統中的地址解碼
- 物聯網傳感器集線器中的多路分配
- FPGA原型平台中的邏輯擴展
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN74HC138PWT 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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