TCA9555RTWR TI I2C I/O Expander | 24-WQFN (4x4) | 16-bit, 2.3V-5.5V

Product Overview

The TCA9555RTWR from Texas Instruments is a 16-bit I2C-bus and SMBus I/O expander with interrupt output and configuration registers. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface. The device features a 16-bit bidirectional I/O port (P07-P00, P17-P10) that can be configured as inputs or outputs. The TCA9555RTWR operates from a supply voltage range of 2.3V to 5.5V and supports I2C clock frequencies up to 400 kHz. It is available in a compact 24-WQFN (4x4) package, making it ideal for space-constrained applications.

Detailed Technical Specifications

Key Features

• 16-bit bidirectional I/O port with I2C interface
• Three hardware address pins allow up to 8 devices on the same bus
• Open-drain active-low interrupt output
• Input/output polarity inversion register
• Low standby current consumption
• Power-on reset with all channels configured as inputs
• No glitch on power-up
• Supports hot insertion
• SCL/SDA input filters provide noise suppression

Target Applications

• 5G base station: monitoring and controlling power amplifiers, fans, and status LEDs
• Automotive dashboard: reading switch inputs and controlling indicator lights
• Industrial PLC: expanding digital I/O for sensor and actuator interfaces
• Smart home hub: managing GPIO for sensors, relays, and display modules
• Server motherboard: controlling fan speed, power sequencing, and fault detection

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for TCA9555RTWR. 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

TCA9555RTWR 是德州儀器（TI）推出的16位I2C總線和SMBus I/O擴展器，具有中斷輸出和配置寄存器。它通過I2C接口為大多數微控制器系列提供通用遠程I/O擴展。該器件具有一個16位雙向I/O端口（P07-P00, P17-P10），可配置為輸入或輸出。TCA9555RTWR 的工作電源電壓範圍為2.3V至5.5V，支持高達400 kHz的I2C時鐘頻率。它採用緊湊的24-WQFN（4x4）封裝，非常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端口，帶I2C接口
• 三個硬件地址引腳，同一總線上最多支持8個器件
• 開漏低電平有效中斷輸出
• 輸入/輸出極性反轉寄存器
• 低待機電流消耗
• 上電復位，所有通道配置為輸入
• 上電無毛刺
• 支持熱插入
• SCL/SDA輸入濾波器提供噪聲抑制

典型應用場景

• 5G基站：監控和控制功率放大器、風扇和狀態LED
• 汽車儀表板：讀取開關輸入和控制指示燈
• 工業PLC：擴展數字I/O，用於傳感器和執行器接口
• 智能家居網關：管理GPIO，用於傳感器、繼電器和顯示模塊
• 服務器主板：控制風扇速度、電源排序和故障檢測

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 TCA9555RTWR 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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• 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

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• 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。
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HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
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