TCA9555DBT TI I2C I/O Expander | 24-SSOP | 16-bit, 2.3V-5.5V

Product Overview

The TCA9555DBT is a 16-bit I/O expander from Texas Instruments designed for I2C bus applications. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface (serial clock and serial data). The device features a 16-bit configuration register, input/output register, and polarity inversion register. The TCA9555DBT operates from a 2.3V to 5.5V supply and supports up to 400 kHz I2C clock frequency. It is available in a compact 24-SSOP package, making it suitable for space-constrained applications.

Detailed Technical Specifications

Key Features

• 16-bit bidirectional I/O ports
• I2C interface with three address pins (up to 8 devices on bus)
• Open-drain active-low interrupt output
• Polarity inversion register for each port
• Low standby current consumption
• Power-on reset with all registers set to default
• No glitch on power-up
• Compatible with most microcontrollers

Target Applications

• 5G base station control and monitoring
• Automotive dashboard and infotainment systems
• Industrial automation and PLC I/O expansion
• Server and networking equipment (e.g., fan control, status LEDs)
• Consumer electronics (e.g., smart home hubs, gaming consoles)
• Medical devices (e.g., patient monitoring systems)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for TCA9555DBT. 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

TCA9555DBT 是德州儀器 (TI) 推出的 16 位 I/O 擴展器，專為 I2C 總線應用設計。它通過 I2C 接口（串行時鐘和串行數據）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 16 位配置寄存器、輸入/輸出寄存器和極性反轉寄存器。TCA9555DBT 的工作電壓範圍為 2.3V 至 5.5V，支持高達 400 kHz 的 I2C 時鐘頻率，並採用緊湊的 24-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 端口
• I2C 接口，三個地址引腳（總線上最多 8 個器件）
• 開漏低電平有效中斷輸出
• 每個端口的極性反轉寄存器
• 低待機電流消耗
• 上電復位，所有寄存器恢復默認值
• 上電無毛刺
• 與大多數微控制器兼容

典型應用場景

• 5G 基站控制與監控
• 汽車儀表板與信息娛樂系統
• 工業自動化與 PLC I/O 擴展
• 服務器與網絡設備（例如風扇控制、狀態 LED）
• 消費電子（例如智能家居中樞、遊戲主機）
• 醫療設備（例如病人監護系統）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 TCA9555DBT 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]