SN54ALS688J TI 8-Bit Identity Comparator | 20ns, 4.5V-5.5V

Product Overview

The SN54ALS688J from Texas Instruments is a high-speed 8-bit identity comparator designed for digital systems requiring fast and accurate data comparison. It compares two 8-bit words (P and Q) and provides a low-level output when they are equal. Fabricated with advanced Schottky-clamped ALS technology, it offers a typical propagation delay of 20 ns, making it suitable for high-performance computing and communication systems. The device operates over a wide supply voltage range of 4.5V to 5.5V and is specified for the full military temperature range (-55°C to +125°C). Housed in a 20-pin ceramic DIP package, it ensures reliable operation in harsh environments.

Detailed Technical Specifications

Key Features

• 8-bit identity comparison with active-low output (P=Q)
• Fast propagation delay: 20 ns typical at 5V
• Low power consumption: 50 mW typical
• Schottky-clamped ALS technology for high speed
• Wide supply voltage range: 4.5V to 5.5V
• Military temperature range: -55°C to +125°C
• Input clamp diodes for improved noise margin
• Standard 20-pin DIP package

Target Applications

• Address comparison in memory systems (e.g., SRAM/DRAM controllers)
• Data validation in 5G base station control logic
• Error detection in automotive dashboard displays
• Industrial PLCs for sensor data matching
• Military avionics for secure data comparison

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN54ALS688J. 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

SN54ALS688J 是德州儀器推出的一款高速8位元恒等比較器，專為需要快速準確數據比較的數字系統設計。它比較兩個8位元字（P和Q），並在相等時提供低電平輸出。採用先進的肖特基箝位ALS工藝製造，典型傳播延遲為20 ns，適用於高性能計算和通信系統。器件在4.5V至5.5V的寬電源電壓範圍內工作，並指定用於完整的軍用溫度範圍（-55°C至+125°C）。採用20引腳陶瓷DIP封裝，確保在惡劣環境下的可靠運行。

詳細技術參數

核心特性

• 8位元恒等比較，低電平有效輸出 (P=Q)
• 快速傳播延遲：5V時典型值20 ns
• 低功耗：典型值50 mW
• 肖特基箝位ALS技術，實現高速
• 寬電源電壓範圍：4.5V至5.5V
• 軍用溫度範圍：-55°C至+125°C
• 輸入箝位二極管，改善噪聲容限
• 標準20引腳DIP封裝

典型應用場景

• 存儲器系統中的地址比較（如SRAM/DRAM控制器）
• 5G基站控制邏輯中的數據驗證
• 汽車儀表盤顯示中的錯誤檢測
• 工業PLC中的傳感器數據匹配
• 軍用航空電子中的安全數據比較

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN54ALS688J 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。
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• 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。

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HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
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