PCA9535PW TI I2C I/O Expander | 24-TSSOP | 16-bit, 2.3V-5.5V

Product Overview

The PCA9535PW 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 (SCL) and serial data (SDA)). The device features an interrupt output (INT) that is activated when any input state differs from its corresponding input port register state, which is used to indicate to the system master that an input state has changed. The PCA9535PW has three address pins (A0, A1, A2) allowing up to eight devices on the same bus, providing up to 128 I/O pins. It is available in a 24-pin TSSOP package.

Detailed Technical Specifications

Key Features

• 16-bit bidirectional I/O expander
• I²C bus interface (SDA, SCL) with address selection
• Open-drain active-low interrupt output (INT)
• Three hardware address pins allow up to eight devices on the same bus
• Low standby current consumption
• Input/output configuration registers
• Polarity inversion register
• Internal power-on reset
• No glitch on power-up
• Supports hot insertion
• ESD protection exceeds JESD 22

Target Applications

• 5G base station: control and status monitoring of power amplifiers, fans, and sensors
• Automotive dashboard: reading switch inputs and controlling LEDs
• Industrial PLC: expanding digital I/O for sensor and actuator interfaces
• Server and networking equipment: managing reset signals, status LEDs, and fan tachometers
• Consumer electronics: keypad scanning and GPIO expansion in smart home hubs

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for PCA9535PW. 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

PCA9535PW 是德州儀器 (TI) 的一款 16 位 I²C 匯流排和 SMBus I/O 擴展器，工作電壓範圍為 2.3 V 至 5.5 V。它通過 I²C 介面（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。該器件具有中斷輸出 (INT)，當任何輸入狀態與其對應的輸入埠暫存器狀態不同時，中斷輸出被啟動，用於向系統主機指示輸入狀態已更改。PCA9535PW 具有三個位址引腳 (A0, A1, A2)，允許同一匯流排上最多八個器件，提供最多 128 個 I/O 引腳。它採用 24 引腳 TSSOP 封裝。

詳細技術參數

核心特性

• 16 位雙向 I/O 擴展器
• I²C 匯流排介面 (SDA, SCL)，支援位址選擇
• 開漏低電平有效中斷輸出 (INT)
• 三個硬體位址引腳，同一匯流排上最多八個器件
• 低待機電流消耗
• 輸入/輸出配置暫存器
• 極性反轉暫存器
• 內部上電復位
• 上電無突波
• 支援熱插入
• ESD 保護超過 JESD 22 標準

典型應用場景

• 5G 基站：功率放大器、風扇和感測器的控制與狀態監控
• 汽車儀錶板：讀取開關輸入和控制 LED
• 工業 PLC：擴展感測器和執行器介面的數位 I/O
• 伺服器和網路設備：管理重置訊號、狀態 LED 和風扇轉速計
• 消費電子：智慧家庭中樞的鍵盤掃描和 GPIO 擴展

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 PCA9535PW 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
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