PCA9543ADR TI I2C Multiplexer | 14-SOIC | 2-Channel, 2.3V-5.5V

Product Overview

The PCA9543ADR from Texas Instruments is a 2-channel I2C-bus multiplexer with reset functionality, designed for voltage level translation and bus isolation. It allows multiple I2C devices with the same address to be connected to a single bus by selectively enabling one channel at a time. Operating from 2.3V to 5.5V, it is ideal for mixed-voltage systems. The device features active-low reset input, power-up with all channels deselected, and low standby current. Packaged in a 14-pin SOIC, it is suitable for space-constrained applications.

Detailed Technical Specifications

Key Features

• 2-channel I2C-bus multiplexer with reset
• Allows voltage level translation between 1.8V, 2.5V, 3.3V, and 5V buses
• Active-low reset input resets the I2C bus and deselects all channels
• Power-up with all channels deselected
• Low standby current (1 µA max)
• Supports hot insertion
• 5 V tolerant I2C and reset pins
• ESD protection exceeds 2000 V HBM

Target Applications

• 5G base stations: Multiplexing I2C sensors for power management and temperature monitoring
• Automotive dashboard: Connecting multiple display controllers and touch ICs
• Industrial control: Isolating I2C buses for different modules
• Server motherboards: Managing I2C devices like EEPROMs and ADCs
• Consumer electronics: Smart speakers, set-top boxes

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for PCA9543ADR. 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.

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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

PCA9543ADR 是德州儀器 (TI) 推出的 2 通道 I²C 匯流排多工器，具備復位功能，專為電壓位準轉換和匯流排隔離設計。它允許具有相同位址的多個 I²C 設備通過選擇性啟用一個通道連接到單一匯流排。工作電壓範圍為 2.3V 至 5.5V，適用於混合電壓系統。該器件具有低電平有效復位輸入、上電時所有通道取消選中以及低待機電流。採用 14 引腳 SOIC 封裝，適合空間受限的應用。

詳細技術參數

核心特性

• 2 通道 I²C 匯流排多工器，帶復位功能
• 支援 1.8V、2.5V、3.3V 和 5V 匯流排之間的電壓位準轉換
• 低電平有效復位輸入，可復位 I²C 匯流排並取消所有通道選中
• 上電時所有通道取消選中
• 低待機電流 (最大值 1 µA)
• 支援熱插入
• I²C 和復位引腳耐 5V 電壓
• ESD 保護超過 2000 V HBM

典型應用場景

• 5G 基站：多工管理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
• 工業控制：隔離不同模組的 I²C 匯流排
• 伺服器主機板：管理 EEPROM 和 ADC 等 I²C 設備
• 消費電子：智慧音箱、機上盒

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 PCA9543ADR 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。
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HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
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