CD74HC191E TI Counter IC | 16-PDIP | 4-Bit, Synchronous, Up/Down

Product Overview

The CD74HC191E from Texas Instruments is a high-speed CMOS 4-bit synchronous up/down counter. It features a synchronous counting operation, preset capability, and a ripple-carry output for easy cascading. The device operates over a wide voltage range of 2V to 6V and is ideal for use in frequency dividers, digital timers, and control systems. Packaged in a 16-pin PDIP, it offers robust performance for industrial and consumer applications.

Detailed Technical Specifications

Key Features

• Synchronous 4-bit up/down counting
• Preset (parallel load) capability
• Ripple-carry output for cascading
• Wide operating voltage range: 2V to 6V
• High noise immunity: typical 30% of Vcc
• Low power consumption: 80 µA max at 25°C
• Balanced propagation delays
• Standard 16-pin PDIP package

Target Applications

• Frequency dividers in 5G base station timing modules
• Digital timers in automotive dashboard displays
• Programmable counters in industrial automation controllers
• Event counters in consumer electronics like washing machines
• Up/down counting in elevator control systems

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for CD74HC191E. 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

CD74HC191E 是德州儀器生產的高速 CMOS 4 位同步加/減計數器。它具有同步計數操作、預置功能和級聯用的紋波進位輸出。該器件在 2V 至 6V 的寬電壓範圍內工作，非常適合用於分頻器、數字定時器和控制系統。採用 16 引腳 PDIP 封裝，為工業和消費類應用提供穩健的性能。

詳細技術參數

核心特性

• 同步 4 位加/減計數
• 預置（並行加載）功能
• 級聯用的紋波進位輸出
• 寬工作電壓範圍：2V 至 6V
• 高抗噪能力：典型值為 Vcc 的 30%
• 低功耗：25°C 時最大 80 µA
• 平衡的傳播延遲
• 標準 16 引腳 PDIP 封裝

典型應用場景

• 5G 基站定時模塊中的分頻器
• 汽車儀表盤顯示中的數字定時器
• 工業自動化控制器中的可編程計數器
• 洗衣機等消費電子產品中的事件計數器
• 電梯控制系統中的加/減計數

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 CD74HC191E 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]