PCF8574ARGYR TI I2C I/O Expander | 20-VQFN (3.5x4.5) | 8-bit, 2.3-5.5V

Product Overview

The PCF8574ARGYR 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 I2C interface (serial clock SCL and serial data SDA). The device features an 8-bit quasi-bidirectional I/O port (P0–P7) including latched outputs with high-current drive capability for directly driving LEDs. Each quasi-bidirectional I/O can be used as an input or output without the use of a data-direction control signal. At power-on, all I/Os default to inputs. The PCF8574ARGYR operates from 2.3 V to 5.5 V and is available in a compact 20-pin VQFN (3.5 mm × 4.5 mm) package, making it ideal for space-constrained applications.

Detailed Technical Specifications

Key Features

• 8-bit I2C-bus I/O expander with 3 address pins (up to 8 devices on bus)
• Quasi-bidirectional I/O pins (no direction control needed)
• High-current drive capability (25 mA sink, 10 mA source)
• Low standby current consumption (10 μA max)
• Open-drain active-low interrupt output (INT)
• I2C bus interface supports standard and fast mode (up to 400 kHz)
• Power-on reset: all I/Os set to inputs
• 5 V tolerant I/O pins
• Small VQFN package saves board space

Target Applications

• 5G base station control boards: for monitoring and controlling status LEDs, fans, and reset signals
• Automotive dashboard clusters: for reading switch inputs and driving indicator LEDs
• Industrial PLC I/O modules: for expanding digital I/O over I2C
• Smart home hubs: for interfacing with sensors and actuators
• Medical devices: for controlling user interface buttons and displays

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for PCF8574ARGYR. 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

PCF8574ARGYR 是德州儀器 (TI) 推出的遠程 8 位 I/O 擴展器，適用於 I2C 總線應用。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），包括帶高電流驅動能力的鎖存輸出，可直接驅動 LED。每個準雙向 I/O 可用作輸入或輸出，無需使用數據方向控制信號。上電時，所有 I/O 默認為輸入。PCF8574ARGYR 的工作電壓範圍為 2.3 V 至 5.5 V，採用緊湊的 20 引腳 VQFN（3.5 mm × 4.5 mm）封裝，非常適合空間受限的應用。

詳細技術參數

核心特性

• 8 位 I2C 總線 I/O 擴展器，帶 3 個地址引腳（總線上最多 8 個器件）
• 準雙向 I/O 引腳（無需方向控制）
• 高電流驅動能力（25 mA 灌電流，10 mA 拉電流）
• 低待機電流消耗（最大 10 μA）
• 開漏低電平有效中斷輸出（INT）
• I2C 總線接口支持標準和快速模式（最高 400 kHz）
• 上電復位：所有 I/O 設置為輸入
• 5 V 耐壓 I/O 引腳
• 小型 VQFN 封裝節省電路板空間

典型應用場景

• 5G 基站控制板：用於監控和控制狀態 LED、風扇和復位信號
• 汽車儀表盤：用於讀取開關輸入和驅動指示燈 LED
• 工業 PLC I/O 模塊：用於通過 I2C 擴展數字 I/O
• 智能家居中樞：用於與傳感器和執行器接口
• 醫療設備：用於控制用戶界面按鈕和顯示器

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 PCF8574ARGYR 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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• 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。

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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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