SN74LS688N TI 8-Bit Magnitude Comparator | 20V, 8-Bit, 20ns

Product Overview

The SN74LS688N is a high-speed 8-bit magnitude comparator from Texas Instruments, designed for comparing two 8-bit binary or BCD words. It features a P (A = B) output and an active-low enable input (G). The device is implemented using Schottky-clamped TTL technology to achieve propagation delays as low as 20 ns. It operates from a single 5V supply and is available in a 20-pin DIP package. The SN74LS688N is ideal for applications requiring fast equality detection, such as address decoding in microprocessor systems, data processing, and control logic.

Detailed Technical Specifications

Key Features

• 8-bit magnitude comparison with P (A = B) output
• Active-low enable input (G) for cascading
• Schottky-clamped TTL for high speed: 20 ns typical propagation delay
• Low power consumption: 45 mW typical
• Single 5V supply operation
• Input clamp diodes to limit ringing
• Standard 20-pin DIP package

Target Applications

• Address decoding in microprocessor systems (e.g., Intel 8085, Z80)
• Data equality detection in digital communication systems
• Control logic in industrial automation (e.g., PLCs)
• Memory address comparison in embedded systems
• 5G base station control logic
• Automotive dashboard display controllers

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN74LS688N. 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

SN74LS688N 是德州儀器（TI）生產的高速8位幅度比較器，用於比較兩個8位二進制或BCD碼。它具有P（A = B）輸出和低電平有效的使能輸入（G）。該器件採用肖特基箝位TTL技術，傳播延遲低至20 ns。它由單一5V電源供電，採用20引腳DIP封裝。SN74LS688N 非常適合需要快速相等檢測的應用，如微處理器系統中的地址解碼、數據處理和控制邏輯。

詳細技術參數

核心特性

• 8位幅度比較，帶P（A = B）輸出
• 低電平有效使能輸入（G），便於級聯
• 肖特基箝位TTL，高速：典型傳播延遲20 ns
• 低功耗：典型45 mW
• 單一5V電源供電
• 輸入箝位二極管，抑制振鈴
• 標準20引腳DIP封裝

典型應用場景

• 微處理器系統中的地址解碼（例如 Intel 8085、Z80）
• 數字通信系統中的數據相等檢測
• 工業自動化中的控制邏輯（例如 PLC）
• 嵌入式系統中的存儲器地址比較
• 5G基站控制邏輯
• 汽車儀表盤顯示控制器

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN74LS688N 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]