TCA9534ADWT TI I2C I/O Expander | 16-SOIC | 8-bit, 2.3V-5.5V

Product Overview

The TCA9534ADWT 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 (serial clock (SCL) and serial data (SDA)). The device features an 8-bit quasi-bidirectional I/O port (P0–P7) with high-current drive capability (25 mA sink, 10 mA source). Three address pins (A0, A1, A2) allow up to eight devices on the same bus, enabling up to 64 I/Os. The TCA9534ADWT comes in a 16-pin SOIC package (DWT suffix) and is fully specified for operation from -40°C to +85°C.

Detailed Technical Specifications

Key Features

• 8-bit I/O expander with I²C interface
• Low standby current consumption (1 µA typical)
• Open-drain active-low interrupt output (INT)
• Input and output configuration registers
• Polarity inversion register
• Internal power-on reset
• No glitch on power-up
• SCL/SDA input filters provide noise immunity
• Compatible with SMBus

Target Applications

The TCA9534ADWT is ideal for applications requiring additional I/O ports in space-constrained designs. Specific examples include:

• 5G base stations: monitoring and control of power amplifiers, fan speed, and status LEDs
• Automotive dashboard: reading button inputs, controlling indicator lights, and managing haptic feedback
• Industrial PLCs: expanding digital I/O for sensor and actuator interfaces
• Smart home hubs: managing GPIO for sensors, relays, and display backlight
• Medical devices: controlling pumps, valves, and user interface buttons

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for TCA9534ADWT. 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

TCA9534ADWT 是德州儀器 (TI) 推出的低電壓 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（串行時鐘 SCL 和串行數據 SDA）為大多數微控制器系列提供通用遠程 I/O 擴展。該器件具有一個 8 位準雙向 I/O 端口（P0–P7），具有高電流驅動能力（25 mA 灌電流，10 mA 拉電流）。三個地址引腳（A0、A1、A2）允許同一總線上最多八個器件，從而實現最多 64 個 I/O。TCA9534ADWT 採用 16 引腳 SOIC 封裝（DWT 後綴），工作溫度範圍為 -40°C 至 +85°C。

詳細技術參數

核心特性

• 8 位 I/O 擴展器，帶 I²C 接口
• 低待機電流消耗（典型值 1 µA）
• 開漏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
• SCL/SDA 輸入濾波器提供噪聲抑制
• 兼容 SMBus

典型應用場景

TCA9534ADWT 非常適合在空間受限的設計中需要額外 I/O 端口的應用。具體示例包括：

• 5G 基站：監控和控制功率放大器、風扇轉速和狀態 LED
• 汽車儀表板：讀取按鈕輸入、控制指示燈和管理觸覺反饋
• 工業 PLC：擴展數字 I/O 用於傳感器和執行器接口
• 智能家居中樞：管理 GPIO 用於傳感器、繼電器和顯示背光
• 醫療設備：控制泵、閥門和用戶界面按鈕

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 TCA9534ADWT 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。
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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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