TCA9535MRGER TI I2C GPIO Expander | 24-VQFN (4x4) | 16-bit, 2.3-5.5V

Product Overview

The TCA9535MRGER 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 microcontroller's interrupt input, alerting the host that an input state has changed. The TCA9535MRGER is available in a compact 24-pin VQFN (4x4 mm) package, making it ideal for space-constrained applications.

Detailed Technical Specifications

Key Features

• 16-bit bidirectional I/O expander
• I2C interface with up to 400 kHz clock frequency
• Three hardware address pins allow up to 8 devices on the same bus
• Open-drain active-low interrupt output
• Low standby current consumption (1 µA typical)
• Input/output configuration register
• Polarity inversion register
• Internal power-on reset
• No glitch on power-up
• SCL/SDA input filters provide noise immunity
• Supports hot insertion
• RoHS compliant and halogen-free

Target Applications

• 5G base stations: monitoring and control of power modules, fans, and status LEDs
• Automotive dashboard: reading switch inputs (buttons, knobs) and controlling indicator lights
• Industrial PLCs: expanding digital I/O for sensor and actuator interfaces
• Smart home hubs: managing GPIO for sensors, relays, and display backlight
• Medical devices: patient monitoring systems requiring additional I/O for alarms and controls
• Networking equipment: routers and switches for port status indication and reset control

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for TCA9535MRGER. Our core advantages include:

• 24/7 Global Customer Support: Professional team providing instant quotes and technical support worldwide.
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• 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

TCA9535MRGER 是德州儀器 (TI) 推出的一款 16 位 I2C 匯流排和 SMBus I/O 擴展器，支援 2.3 V 至 5.5 V 的 VCC 工作電壓。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。該器件具有中斷輸出 (INT)，可連接到微控制器的中斷輸入，在輸入狀態發生變化時通知主機。TCA9535MRGER 採用緊湊的 24 引腳 VQFN (4x4 mm) 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 擴展器
• I2C 介面，時鐘頻率高達 400 kHz
• 三個硬體位址引腳，同一匯流排上最多支援 8 個器件
• 開漏低電平有效中斷輸出
• 低待機電流消耗（典型值 1 µA）
• 輸入/輸出配置暫存器
• 極性反轉暫存器
• 內部上電復位
• 上電無毛刺
• SCL/SDA 輸入濾波器提供抗干擾能力
• 支援熱插入
• 符合 RoHS 標準且無滷素

典型應用場景

• 5G 基站：監控和控制電源模組、風扇及狀態指示燈
• 汽車儀表板：讀取開關輸入（按鈕、旋鈕）並控制指示燈
• 工業 PLC：擴展數位 I/O 用於感測器和執行器介面
• 智慧家庭中樞：管理 GPIO 用於感測器、繼電器和顯示背光
• 醫療設備：病人監護系統需要額外 I/O 用於警報和控制
• 網路設備：路由器和交換機的連接埠狀態指示和重置控制

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