TCA9554APWR TI I2C I/O Expander | 16-TSSOP | 8-bit, 400kHz

Product Overview

The TCA9554APWR from Texas Instruments is a low-voltage 8-bit I²C and SMBus I/O expander designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I²C interface. The device features an 8-bit configuration register, input register, and output register, allowing flexible control of I/O pins. With three address pins, up to eight devices can be connected on the same bus, supporting up to 64 I/Os. The TCA9554APWR is available in a compact 16-TSSOP package, making it ideal for space-constrained applications.

Detailed Technical Specifications

Key Features

• 8-bit I/O expander for I²C bus (SDA, SCL)
• Three hardware address pins allow up to eight devices on the same bus
• Low standby current consumption
• Open-drain active-low interrupt output (INT)
• Input and output configuration registers
• Polarity inversion register
• Internal power-on reset
• No glitch on power-up
• Supports hot insertion
• Low operating voltage range: 2.3 V to 5.5 V

Target Applications

• 5G base station: Monitoring and control of power modules, fan speed, 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 devices: GPIO expansion for touch panels and sensor hubs
• Medical equipment: Controlling pumps, valves, and display backlight
• Server/cloud computing: Managing system health indicators and reset functions

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for TCA9554APWR. 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

TCA9554APWR 是德州儀器 (TI) 推出的一款低電壓 8 位 I²C 和 SMBus I/O 擴展器，工作電壓範圍為 2.3 V 至 5.5 V。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。該器件包含 8 位配置寄存器、輸入寄存器和輸出寄存器，可靈活控制 I/O 引腳。通過三個地址引腳，最多可在同一總線上連接八個器件，支持多達 64 個 I/O。TCA9554APWR 採用緊湊的 16-TSSOP 封裝，非常適合空間受限的應用。

詳細技術參數

核心特性

• 8 位 I²C 總線 I/O 擴展器 (SDA, SCL)
• 三個硬件地址引腳，同一總線上最多可連接八個器件
• 低待機電流消耗
• 開漏極低電平有效中斷輸出 (INT)
• 輸入和輸出配置寄存器
• 極性反轉寄存器
• 內部上電復位
• 上電無毛刺
• 支持熱插入
• 低工作電壓範圍：2.3 V 至 5.5 V

典型應用場景

• 5G 基站：監控和控制電源模塊、風扇轉速及狀態指示燈
• 汽車儀表盤：讀取開關輸入並控制指示燈
• 工業 PLC：擴展數字 I/O 用於傳感器和執行器接口
• 智能家居設備：觸摸面板和傳感器集線器的 GPIO 擴展
• 醫療設備：控制泵、閥門和顯示背光
• 服務器/雲計算：管理系統健康指示器和復位功能

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 TCA9554APWR 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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• 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

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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
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