SN74LS390NSR TI Dual 4-Bit Decade Counter | 16-SO | 4.75V-5.25V, 0°C-70°C

Product Overview

The SN74LS390NSR is a dual 4-bit decade counter from Texas Instruments, featuring two independent decade counters in a single 16-pin SOIC package. Each counter consists of a divide-by-2 and a divide-by-5 section, which can be connected to form a decade counter. The device operates from a 4.75V to 5.25V supply voltage and is specified for the commercial temperature range of 0°C to 70°C. It is designed for high-speed counting applications and is fully compatible with TTL logic levels.

Detailed Technical Specifications

Key Features

• Dual independent decade counters in one package
• Divide-by-2 and divide-by-5 sections for flexible counting
• High-speed operation: typical propagation delay of 18 ns
• Wide operating voltage range: 4.75V to 5.25V
• TTL compatible inputs and outputs
• Standard 16-pin SOIC package for space-saving designs
• Commercial temperature range: 0°C to 70°C

Target Applications

• 5G base station timing and synchronization circuits
• Automotive dashboard display counters (e.g., odometer, trip meter)
• Industrial frequency dividers and event counters
• Digital clocks and timers
• Test and measurement equipment
• Consumer electronics with counting functions

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN74LS390NSR. 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

SN74LS390NSR 是德州儀器（TI）的一款雙路4位十進制計數器，採用16引腳SOIC封裝，內部集成兩個獨立的十進制計數器。每個計數器由一個二分頻和一個五分頻部分組成，可連接形成十進制計數器。器件工作電壓範圍為4.75V至5.25V，指定商用溫度範圍0°C至70°C。專為高速計數應用設計，完全兼容TTL邏輯電平。

詳細技術參數

核心特性

• 單一封裝內集成兩個獨立十進制計數器
• 二分頻和五分頻部分，靈活計數
• 高速操作：典型傳播延遲18 ns
• 寬工作電壓範圍：4.75V至5.25V
• TTL兼容輸入和輸出
• 標準16引腳SOIC封裝，節省空間
• 商用溫度範圍：0°C至70°C

典型應用場景

• 5G基站定時和同步電路
• 汽車儀表盤顯示計數器（如里程表、行程表）
• 工業分頻器和事件計數器
• 數字時鐘和定時器
• 測試和測量設備
• 帶計數功能的消費電子產品

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN74LS390NSR 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]