SN74LS138N TI Decoder/Demultiplexer | 16-PDIP | 3-to-8 Line, Active Low Output

Product Overview

The SN74LS138N is a high-performance 3-to-8 line decoder/demultiplexer from Texas Instruments, designed for memory decoding and data routing applications. Housed in a 16-pin PDIP package, this device features three enable inputs (two active low and one active high) for flexible control, and active low outputs for direct interface with TTL logic. It operates over a wide voltage range of 4.75V to 5.25V and offers typical propagation delays of 18ns, making it suitable for high-speed digital systems.

Detailed Technical Specifications

Key Features

• 3-to-8 line decoder/demultiplexer function
• Three enable inputs for cascading and expansion
• Active low outputs for direct TTL interface
• Low power consumption: 45 mW typical
• High speed: 18 ns typical propagation delay
• Wide operating temperature range: 0°C to 70°C
• Standard 16-pin PDIP package for easy prototyping

Target Applications

• Memory decoding in embedded systems (e.g., ARM Cortex-M based controllers)
• Data routing in telecommunications equipment (e.g., 5G base station control boards)
• Address decoding in industrial automation (e.g., PLC I/O modules)
• Multiplexing in automotive infotainment systems (e.g., dashboard display controllers)
• Logic function implementation in FPGA prototyping boards

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN74LS138N. Our core advantages include:

• 24/7 Global Customer Support: Professional team providing instant quotes and technical support worldwide.
• In-stock Inventory, Same-day Shipping: We maintain localized stock; orders confirmed before 4 PM are shipped the same day.
• HK-SZ Synergy, Flexible Settlement: Direct global shipping from Shenzhen with support for HK bank transfers and multi-currency.
• Escrow Secured Transactions: We support Escrow.com for secure transactions, ensuring peace of mind for batch orders.
• 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.

• 100% Original & Authentic: All components are guaranteed to be authentic with strict quality control.
• RoHS Compliant: All electronic components comply with international environmental and safety standards.
• Original Factory Packaging: We maintain original factory packaging and seals to ensure ESD protection and physical integrity.

產品概述

SN74LS138N 是德州儀器（TI）推出的高性能3線轉8線解碼器/多路分配器，採用16引腳PDIP封裝。該器件具有三個使能輸入（兩個低電平有效，一個高電平有效）以實現靈活控制，並提供低電平有效輸出，可直接與TTL邏輯接口。工作電壓範圍為4.75V至5.25V，典型傳播延遲為18ns，適用於高速數字系統。

詳細技術參數

核心特性

• 3線轉8線解碼器/多路分配器功能
• 三個使能輸入，便於級聯和擴展
• 低電平有效輸出，直接TTL接口
• 低功耗：典型值 45 mW
• 高速：典型傳播延遲 18 ns
• 寬工作溫度範圍：0°C 至 70°C
• 標準16引腳PDIP封裝，易於原型設計

典型應用場景

• 嵌入式系統中的存儲器解碼（例如ARM Cortex-M控制器）
• 電信設備中的數據路由（例如5G基站控制板）
• 工業自動化中的地址解碼（例如PLC I/O模塊）
• 汽車信息娛樂系統中的多路復用（例如儀表盤顯示控制器）
• FPGA原型板中的邏輯功能實現

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN74LS138N 提供全面的供應鏈與批發解決方案。 我們的核心優勢包括：

• 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。
• 現貨庫存，即日發貨：確保現貨充足。下午 4 點前確認訂單，即可安排當天寄出。
• 深港聯動，結算靈活：深圳直發全球，物流高效可靠；支援香港銀行戶口轉賬及多幣種結算。
• Escrow 擔保交易：支援 Escrow.com 平台交易，保障買賣雙方權益，小批量訂單亦可安心在線下單。
• 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。

品質保證與合規

Jasin Chip 承諾所有出貨產品均為原廠正貨，具備完善的品質保證及產品可追溯性。

• 100% 原廠正貨：承諾所有供應零件均為原裝現貨，品質嚴格把關，來源清晰可追溯。
• 符合 RoHS 認證：所有電子元器件均符合國際環保標準及相關安全認證。
• 原廠封裝保護：嚴格保留原廠原始包裝及封條，確保物流過程中的靜電防護 (ESD) 與物理安全。

以上產品均為原廠正貨，提供 BOM 配單及現貨庫存支援，歡迎查詢。

HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
WhatsApp: +852 5209 9691 | Email: [email protected]