LM339QT ST Comparator | 16-QFN (3x3) | Low Power, Open Collector Output

Product Overview

The LM339QT from STMicroelectronics is a low-power, quad voltage comparator designed for a wide range of applications. It features four independent comparators with open-collector outputs, making it ideal for interfacing with various logic families. The device operates from a single power supply over a wide voltage range of 2V to 36V (or ±1V to ±18V for dual supplies) and has a very low supply current drain (0.8 mA typical) independent of the supply voltage. The LM339QT is housed in a compact 16-QFN (3x3 mm) package, suitable for space-constrained designs.

Detailed Technical Specifications

Key Features

• Low power consumption: 0.8 mA total supply current
• Wide single supply voltage range: 2V to 36V
• Open collector outputs for wired-AND connection
• Low input offset voltage: 2 mV typical
• Low input bias current: 25 nA typical
• Fast response time: 1.3 μs typical
• Operating temperature range: -40°C to +125°C
• Compact 16-QFN (3x3 mm) package

Target Applications

• 5G base station power supply monitoring
• Automotive dashboard warning systems
• Battery management systems
• Industrial process control
• Portable consumer electronics

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for LM339QT. 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

LM339QT 是意法半導體推出的一款低功耗四路電壓比較器，適用於多種應用場景。它包含四個獨立的比較器，具有開集電極輸出，便於與各種邏輯系列接口。該器件可在 2V 至 36V（或雙電源 ±1V 至 ±18V）的寬電源電壓範圍內工作，且電源電流消耗極低（典型值 0.8 mA），與電源電壓無關。LM339QT 採用緊湊的 16-QFN（3x3 mm）封裝，適合空間受限的設計。

詳細技術參數

核心特性

• 低功耗：總電源電流 0.8 mA
• 寬單電源電壓範圍：2V 至 36V
• 開集電極輸出，支持線與連接
• 低輸入失調電壓：典型值 2 mV
• 低輸入偏置電流：典型值 25 nA
• 快速響應時間：典型值 1.3 μs
• 工作溫度範圍：-40°C 至 +125°C
• 緊湊的 16-QFN（3x3 mm）封裝

典型應用場景

• 5G 基站電源監控
• 汽車儀表盤報警系統
• 電池管理系統
• 工業過程控制
• 便攜式消費電子產品

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 LM339QT 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]