CD74HC688NSR TI Comparators | 20-SO | 8-Bit Identity, Active Low Output

Product Overview

The CD74HC688NSR from Texas Instruments is a high-speed CMOS 8-bit magnitude/identity comparator designed for use in advanced digital systems. It compares two 8-bit binary or BCD words and provides an active-low output (P=Q) when the two words are equal. The device features low power consumption, high noise immunity, and compatibility with TTL logic levels. Housed in a 20-pin SOIC package, it is ideal for space-constrained applications requiring reliable comparison functions.

Detailed Technical Specifications

Key Features

• High-speed CMOS technology with typical propagation delay of 30 ns at 5V
• Wide operating voltage range: 2V to 6V
• Low power consumption: 80 µA max ICC at 25°C
• Balanced propagation delays: tPLH and tPHL
• TTL input and output compatibility
• 8-bit comparison with active-low output
• Standardized symmetrical output characteristics
• ESD protection exceeds 2000V per MIL-STD-883, Method 3015

Target Applications

• 5G base station control logic for address decoding and error detection
• Automotive dashboard display systems for data validation
• Industrial programmable logic controllers (PLCs) for sensor data comparison
• Network routers and switches for packet header verification
• Medical imaging equipment for image data integrity checks
• Consumer electronics like gaming consoles for memory address comparison

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for CD74HC688NSR. 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

CD74HC688NSR 是德州儀器推出的一款高速 CMOS 8 位幅度/恒等比較器，專為先進數字系統設計。它能比較兩個 8 位二進制或 BCD 碼字，並在兩者相等時提供低電平有效輸出（P=Q）。該器件具有低功耗、高抗噪性和與 TTL 邏輯電平兼容的特點。採用 20 引腳 SOIC 封裝，非常適合需要可靠比較功能的空間受限應用。

詳細技術參數

核心特性

• 高速 CMOS 技術，5V 時典型傳播延遲為 30 ns
• 寬工作電壓範圍：2V 至 6V
• 低功耗：25°C 時最大 ICC 為 80 µA
• 平衡的傳播延遲：tPLH 和 tPHL
• TTL 輸入和輸出兼容
• 8 位比較，低電平有效輸出
• 標準化對稱輸出特性
• ESD 保護超過 2000V（符合 MIL-STD-883，方法 3015）

典型應用場景

• 5G 基站控制邏輯，用於地址解碼和錯誤檢測
• 汽車儀表盤顯示系統，用於數據驗證
• 工業可編程邏輯控制器 (PLC)，用於傳感器數據比較
• 網絡路由器和交換機，用於數據包頭驗證
• 醫療成像設備，用於圖像數據完整性檢查
• 消費電子產品如遊戲機，用於存儲器地址比較

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 CD74HC688NSR 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]