SN74LS390NS TI Dual 4-Bit Decade Counter | 2x4-Bit, LS Logic

Product Overview

The SN74LS390NS is a dual 4-bit decade counter from Texas Instruments, part of the 74LS family of low-power Schottky logic devices. Each counter consists of four master-slave flip-flops internally connected to provide a divide-by-two section and a divide-by-five section. The device can be configured as a BCD decade counter or a 3-bit binary counter. It features independent clock inputs and clear functions for each counter, making it versatile for various counting applications. The SN74LS390NS is available in a 16-pin SOP package, suitable for surface-mount assembly.

Detailed Technical Specifications

Key Features

• Dual 4-bit decade counters with independent clock and clear
• Low power consumption (typical 45 mW per counter)
• High speed: typical propagation delay of 18 ns
• Wide operating voltage range: 4.75 V to 5.25 V
• Direct clear for each counter
• Outputs can drive up to 10 LS-TTL loads
• Fully compatible with TTL and CMOS logic levels

Target Applications

• Frequency dividers in 5G base station timing circuits
• Digital counters in automotive dashboard displays
• Industrial process control timers
• Consumer electronics like digital clocks and stopwatches
• Data communication equipment for bit rate division

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN74LS390NS. 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

SN74LS390NS 是德州儀器（TI）的一款雙路4位十進制計數器，屬於74LS低功耗肖特基邏輯系列。每個計數器由四個主從觸發器組成，內部連接提供一個二分頻部分和一個五分頻部分。該器件可配置為BCD十進制計數器或3位二進制計數器。每個計數器具有獨立的時鐘輸入和清零功能，適用於各種計數應用。SN74LS390NS 採用16引腳SOP封裝，適合表面貼裝。

詳細技術參數

核心特性

• 雙路4位十進制計數器，獨立時鐘和清零
• 低功耗（每個計數器典型值45 mW）
• 高速：典型傳播延遲18 ns
• 寬工作電壓範圍：4.75 V 至 5.25 V
• 每個計數器直接清零
• 輸出可驅動多達10個LS-TTL負載
• 完全兼容TTL和CMOS邏輯電平

典型應用場景

• 5G基站定時電路中的分頻器
• 汽車儀表盤顯示中的數字計數器
• 工業過程控制定時器
• 消費電子產品，如數字時鐘和秒錶
• 數據通信設備中的比特率分頻

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN74LS390NS 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]