TCA9555DBR TI I2C I/O Expander | 24-SSOP | 16-bit, 2.3V-5.5V

Product Overview

The TCA9555DBR is a 16-bit I2C I/O expander from Texas Instruments, designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C interface. It features a 16-bit bidirectional I/O port (two 8-bit ports) with interrupt output, and operates from 2.3V to 5.5V. The device is available in a compact 24-SSOP package, making it ideal for space-constrained applications.

Detailed Technical Specifications

Key Features

• 16-bit bidirectional I/O port (two 8-bit ports)
• I2C interface with up to 400 kHz clock frequency
• Three hardware address pins allow up to 8 devices on the same bus
• Interrupt output for pin change detection
• Low standby current consumption (1 µA typical)
• Input/output configuration registers
• Polarity inversion register
• Open-drain interrupt output
• 5V tolerant I/O pins

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 status monitoring
• Consumer electronics (e.g., smart home panels, gaming consoles)
• Medical devices (e.g., patient monitoring interfaces)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for TCA9555DBR. 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

TCA9555DBR 是德州儀器推出的16位 I2C I/O 擴展器，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。它具有16位雙向 I/O 端口（兩個8位端口）和中斷輸出，工作電壓範圍為2.3V至5.5V。該器件採用緊湊的24-SSOP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（兩個8位端口）
• I2C 接口，時鐘頻率高達400 kHz
• 三個硬件地址引腳，同一總線上最多支持8個器件
• 引腳變化檢測的中斷輸出
• 低待機電流（典型值1 µA）
• 輸入/輸出配置寄存器
• 極性反轉寄存器
• 開漏中斷輸出
• 5V 耐受 I/O 引腳

典型應用場景

• 5G 基站控制與監控（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
• 服務器和電信設備狀態監控
• 消費電子（例如智能家居面板、遊戲機）
• 醫療設備（例如病人監護接口）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 TCA9555DBR 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]