PCA9555PWR TI I2C I/O Expander | 24-TSSOP | 16-bit, 400kHz

Product Overview

The PCA9555PWR from Texas Instruments is a 16-bit I²C-bus and SMBus I/O expander designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I²C interface (serial clock and serial data). The device features an interrupt output (INT) that can be configured to generate an interrupt when an input state changes, eliminating the need to poll the device for input changes. The PCA9555PWR is available in a 24-pin TSSOP package, making it suitable for space-constrained applications.

Detailed Technical Specifications

Key Features

• 16-bit I²C-bus I/O expander with interrupt output
• Operating supply voltage range: 2.3 V to 5.5 V
• Low standby current consumption
• 5 V tolerant I/Os
• 400 kHz I²C bus frequency
• Polarity inversion register
• Internal power-on reset
• No glitch on power-up
• SCL/SDA input filters provide noise immunity
• Address by 3 hardware pins: up to 8 devices on one bus

Target Applications

• 5G base station control and monitoring (e.g., fan speed, LED indicators)
• Automotive dashboard control (e.g., button matrix, backlight LEDs)
• Industrial PLC I/O expansion
• Server and telecom equipment status monitoring
• Consumer electronics (e.g., smart home hubs, gaming consoles)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for PCA9555PWR. 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

PCA9555PWR 是德州儀器 (TI) 推出的 16 位 I²C 匯流排和 SMBus I/O 擴展器，支援 2.3 V 至 5.5 V 的 VCC 操作。它通過 I²C 介面（串列時鐘和串列資料）為大多數微控制器系列提供通用遠端 I/O 擴展。該器件具有中斷輸出 (INT)，可配置為在輸入狀態發生變化時產生中斷，從而無需輪詢器件以獲取輸入變化。PCA9555PWR 採用 24 引腳 TSSOP 封裝，適合空間受限的應用。

詳細技術參數

核心特性

• 16 位 I²C 匯流排 I/O 擴展器，帶中斷輸出
• 工作電源電壓範圍：2.3 V 至 5.5 V
• 低待機電流消耗
• 5 V 耐受 I/O
• 400 kHz I²C 匯流排頻率
• 極性反轉暫存器
• 內部上電復位
• 上電無突波
• SCL/SDA 輸入濾波器提供抗干擾能力
• 3 個硬體引腳定址：一條匯流排上最多 8 個器件

典型應用場景

• 5G 基地台控制與監控（例如風扇速度、LED 指示燈）
• 汽車儀表板控制（例如按鍵矩陣、背光 LED）
• 工業 PLC I/O 擴展
• 伺服器和電信設備狀態監控
• 消費電子（例如智慧家庭中樞、遊戲主機）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 PCA9555PWR 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]