SN54LS191J TI Synchronous Up/Down Counter | 16-CDIP | 4-Bit, Binary, 20MHz

Product Overview

The SN54LS191J is a synchronous, reversible, 4-bit binary counter from Texas Instruments, designed for high-reliability military and industrial applications. It features a 16-pin ceramic dual-in-line package (CDIP) and operates over the full military temperature range (-55°C to +125°C). The counter can count up or down under the control of a direction input, and includes parallel load capability for presetting the count. With a typical clock frequency of 20 MHz, it is suitable for high-speed counting, frequency division, and timing applications.

Detailed Technical Specifications

Key Features

• Synchronous 4-bit binary up/down counter
• Parallel load for presetting count
• Ripple clock output for cascading
• Low power consumption (typical 35 mW)
• Wide operating voltage range
• Military temperature range
• High noise immunity
• Direct replacement for standard 54LS191

Target Applications

• 5G base station timing and synchronization circuits
• Automotive dashboard display counters
• Industrial process control counters
• Frequency dividers in communication systems
• Digital clocks and timers
• Military avionics and radar systems
• Test and measurement equipment

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN54LS191J. 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

SN54LS191J 是德州儀器推出的同步可逆4位二進制計數器，採用16引腳陶瓷雙列直插封裝（CDIP），專為高可靠性軍工和工業應用設計。它可在方向輸入控制下進行加/減計數，並支持並行加載以預設計數值。典型時鐘頻率為20 MHz，適用於高速計數、分頻和定時應用。

詳細技術參數

核心特性

• 同步4位二進制加/減計數器
• 並行加載功能，可預設計數值
• 紋波時鐘輸出，便於級聯
• 低功耗（典型值35 mW）
• 寬工作電壓範圍
• 軍工級溫度範圍
• 高抗噪能力
• 可直接替代標準54LS191

典型應用場景

• 5G基站定時與同步電路
• 汽車儀表盤顯示計數器
• 工業過程控制計數器
• 通信系統中的分頻器
• 數字時鐘和定時器
• 軍用航空電子與雷達系統
• 測試與測量設備

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN54LS191J 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]