LM239D ST Low-Power Quad Comparator | 14-SO | 2-36V Supply, Open-Collector Output

Product Overview

The LM239D from STMicroelectronics is a low-power, quad voltage comparator designed for a wide range of applications. It operates from a single power supply over a wide voltage range of 2V to 36V (or dual supplies ±1V to ±18V) and features low supply current drain (0.4 mA per comparator at 5V). The open-collector outputs allow wired-AND connections and interface with various logic families. The device is offered in a compact 14-SO package, making it suitable for space-constrained designs.

Detailed Technical Specifications

Key Features

• Low power consumption: 0.4 mA per comparator at 5V
• Wide supply voltage range: 2V to 36V
• Open-collector outputs for wired-AND and logic compatibility
• 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 +105°C
• Available in 14-SO package

Target Applications

• 5G base station power supply monitoring and fault detection
• Automotive dashboard warning systems (e.g., overvoltage/undervoltage detection)
• Industrial sensor threshold detection (e.g., temperature, pressure)
• Battery management systems for voltage level detection
• Logic level shifting and signal conditioning

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for LM239D. 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

LM239D 是意法半導體（STMicroelectronics）推出的一款低功耗四路電壓比較器，適用於多種應用場景。它可在 2V 至 36V 的寬電源電壓範圍內工作（或雙電源 ±1V 至 ±18V），並具有低電源電流消耗（5V 時每路比較器典型值 0.4 mA）。開集電極輸出支持線與連接，並可與各種邏輯系列接口。器件採用緊湊的 14-SO 封裝，適合空間受限的設計。

詳細技術參數

核心特性

• 低功耗：5V 時每路比較器 0.4 mA
• 寬電源電壓範圍：2V 至 36V
• 開集電極輸出，支持線與連接及邏輯兼容
• 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 +105°C
• 採用 14-SO 封裝

典型應用場景

• 5G 基站電源監控與故障檢測
• 汽車儀表盤報警系統（如過壓/欠壓檢測）
• 工業傳感器閾值檢測（如溫度、壓力）
• 電池管理系統的電壓電平檢測
• 邏輯電平轉換與信號調理

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 LM239D 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]