SN74LS644-1N TI Bus Transceiver | 20-PDIP | 8-Bit, Inverting, 3-State

Product Overview

The SN74LS644-1N is a high-performance 8-bit bus transceiver from Texas Instruments, designed for bidirectional asynchronous communication between data buses. It features inverting outputs and 3-state outputs for bus-oriented applications. Housed in a 20-pin PDIP package, this device operates from a standard 5V supply and is characterized for operation from 0°C to 70°C.

Detailed Technical Specifications

Key Features

• 8-bit bidirectional bus transceiver with inverting outputs
• 3-state outputs for bus isolation
• Low power consumption: 45mW typical
• High noise immunity: typical 0.4V at VCC = 5V
• Inputs and outputs are compatible with TTL logic levels
• Output sink capability: 8mA
• Output source capability: -400µA
• Standard 20-pin PDIP package for easy prototyping

Target Applications

• Data communication in 5G base station control boards
• Bus interface in automotive dashboard display systems
• Memory address/data bus buffering in industrial PLCs
• Signal routing in telecom switching equipment
• General-purpose bidirectional data transfer in embedded systems

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN74LS644-1N. 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

SN74LS644-1N 是德州儀器生產的高性能8位總線收發器，專為數據總線之間的雙向異步通信而設計。它具有反相輸出和三態輸出，適用於總線導向的應用。該器件採用20引腳PDIP封裝，在標準5V電源下工作，工作溫度範圍為0°C至70°C。

詳細技術參數

核心特性

• 8位雙向總線收發器，帶反相輸出
• 三態輸出，實現總線隔離
• 低功耗：典型值 45mW
• 高抗噪能力：VCC = 5V 時典型值 0.4V
• 輸入和輸出兼容TTL邏輯電平
• 輸出灌電流能力：8mA
• 輸出拉電流能力：-400µA
• 標準20引腳PDIP封裝，便於原型設計

典型應用場景

• 5G基站控制板中的數據通信
• 汽車儀表盤顯示系統的總線接口
• 工業PLC中的存儲器地址/數據總線緩衝
• 電信交換設備中的信號路由
• 嵌入式系統中的通用雙向數據傳輸

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN74LS644-1N 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]