PCA9539DBQR TI I2C I/O Expander | 24-SSOP | 16-bit, 2.3V-5.5V

Product Overview

The PCA9539DBQR from Texas Instruments is a 16-bit I²C-bus and SMBus I/O expander designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I²C interface (serial clock (SCL) and serial data (SDA)). The device features an interrupt output (INT) that can be connected to the microcontroller's interrupt input, allowing the system to be notified of input changes without polling. The PCA9539DBQR is available in a 24-pin SSOP package, making it suitable for space-constrained applications.

Detailed Technical Specifications

Key Features

• 16-bit bidirectional I/O ports
• I²C bus interface with up to 400 kHz clock frequency
• Open-drain interrupt output
• Low standby current consumption
• 5 V tolerant I/Os
• Power-on reset with all channels set as inputs
• No glitch on power-up
• Supports hot insertion
• ESD protection exceeds JESD 22

Target Applications

• 5G base station control and monitoring (e.g., fan control, status LEDs)
• Automotive dashboard switches and indicator lights
• Industrial PLC I/O expansion
• Server and telecom equipment (e.g., blade server front panel)
• Consumer electronics (e.g., smart home hubs, gaming consoles)
• Medical devices (e.g., patient monitoring keypads)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for PCA9539DBQR. 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

PCA9539DBQR 是德州儀器 (TI) 的一款 16 位 I²C 匯流排和 SMBus I/O 擴展器，工作電壓範圍為 2.3 V 至 5.5 V。它通過 I²C 介面（串列時鐘 SCL 和串列資料 SDA）為大多數微控制器系列提供通用遠端 I/O 擴展。該器件具有中斷輸出 (INT)，可連接到微控制器的中斷輸入，使系統無需輪詢即可獲知輸入變化。PCA9539DBQR 採用 24 引腳 SSOP 封裝，適合空間受限的應用。

詳細技術參數

核心特性

• 16 位雙向 I/O 埠
• I²C 匯流排介面，時脈頻率高達 400 kHz
• 開漏中斷輸出
• 低待機電流消耗
• 5 V 容忍 I/O
• 上電復位，所有通道設置為輸入
• 上電無突波
• 支援熱插入
• ESD 保護超過 JESD 22 標準

典型應用場景

• 5G 基地台控制與監控（例如風扇控制、狀態指示燈）
• 汽車儀表板開關和指示燈
• 工業 PLC I/O 擴展
• 伺服器和電信設備（例如刀鋒伺服器前面板）
• 消費電子（例如智慧家庭中樞、遊戲主機）
• 醫療設備（例如病人監護鍵盤）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 PCA9539DBQR 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]