TCA9554DBQR TI I2C I/O Expander | 16-SSOP | 8-bit, 1.65-5.5V

Product Overview

The TCA9554DBQR is a low-voltage 8-bit I/O expander from Texas Instruments designed for I2C-bus (SMBus) applications. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface, allowing easy addition of digital I/O lines. The device features an 8-bit configuration register, input/output register, and polarity inversion register. It operates from 1.65V to 5.5V, making it suitable for a wide range of low-power applications. The TCA9554DBQR is available in a compact 16-SSOP package, ideal for space-constrained designs.

Detailed Technical Specifications

Key Features

• 8-bit bidirectional I/O expander
• I2C interface with three address pins (up to 8 devices)
• Low standby current consumption
• Open-drain active-low interrupt output
• Polarity inversion register
• Power-on reset with all channels set as inputs
• No glitch on power-up
• Compatible with SMBus

Target Applications

• 5G base station control and monitoring
• Automotive dashboard and infotainment systems
• Industrial PLC I/O expansion
• Server and networking equipment
• Portable electronics and IoT devices
• LED control and button scanning

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for TCA9554DBQR. 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

TCA9554DBQR 是德州儀器（TI）推出的一款低電壓 8 位 I/O 擴展器，專為 I2C 匯流排（SMBus）應用設計。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，方便添加數字 I/O 線。該器件包含 8 位配置寄存器、輸入/輸出寄存器和極性反轉寄存器。工作電壓範圍為 1.65V 至 5.5V，適用於各種低功耗應用。TCA9554DBQR 採用緊湊的 16-SSOP 封裝，適合空間受限的設計。

詳細技術參數

核心特性

• 8 位雙向 I/O 擴展器
• I2C 接口，三個地址引腳（最多 8 個器件）
• 低待機電流消耗
• 開漏極低電平有效中斷輸出
• 極性反轉寄存器
• 上電復位，所有通道設為輸入
• 上電無毛刺
• 兼容 SMBus

典型應用場景

• 5G 基站控制與監控
• 汽車儀表盤與信息娛樂系統
• 工業 PLC I/O 擴展
• 服務器與網絡設備
• 便攜式電子產品與物聯網設備
• LED 控制與按鍵掃描

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 TCA9554DBQR 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]