PCF8574PWR TI I2C I/O Expander | 20-TSSOP | 8-bit, 100kHz

Product Overview

The PCF8574PWR 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) with high-current drive capability (25 mA sink per I/O). Three hardware address pins (A0, A1, A2) allow up to eight devices on the same bus, giving a total of 64 I/O pins. The PCF8574PWR operates from 2.5 V to 5.5 V and is specified over the –40°C to +85°C temperature range. It is available in a 20-pin TSSOP package (PW).

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 eight devices on the bus
• Low standby current (1 μA typical)
• Open-drain active-low interrupt output (INT)
• Input latch function for capturing input changes
• Supports I2C standard mode (100 kHz)
• Operating supply voltage range: 2.5 V to 5.5 V
• –40°C to +85°C operating temperature range
• Available in 20-pin TSSOP package (RoHS compliant)

Target Applications

• 5G base station control and monitoring (e.g., antenna tilt, power management)
• Automotive dashboard and infotainment systems (e.g., button matrix, LED control)
• Industrial automation (e.g., PLC I/O expansion, sensor interfaces)
• Smart home devices (e.g., smart thermostat, lighting control panels)
• Medical equipment (e.g., patient monitoring, diagnostic devices)
• 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 PCF8574PWR. 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

PCF8574PWR 是德州儀器 (TI) 推出的遠端 8 位 I/O 擴展器，適用於 I2C 匯流排應用。它通過 I2C 介面（串列時鐘 SCL 和串列數據 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），具有高電流驅動能力（每個 I/O 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，總共提供 64 個 I/O 引腳。PCF8574PWR 的工作電壓範圍為 2.5 V 至 5.5 V，溫度範圍為 –40°C 至 +85°C。它採用 20 引腳 TSSOP 封裝（PW）。

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，允許同一匯流排上最多八個器件
• 低待機電流（典型值 1 μA）
• 開漏極低電平有效中斷輸出（INT）
• 輸入鎖存功能，用於捕獲輸入變化
• 支援 I2C 標準模式（100 kHz）
• 工作電源電壓範圍：2.5 V 至 5.5 V
• –40°C 至 +85°C 工作溫度範圍
• 採用 20 引腳 TSSOP 封裝（符合 RoHS 標準）

典型應用場景

• 5G 基地台控制與監控（例如天線傾角、電源管理）
• 汽車儀表板與資訊娛樂系統（例如按鍵矩陣、LED 控制）
• 工業自動化（例如 PLC I/O 擴展、感測器介面）
• 智慧家居設備（例如智慧恆溫器、照明控制面板）
• 醫療設備（例如病人監護、診斷設備）
• 消費電子（例如遊戲機、機上盒）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 PCF8574PWR 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。
• 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]