SN74HC191NSR TI Counter IC | 16-SO | 4-Bit, Synchronous, Up/Down

Product Overview

The SN74HC191NSR is a synchronous, 4-bit up/down counter from Texas Instruments, designed for high-speed CMOS logic applications. It features a wide operating voltage range of 2V to 6V, making it suitable for battery-powered and industrial systems. The device includes a carry look-ahead circuit for cascading without external logic, ensuring efficient multi-stage counting. Packaged in a 16-pin SOIC (NSR suffix), it offers a compact solution for space-constrained designs.

Detailed Technical Specifications

Key Features

• Synchronous 4-bit up/down counting
• Carry look-ahead for easy cascading
• Asynchronous clear function
• Parallel load capability
• Wide operating voltage range (2V to 6V)
• Low power consumption (80µA max ICC)
• High noise immunity (typically 30% of VCC)
• Compatible with TTL levels

Target Applications

• 5G base station control logic for channel counting
• Automotive dashboard odometer and trip meter
• Industrial programmable logic controllers (PLCs)
• Consumer electronics like digital clocks and timers
• Medical equipment for patient monitoring counters

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN74HC191NSR. 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

SN74HC191NSR 是德州儀器推出的同步4位元可逆計數器，適用於高速CMOS邏輯應用。其工作電壓範圍寬（2V至6V），適合電池供電及工業系統。器件包含進位預測電路，無需外部邏輯即可級聯，實現高效多級計數。採用16引腳SOIC封裝（NSR後綴），為空間受限設計提供緊湊方案。

詳細技術參數

核心特性

• 同步4位元可逆計數
• 進位預測，易於級聯
• 異步清零功能
• 並行加載能力
• 寬工作電壓範圍 (2V 至 6V)
• 低功耗 (最大 ICC 80µA)
• 高抗干擾性 (典型值 VCC 的 30%)
• 兼容TTL電平

典型應用場景

• 5G基站控制邏輯中的通道計數
• 汽車儀表盤里程表和行程表
• 工業可編程邏輯控制器 (PLC)
• 消費電子產品如數字時鐘和定時器
• 醫療設備中的患者監護計數器

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN74HC191NSR 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]