SN74LS688N TI 8-Bit Magnitude Comparator | 20-PDIP | 4.75V-5.25V, 8-Bit

Product Overview

The SN74LS688N is a high-performance 8-bit magnitude comparator from Texas Instruments, designed for digital systems requiring equality comparison. It compares two 8-bit binary words (P and Q) and provides an output (P=Q) when all corresponding bits are equal. The device features open-collector outputs for wired-OR applications and operates from a standard 5V supply. Housed in a 20-pin PDIP package, it is ideal for through-hole PCB designs.

Detailed Technical Specifications

Key Features

• 8-bit equality comparison with active-low output (P=Q)
• Open-collector outputs for wired-AND capability
• Typical propagation delay of 18ns
• Low power consumption: 35mW typical
• Input clamp diodes for transient protection
• Standard 5V TTL logic compatible

Target Applications

• Address decoding in microprocessor systems (e.g., 8085, Z80)
• Data bus equality checking in industrial controllers
• Memory bank selection in embedded systems
• Digital comparators in 5G base station control logic
• Automotive dashboard display logic (e.g., odometer comparison)
• Security systems for code matching

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 是德州儀器生產的高性能8位幅度比較器，專為需要相等比較的數字系統設計。它比較兩個8位二進制字（P和Q），當所有對應位相等時提供輸出（P=Q）。該器件具有開集電極輸出，適用於線與應用，並在標準5V電源下工作。採用20引腳PDIP封裝，適合通孔PCB設計。

詳細技術參數

核心特性

• 8位相等比較，低電平有效輸出 (P=Q)
• 開集電極輸出，支持線與功能
• 典型傳播延遲18ns
• 低功耗：典型35mW
• 輸入鉗位二極管，提供瞬態保護
• 標準5V TTL邏輯兼容

典型應用場景

• 微處理器系統中的地址解碼（如8085、Z80）
• 工業控制器中的數據總線相等檢查
• 嵌入式系統中的存儲體選擇
• 5G基站控制邏輯中的數字比較
• 汽車儀表盤顯示邏輯（如里程表比較）
• 安全系統中的代碼匹配

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]