CD74HC688E TI 8-Bit Identity Comparator | 20-PDIP | 2V-6V, 8-Bit

Product Overview

The CD74HC688E from Texas Instruments is a high-speed CMOS 8-bit identity comparator designed for digital systems requiring precise equality detection. It compares two 8-bit binary or BCD words (P and Q) and provides a low-active output (P=Q) when all corresponding bits are equal. Operating from 2V to 6V, it features low power consumption and high noise immunity typical of HC logic. The 20-pin PDIP package enables easy prototyping and through-hole assembly.

Detailed Technical Specifications

Key Features

• 8-bit identity comparator with active-low output (P=Q)
• Wide operating voltage range: 2V to 6V
• High noise immunity: typical 30% of VCC
• Low power consumption: 80 µA max ICC
• Balanced propagation delays: tPHL = tPLH
• Standardized symmetrical output characteristics
• Compatible with TTL levels (VIL = 0.8V, VIH = 2V)
• ESD protection exceeds 2000V per MIL-STD-883

Target Applications

• Digital comparators in 5G base station control logic
• Address decoding in automotive dashboard displays
• Industrial PLC input/output matching
• Memory address verification in networking equipment
• Data validation in medical monitoring devices

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for CD74HC688E. 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

CD74HC688E 是德州儀器推出的高速 CMOS 8 位元恆等比較器，專為需要精確相等檢測的數位系統設計。它比較兩個 8 位元二進制或 BCD 字（P 和 Q），並在對應位元全部相等時提供低電平有效輸出（P=Q）。工作電壓範圍為 2V 至 6V，具有 HC 邏輯典型的低功耗和高抗噪性。20 引腳 PDIP 封裝便於原型設計和通孔組裝。

詳細技術參數

核心特性

• 8 位元恆等比較器，低電平有效輸出 (P=Q)
• 寬工作電壓範圍：2V 至 6V
• 高抗噪性：典型值為 VCC 的 30%
• 低功耗：最大 ICC 80 µA
• 平衡傳播延遲：tPHL = tPLH
• 標準化對稱輸出特性
• 與 TTL 電平相容 (VIL=0.8V, VIH=2V)
• ESD 保護超過 2000V (MIL-STD-883)

典型應用場景

• 5G 基地台控制邏輯中的數位比較器
• 汽車儀表板顯示中的位址解碼
• 工業 PLC 輸入/輸出匹配
• 網路設備中的記憶體位址驗證
• 醫療監控設備中的資料驗證

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 CD74HC688E 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]