SN74ALS191ANSR TI Synchronous Up/Down Counter | 16-SO | 4-Bit, Binary, 20MHz

Product Overview

The SN74ALS191ANSR is a synchronous, 4-bit binary up/down counter from Texas Instruments, designed for high-performance digital systems. It features a fully independent clock circuit and a look-ahead carry for high-speed counting. The device operates from a 4.5V to 5.5V supply and is available in a 16-pin SO package (NSR suffix). It is ideal for applications requiring reliable counting, frequency division, or timing control.

Detailed Technical Specifications

Key Features

• Synchronous 4-bit binary up/down counting
• Look-ahead carry for high-speed cascading
• Fully independent clock circuit
• Asynchronous clear and preset inputs
• Outputs source/sink 24 mA
• Low power consumption: 65 mW (typ)
• ESD protection exceeds 2000V per MIL-STD-883

Target Applications

• 5G base station timing and control modules
• Automotive dashboard display controllers
• 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 SN74ALS191ANSR. 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

SN74ALS191ANSR 是德州儀器推出的同步4位二進制加/減計數器，專為高性能數字系統設計。它具有完全獨立的時鐘電路和先行進位功能，支持高速計數。器件工作電壓為4.5V至5.5V，採用16引腳SO封裝（NSR後綴），適用於需要可靠計數、分頻或定時控制的應用。

詳細技術參數

核心特性

• 同步4位二進制加/減計數
• 先行進位支持高速級聯
• 完全獨立的時鐘電路
• 異步清零和預置輸入
• 輸出拉/灌電流24 mA
• 低功耗：65 mW（典型值）
• ESD保護超過2000V（MIL-STD-883）

典型應用場景

• 5G基站定時與控制模塊
• 汽車儀表盤顯示控制器
• 工業可編程邏輯控制器（PLC）
• 通信系統中的分頻器
• 測試與測量設備中的數字計數器

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN74ALS191ANSR 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]