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SN74LS669NS TI Synchronous Up/Down Counter | 4-Bit, Binary, 20MHz
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Product Overview
The SN74LS669NS is a synchronous, presettable, 4-bit binary up/down counter from Texas Instruments. It features parallel load capability, ripple carry output for cascading, and operates at a typical clock frequency of 20 MHz. The device is designed for use in high-performance digital systems requiring counting, frequency division, or timing control.
Detailed Technical Specifications
| Parameter | Value |
|---|---|
| Supply Voltage (VCC) | 4.75 V to 5.25 V |
| Operating Temperature | 0°C to 70°C |
| Clock Frequency (max) | 20 MHz |
| Propagation Delay (Clock to Q) | 27 ns (typical) |
| Output Drive Capability | 8 LSTTL loads |
| Package Type | NS (SOP-16) |
Key Features
- Synchronous 4-bit binary up/down counting
- Parallel load for presetting count value
- Ripple carry output for easy cascading
- Edge-triggered clock input
- Asynchronous master reset
- Low power consumption (typical 45 mW)
Target Applications
- 5G base station timing and synchronization modules
- Automotive dashboard instrument clusters
- Industrial programmable logic controllers (PLCs)
- Frequency dividers in communication systems
- Digital counters in test and measurement equipment
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for SN74LS669NS. 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
SN74LS669NS 是德州儀器 (TI) 生產的同步、可預設、4位元二進位加/減計數器。它具有並行載入功能、用於級聯的漣波進位輸出，並以 20 MHz 的典型時脈頻率運作。該器件專為需要計數、分頻或時序控制的高性能數位系統而設計。
詳細技術參數
| 參數 | 數值 |
|---|---|
| 電源電壓 (VCC) | 4.75 V 至 5.25 V |
| 工作溫度 | 0°C 至 70°C |
| 最大時脈頻率 | 20 MHz |
| 傳播延遲 (時脈到 Q) | 27 ns (典型值) |
| 輸出驅動能力 | 8 個 LSTTL 負載 |
| 封裝類型 | NS (SOP-16) |
核心特性
- 同步 4 位元二進位加/減計數
- 並行載入以預設計數值
- 漣波進位輸出，便於級聯
- 邊緣觸發時脈輸入
- 非同步主重置
- 低功耗 (典型值 45 mW)
典型應用場景
- 5G 基地台時序與同步模組
- 汽車儀表板儀表組
- 工業可程式邏輯控制器 (PLC)
- 通訊系統中的分頻器
- 測試與量測設備中的數位計數器
環球供應鏈與批發合作夥伴方案
在 Jasin Chip，我們為 SN74LS669NS 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。
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HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
WhatsApp: +852 5209 9691 | Email: [email protected]
