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Product Overview
The SN74LS42D is a 4-to-10 line decoder/demultiplexer from Texas Instruments, part of the 74LS family. It accepts a 4-bit binary input and activates one of ten mutually exclusive outputs (Y0–Y9) based on the input code. The device is designed for high-performance memory decoding and data routing applications. It features low power consumption, high noise immunity, and is available in a compact 16-SOIC package.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.75V to 5.25V |
| Input Voltage (VI) |
0V to 5.5V |
| Output Voltage (VO) |
0V to 5.5V |
| High-Level Input Voltage (VIH) |
2V min |
| Low-Level Input Voltage (VIL) |
0.8V max |
| High-Level Output Current (IOH) |
-0.4 mA |
| Low-Level Output Current (IOL) |
8 mA |
| Propagation Delay Time (tpd) |
30 ns typ |
| Power Dissipation |
45 mW typ |
| Operating Temperature |
0°C to 70°C |
| Package |
16-SOIC |
Key Features
- 4-to-10 line decoding/demultiplexing
- Low power consumption: 45 mW typical
- High noise immunity: typically 1V
- Input clamp diodes for transient protection
- Fully TTL compatible
- Outputs sink 8 mA and source 0.4 mA
- Standard 16-pin SOIC package
Target Applications
- Memory address decoding in 5G base station control boards
- Data routing in automotive dashboard displays
- Industrial automation PLC I/O modules
- LED matrix display drivers
- Digital logic function generation
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74LS42D. 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
SN74LS42D 是德州儀器(TI)的一款 4 線轉 10 線解碼器/多路分配器,屬於 74LS 系列。它接收 4 位二進制輸入,並根據輸入碼啟動十個互斥輸出(Y0–Y9)中的一個。該器件專為高性能存儲器解碼和數據路由應用而設計,具有低功耗、高抗噪聲能力,並採用緊湊的 16-SOIC 封裝。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.75V 至 5.25V |
| 輸入電壓 (VI) |
0V 至 5.5V |
| 輸出電壓 (VO) |
0V 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 |
| 高電平輸出電流 (IOH) |
-0.4 mA |
| 低電平輸出電流 (IOL) |
8 mA |
| 傳播延遲時間 (tpd) |
典型值 30 ns |
| 功耗 |
典型值 45 mW |
| 工作溫度 |
0°C 至 70°C |
| 封裝 |
16-SOIC |
核心特性
- 4 線轉 10 線解碼/多路分配
- 低功耗:典型值 45 mW
- 高抗噪聲能力:典型值 1V
- 輸入箝位二極管,提供瞬態保護
- 完全兼容 TTL
- 輸出可灌入 8 mA 電流,拉出 0.4 mA 電流
- 標準 16 引腳 SOIC 封裝
典型應用場景
- 5G 基站控制板中的存儲器地址解碼
- 汽車儀表盤顯示中的數據路由
- 工業自動化 PLC I/O 模塊
- LED 矩陣顯示驅動器
- 數字邏輯功能生成
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN74LS42D 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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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。
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