PCF8574ADW TI I2C I/O Expander | 16-SOIC | 8-bit, 2.5-5.5V

Product Overview

The PCF8574ADW from Texas Instruments is a remote 8-bit I/O expander for I2C-bus. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface. The device features an 8-bit quasi-bidirectional I/O port, with latched outputs with high-current drive capability for directly driving LEDs. It also includes an interrupt output that can be connected to the microcontroller's interrupt input, allowing the microcontroller to be notified of input changes without polling. The PCF8574ADW operates from 2.5V to 5.5V and is available in a 16-SOIC package.

Detailed Technical Specifications

Key Features

• 8-bit remote I/O expander for I2C-bus
• Quasi-bidirectional I/O pins
• High-current drive capability (25 mA per pin)
• Interrupt output for input change detection
• Three hardware address pins allow up to 8 devices on the same bus
• Low standby current consumption
• Operating voltage range: 2.5V to 5.5V
• Available in 16-SOIC package

Target Applications

• 5G base station control and monitoring (e.g., antenna tilt, power supply status)
• Automotive dashboard switches and LED indicators
• Industrial PLC I/O expansion
• Home automation (smart lighting, sensor inputs)
• Server and networking equipment (status LEDs, reset switches)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for PCF8574ADW. 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

PCF8574ADW 是德州儀器（TI）推出的遠端8位I/O擴展器，用於I2C匯流排。它通過I2C介面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8位準雙向I/O埠，帶鎖存輸出，具有高電流驅動能力，可直接驅動LED。它還包括一個中斷輸出，可連接到微控制器的中斷輸入，使微控制器無需輪詢即可獲知輸入變化。PCF8574ADW 的工作電壓範圍為2.5V至5.5V，採用16-SOIC封裝。

詳細技術參數

核心特性

• 用於I2C匯流排的8位遠端I/O擴展器
• 準雙向I/O引腳
• 高電流驅動能力（每引腳25 mA）
• 中斷輸出，用於檢測輸入變化
• 三個硬體位址引腳，同一匯流排上最多支援8個器件
• 低待機電流消耗
• 工作電壓範圍：2.5V至5.5V
• 採用16-SOIC封裝

典型應用場景

• 5G基站控制與監控（例如天線傾角、電源狀態）
• 汽車儀錶板開關和LED指示燈
• 工業PLC I/O擴展
• 家庭自動化（智慧照明、感測器輸入）
• 伺服器和網路設備（狀態LED、重置開關）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 PCF8574ADW 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]