PCA9544AZQNR TI Multiplexer | 20-BGAMICROSTARJUNIOR（4X3） | 4-Channel I2C, 1.65-5.5V

Product Overview

The PCA9544AZQNR from Texas Instruments is a 4-channel I2C-bus multiplexer with interrupt logic, designed for voltage-level translation and bus expansion in multi-master I2C systems. It allows up to four sub-buses to be selected via the I2C interface, enabling multiple devices with the same address to coexist on the same bus. The device operates from 1.65V to 5.5V, making it suitable for low-voltage applications. Housed in a compact 20-BGA MICROSTAR JUNIOR (4x3) package, it is ideal for space-constrained designs.

Detailed Technical Specifications

Key Features

• 4-channel I2C-bus multiplexer with interrupt logic
• Allows voltage-level translation between 1.8V, 2.5V, 3.3V, and 5V buses
• Low standby current: <1 µA
• Active-high reset input
• No glitch on power-up
• Supports hot insertion
• Compatible with I2C-bus standard mode and fast mode

Target Applications

• 5G base stations: Multiplexing I2C sensors for power management and temperature monitoring
• Automotive dashboard: Connecting multiple display controllers and touch ICs
• Industrial automation: Managing multiple I2C ADCs and DACs in PLC modules
• Consumer electronics: Smart speakers with multiple audio codecs and sensors
• Medical devices: Patient monitoring systems with multiple sensor hubs

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for PCA9544AZQNR. 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

PCA9544AZQNR 是德州儀器（TI）推出的4通道I2C匯流排多路復用器，帶中斷邏輯，專為多主機I2C系統中的電壓位準轉換和匯流排擴展設計。它允許通過I2C介面選擇最多四個子匯流排，使多個相同位址的設備能共存於同一匯流排。工作電壓範圍為1.65V至5.5V，適合低電壓應用。採用緊湊的20-BGA MICROSTAR JUNIOR（4x3）封裝，適用於空間受限的設計。

詳細技術參數

核心特性

• 4通道I2C匯流排多路復用器，帶中斷邏輯
• 支援1.8V、2.5V、3.3V和5V匯流排之間的電壓位準轉換
• 低待機電流：<1 µA
• 高電平有效復位輸入
• 上電無突波
• 支援熱插入
• 相容I2C匯流排標準模式和快速模式

典型應用場景

• 5G基站：多路復用電源管理和溫度監控的I2C感測器
• 汽車儀表板：連接多個顯示控制器和觸控IC
• 工業自動化：在PLC模組中管理多個I2C ADC和DAC
• 消費電子：智慧音箱中的多個音訊編解碼器和感測器
• 醫療設備：病人監護系統中的多個感測器集線器

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 PCA9544AZQNR 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]