PCF8574RGTR TI Remote 8-Bit I/O Expander | 16-VQFN (3x3) | I2C, 2.5-5.5V

Product Overview

The PCF8574RGTR from Texas Instruments is a remote 8-bit I/O expander for I2C-bus applications. It provides 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 an 8-bit quasi-bidirectional I/O port (P0–P7) with high-current drive capability (25 mA sink current per I/O). Three hardware address pins (A0, A1, A2) allow up to eight devices on the same bus, providing up to 64 additional I/Os. The PCF8574RGTR operates from 2.5 V to 5.5 V and is available in a compact 16-VQFN (3x3 mm) package, making it ideal for space-constrained applications.

Detailed Technical Specifications

Key Features

• 8-bit remote I/O expander for I2C-bus
• Quasi-bidirectional I/O pins with high sink current (25 mA)
• Three hardware address pins allow up to 8 devices on the bus
• Low standby current consumption (1 µA typical)
• Open-drain interrupt output (INT) for status change detection
• I2C-bus interface supports standard (100 kHz) and fast (400 kHz) modes
• Operating supply voltage range: 2.5 V to 5.5 V
• Available in small 16-VQFN (3x3 mm) package

Target Applications

• 5G base station control and monitoring (e.g., antenna tilt, power supply status)
• Automotive dashboard switch and LED control
• Industrial PLC I/O expansion
• Smart home lighting and sensor interfaces
• Medical equipment (e.g., patient monitoring system I/O)
• Consumer electronics (e.g., smart TV, set-top box GPIO expansion)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for PCF8574RGTR. 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

PCF8574RGTR 是德州儀器（TI）推出的一款用於 I2C 匯流排的遠端 8 位 I/O 擴展器。它通過兩線雙向 I2C 匯流排（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 8 位準雙向 I/O 埠（P0–P7），每個 I/O 具有高電流驅動能力（25 mA 灌電流）。三個硬體位址引腳（A0、A1、A2）允許同一匯流排上最多連接八個器件，提供最多 64 個額外 I/O。PCF8574RGTR 的工作電壓範圍為 2.5 V 至 5.5 V，採用緊湊的 16-VQFN（3x3 mm）封裝，非常適合空間受限的應用。

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，具有高灌電流能力（25 mA）
• 三個硬體位址引腳，允許匯流排上最多 8 個器件
• 低待機電流消耗（典型值 1 µA）
• 開漏中斷輸出（INT），用於狀態變化檢測
• I2C 匯流排介面支援標準（100 kHz）和快速（400 kHz）模式
• 工作電源電壓範圍：2.5 V 至 5.5 V
• 採用小型 16-VQFN（3x3 mm）封裝

典型應用場景

• 5G 基地台控制與監控（例如天線傾角、電源狀態）
• 汽車儀錶板開關和 LED 控制
• 工業 PLC I/O 擴展
• 智慧家居照明和感測器介面
• 醫療設備（例如病人監護系統 I/O）
• 消費電子（例如智慧電視、機上盒 GPIO 擴展）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 PCF8574RGTR 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。
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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。
• 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。
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• 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]