SN74ALS688N TI 8-Bit Identity Comparator | 20-PDIP | 20ns, 4.5V-5.5V

Product Overview

The SN74ALS688N from Texas Instruments is a high-speed 8-bit identity comparator designed for digital systems requiring fast and accurate data comparison. Fabricated with advanced Schottky-clamped TTL (ALS) technology, it offers a typical propagation delay of 20ns while consuming minimal power. The device compares two 8-bit words (P and Q) and provides a low-level active output (P=Q) when the two inputs match. It operates from a single 5V supply and is available in a 20-pin PDIP package, making it suitable for through-hole PCB assembly in industrial and telecommunications equipment.

Detailed Technical Specifications

Key Features

• 8-bit identity comparator with active-low output
• Typical propagation delay of 20ns
• Low power consumption: 35mW typical
• Schottky-clamped TTL technology for high speed
• Inputs and outputs are fully TTL-compatible
• Open-collector output for wired-OR capability
• Wide operating voltage range: 4.5V to 5.5V
• Standard 20-pin PDIP package for easy integration

Target Applications

The SN74ALS688N is ideal for digital systems requiring fast address or data comparison. Specific applications include:

• Address decoding in 5G base station control boards
• Data validation in automotive dashboard displays
• Memory address comparison in industrial PLCs
• Error detection in network routers and switches
• Identity checking in security access control panels

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN74ALS688N. 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

SN74ALS688N 是德州儀器推出的一款高速8位元身份比較器，專為需要快速準確數據比較的數字系統設計。採用先進的肖特基箝位TTL（ALS）工藝，典型傳播延遲僅20ns，功耗極低。該器件比較兩個8位元字（P和Q），當兩個輸入匹配時，提供低電平有效輸出（P=Q）。它工作在單一5V電源下，採用20引腳PDIP封裝，適合工業和電信設備中的通孔PCB組裝。

詳細技術參數

核心特性

• 8位元身份比較器，低電平有效輸出
• 典型傳播延遲20ns
• 低功耗：典型值35mW
• 肖特基箝位TTL技術，實現高速
• 輸入和輸出完全兼容TTL
• 開集電極輸出，支持線或連接
• 寬工作電壓範圍：4.5V至5.5V
• 標準20引腳PDIP封裝，易於集成

典型應用場景

SN74ALS688N 適用於需要快速地址或數據比較的數字系統。具體應用包括：

• 5G基站控制板中的地址解碼
• 汽車儀表盤顯示中的數據驗證
• 工業PLC中的存儲器地址比較
• 網絡路由器和交換機中的錯誤檢測
• 安全門禁控制面板中的身份核對

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN74ALS688N 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]