PCF8575DWR TI I2C I/O Expander | 24-SOIC | 16-bit, 2.3V-5.5V

Product Overview

The PCF8575DWR from Texas Instruments is a 16-bit I/O expander for I2C-bus applications, designed to provide general-purpose remote I/O expansion for most microcontroller families via the two-line bidirectional I2C bus (serial clock (SCL) and serial data (SDA)). The device features a 16-bit quasi-bidirectional input/output (I/O) port, including latched outputs with high-current drive capability for directly driving LEDs. The PCF8575DWR operates from a supply voltage range of 2.3 V to 5.5 V and is available in a 24-pin SOIC package. It supports I2C bus speeds up to 400 kHz and includes an interrupt output (INT) that can be connected to the microcontroller's interrupt logic. Three hardware address pins (A0, A1, A2) allow up to eight devices on the same bus, providing a total of 128 I/O pins.

Detailed Technical Specifications

Key Features

• 16-bit remote I/O expander for I2C-bus
• Quasi-bidirectional I/O pins with high-current drive
• Low standby current consumption
• Open-drain interrupt output
• Three hardware address pins allow up to eight devices
• Inputs accept voltages up to 5.5 V regardless of Vcc
• No external pull-up resistors required for I/O pins
• ESD protection exceeds JESD 22

Target Applications

The PCF8575DWR is ideal for applications requiring additional I/O pins, such as:

• 5G base station control and monitoring (e.g., fan control, status LEDs)
• Automotive dashboard displays (e.g., button matrix, indicator lights)
• Industrial PLCs (e.g., sensor inputs, relay control)
• Home automation systems (e.g., smart switches, dimmers)
• Medical devices (e.g., patient monitoring panels)
• Consumer electronics (e.g., gaming consoles, set-top boxes)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for PCF8575DWR. 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

PCF8575DWR 是德州儀器（TI）推出的一款 16 位 I²C 匯流排 I/O 擴展器，通過兩線雙向 I²C 匯流排（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 16 位準雙向輸入/輸出（I/O）端口，包括具有高電流驅動能力的鎖存輸出，可直接驅動 LED。PCF8575DWR 的工作電源電壓範圍為 2.3 V 至 5.5 V，採用 24 引腳 SOIC 封裝。它支持高達 400 kHz 的 I²C 匯流排速度，並包含一個中斷輸出（INT），可連接到微控制器的中斷邏輯。三個硬體地址引腳（A0、A1、A2）允許同一匯流排上最多連接八個器件，總共提供 128 個 I/O 引腳。

詳細技術參數

核心特性

• 16 位遠程 I/O 擴展器，用於 I²C 匯流排
• 準雙向 I/O 引腳，具有高電流驅動能力
• 低待機電流消耗
• 開漏中斷輸出
• 三個硬體地址引腳，最多支持八個器件
• 輸入可接受高達 5.5 V 的電壓，與 Vcc 無關
• I/O 引腳無需外部上拉電阻
• ESD 保護超過 JESD 22 標準

典型應用場景

PCF8575DWR 適用於需要額外 I/O 引腳的應用，例如：

• 5G 基站控制與監控（如風扇控制、狀態指示燈）
• 汽車儀表板顯示（如按鍵矩陣、指示燈）
• 工業 PLC（如傳感器輸入、繼電器控制）
• 家庭自動化系統（如智能開關、調光器）
• 醫療設備（如病人監護面板）
• 消費電子產品（如遊戲機、機頂盒）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 PCF8575DWR 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]