TCA9539PWR TI I2C I/O Expander | 24-TSSOP | 16-bit, 2.3V-5.5V

Product Overview

The TCA9539PWR from Texas Instruments is a 16-bit I2C-bus 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 (serial clock (SCL) and serial data (SDA)). The device features an interrupt output (INT) that can be connected to the interrupt logic of the microcontroller, and the INT output is activated when any input state differs from its corresponding input port register state. The TCA9539PWR is available in a 24-pin TSSOP package, offering a compact solution for applications requiring additional I/O lines.

Detailed Technical Specifications

Key Features

• 16-bit bidirectional I/O expander with I2C interface
• Operating supply voltage range: 2.3 V to 5.5 V
• Low standby current consumption (1 µA typical)
• Interrupt output for event-driven communication
• Configurable I2C address via three address pins (up to 8 devices on same bus)
• Open-drain active-low interrupt output
• Input/output polarity inversion register
• Internal power-on reset
• No glitch on power-up
• Supports hot insertion
• Package: 24-TSSOP (Thin Shrink Small Outline Package)

Target Applications

• 5G base station: Control and status monitoring of power amplifiers, fans, and alarms
• Automotive dashboard: Reading switch inputs (buttons, knobs) and controlling indicator LEDs
• Industrial PLC: Expanding digital I/O for sensor and actuator interfaces
• Server and networking equipment: Monitoring system health (temperature, voltage) and controlling fans
• Consumer electronics: GPIO expansion for smart home devices, gaming consoles
• Medical devices: Patient monitoring systems requiring additional I/O for alarms and controls

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for TCA9539PWR. 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

TCA9539PWR 是德州儀器（TI）推出的一款 16 位 I2C 匯流排和 SMBus I/O 擴展器，可在 2.3 V 至 5.5 V 的 VCC 電壓範圍內工作。它通過 I2C 介面（串列時鐘 SCL 和串列資料 SDA）為大多數微控制器系列提供通用遠端 I/O 擴展。該器件具有一個中斷輸出（INT），可連接到微控制器的中斷邏輯，當任何輸入狀態與其對應的輸入埠暫存器狀態不同時，INT 輸出會被啟動。TCA9539PWR 採用 24 引腳 TSSOP 封裝，為需要額外 I/O 線的應用提供了緊湊的解決方案。

詳細技術參數

核心特性

• 16 位雙向 I/O 擴展器，帶 I2C 介面
• 工作電源電壓範圍：2.3 V 至 5.5 V
• 低待機電流消耗（典型值 1 µA）
• 中斷輸出，用於事件驅動通信
• 通過三個位址引腳可配置 I2C 位址（同一匯流排上最多 8 個設備）
• 開漏低電平有效中斷輸出
• 輸入/輸出極性反轉暫存器
• 內部上電復位
• 上電無毛刺
• 支援熱插入
• 封裝：24-TSSOP（薄型縮小外形封裝）

典型應用場景

• 5G 基站：功率放大器、風扇和警報的控制與狀態監控
• 汽車儀錶板：讀取開關輸入（按鈕、旋鈕）並控制指示燈 LED
• 工業 PLC：擴展感測器和執行器介面的數位 I/O
• 伺服器和網路設備：監控系統健康狀況（溫度、電壓）並控制風扇
• 消費電子：智慧家居設備、遊戲機的 GPIO 擴展
• 醫療設備：需要額外 I/O 進行警報和控制的病人監護系統

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 TCA9539PWR 提供全面的供應鏈與批發解決方案。 我們的核心優勢包括：

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HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
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