{"product_id":"ti-pca9538dw-16-soic","title":"PCA9538DW TI I2C GPIO Expander | 16-SOIC | 8-bit, 2.3V-5.5V","description":"\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin-bottom:30px;\n            border-bottom:1px solid #f0f0f0; padding-bottom:20px;\"\u003e\n  \u003cspan style=\"background:#f3e5f5; color:#7b1fa2; padding:6px 14px; border-radius:4px;\n               font-size:12px; font-weight:bold; border:1px solid #e1bee7;\"\u003e🧪 SAMPLE SUPPORT\u003c\/span\u003e\n  \u003cspan style=\"background:#e8f5e9; color:#2e7d32; padding:6px 14px; border-radius:4px;\n               font-size:12px; font-weight:bold; border:1px solid #c8e6c9;\"\u003e✅ 100% Original \u0026amp; Traceable\u003c\/span\u003e\n  \u003cspan style=\"background:#e3f2fd; color:#1565c0; padding:6px 14px; border-radius:4px;\n               font-size:12px; font-weight:bold; border:1px solid #bbdefb;\"\u003e🚀 Inquiry Today, Ship Today\u003c\/span\u003e\n  \u003cspan style=\"background:#fff3e0; color:#ef6c00; padding:6px 14px; border-radius:4px;\n               font-size:12px; font-weight:bold; border:1px solid #ffe0b2;\"\u003e🛡️ Escrow.com Secured Payment\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe PCA9538DW from Texas Instruments is a low-voltage 8-bit I²C-bus 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 8-bit quasi-bidirectional I\/O port (P0–P7) with non-inverting data direction. At power-up, the I\/Os are configured as inputs with a weak pull-up to VCC. The PCA9538DW has three address pins (A0, A1, A2) allowing up to eight devices on the same bus. It is available in a 16-pin SOIC package (DW) and is specified over the –40°C to +85°C industrial temperature range.\u003c\/p\u003e\u003ch2\u003eDetailed Technical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage (VCC)\u003c\/td\u003e\n\u003ctd\u003e2.3 V to 5.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Pins\u003c\/td\u003e\n\u003ctd\u003e8 (quasi-bidirectional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI²C Bus Frequency\u003c\/td\u003e\n\u003ctd\u003eUp to 400 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby Current (max)\u003c\/td\u003e\n\u003ctd\u003e1 µA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e–40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003e16-SOIC (DW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eESD Protection\u003c\/td\u003e\n\u003ctd\u003eHBM 2000 V, CDM 1000 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current per I\/O\u003c\/td\u003e\n\u003ctd\u003e±10 mA (sink\/source)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage (VI)\u003c\/td\u003e\n\u003ctd\u003e–0.5 V to VCC + 0.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAddress Pins\u003c\/td\u003e\n\u003ctd\u003eA0, A1, A2 (up to 8 devices)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e8-bit I²C-bus I\/O expander with interrupt output (INT)\u003c\/li\u003e\n\u003cli\u003eOperating supply voltage range: 2.3 V to 5.5 V\u003c\/li\u003e\n\u003cli\u003eLow standby current consumption: 1 µA max\u003c\/li\u003e\n\u003cli\u003eI²C bus interface supports standard (100 kHz) and fast (400 kHz) modes\u003c\/li\u003e\n\u003cli\u003eThree hardware address pins allow up to eight devices on the same bus\u003c\/li\u003e\n\u003cli\u003eQuasi-bidirectional I\/Os with internal pull-up resistors (100 kΩ typical)\u003c\/li\u003e\n\u003cli\u003eOpen-drain active-low interrupt output (INT) for change-of-state detection\u003c\/li\u003e\n\u003cli\u003ePower-up with I\/Os configured as inputs\u003c\/li\u003e\n\u003cli\u003eNo glitch on power-up\u003c\/li\u003e\n\u003cli\u003eESD protection exceeds JESD 22 (2000-V HBM, 1000-V CDM)\u003c\/li\u003e\n\u003cli\u003eLatch-up performance exceeds 100 mA per JESD 78, Class II\u003c\/li\u003e\n\u003cli\u003ePackaged in 16-pin SOIC (DW) – RoHS compliant\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTarget Applications\u003c\/h2\u003e\u003cp\u003eThe PCA9538DW is ideal for applications requiring additional I\/O ports where space and power are limited. Specific examples include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e5G base stations: monitoring and control of power amplifiers, fan speed, and status LEDs\u003c\/li\u003e\n\u003cli\u003eAutomotive dashboard: reading button inputs, controlling backlight LEDs, and managing haptic feedback\u003c\/li\u003e\n\u003cli\u003eIndustrial PLCs: expanding digital I\/O for sensor inputs and actuator outputs\u003c\/li\u003e\n\u003cli\u003eServer motherboards: managing reset signals, power sequencing, and fault detection\u003c\/li\u003e\n\u003cli\u003eSmart home hubs: interfacing with touch sensors, relays, and indicator lights\u003c\/li\u003e\n\u003cli\u003eMedical devices: controlling pumps, valves, and user interface buttons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"border-bottom:2px solid #eee; padding-bottom:10px; margin-top:40px;\"\u003e\n  Global Supply Chain \u0026amp; Wholesale Solutions\n\u003c\/h2\u003e\n\u003cp\u003eAt Jasin Chip, we provide professional supply chain and wholesale solutions for\n\u003cstrong\u003ePCA9538DW\u003c\/strong\u003e. Our core advantages include:\u003c\/p\u003e\n\u003cul style=\"line-height:1.8; color:#444;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003e24\/7 Global Customer Support:\u003c\/strong\u003e Professional team providing instant\n      quotes and technical support worldwide.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIn-stock Inventory, Same-day Shipping:\u003c\/strong\u003e We maintain localized stock;\n      orders confirmed before 4 PM are shipped the same day.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHK-SZ Synergy, Flexible Settlement:\u003c\/strong\u003e Direct global shipping from\n      Shenzhen with support for HK bank transfers and multi-currency.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEscrow Secured Transactions:\u003c\/strong\u003e We support Escrow.com for secure\n      transactions, ensuring peace of mind for batch orders.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBOM Kitting \u0026amp; Sampling Services:\u003c\/strong\u003e Specialized sourcing for\n      testing samples and urgent shortage components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"border-bottom:2px solid #eee; padding-bottom:10px; margin-top:40px;\"\u003e\n  Quality Assurance \u0026amp; Compliance\n\u003c\/h2\u003e\n\u003cp\u003eJasin Chip guarantees that all delivered products are 100% original factory stock\nwith full quality assurance and traceability.\u003c\/p\u003e\n\u003cul style=\"line-height:1.8; color:#444;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100% Original \u0026amp; Authentic:\u003c\/strong\u003e All components are guaranteed to\n      be authentic with strict quality control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRoHS Compliant:\u003c\/strong\u003e All electronic components comply with international\n      environmental and safety standards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOriginal Factory Packaging:\u003c\/strong\u003e We maintain original factory packaging\n      and seals to ensure ESD protection and physical integrity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin:50px 0; border:0; border-top:2px dashed #eee;\"\u003e\n\u003ch2\u003e產品概述\u003c\/h2\u003e\u003cp\u003ePCA9538DW 是德州儀器（TI）推出的一款低電壓 8 位 I²C 匯流排 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。該器件具有一個 8 位準雙向 I\/O 埠（P0–P7），帶有同相資料方向。上電時，I\/O 配置為輸入，並帶有弱上拉至 VCC。PCA9538DW 具有三個位址引腳（A0、A1、A2），允許在同一匯流排上最多連接八個器件。它採用 16 引腳 SOIC 封裝（DW），並在 –40°C 至 +85°C 的工業溫度範圍內指定。\u003c\/p\u003e\u003ch2\u003e詳細技術參數\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e參數\u003c\/th\u003e\n\u003cth\u003e數值\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e電源電壓 (VCC)\u003c\/td\u003e\n\u003ctd\u003e2.3 V 至 5.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O 引腳\u003c\/td\u003e\n\u003ctd\u003e8 個（準雙向）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI²C 匯流排頻率\u003c\/td\u003e\n\u003ctd\u003e最高 400 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e待機電流（最大值）\u003c\/td\u003e\n\u003ctd\u003e1 µA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e工作溫度\u003c\/td\u003e\n\u003ctd\u003e–40°C 至 +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e封裝\u003c\/td\u003e\n\u003ctd\u003e16-SOIC (DW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eESD 保護\u003c\/td\u003e\n\u003ctd\u003eHBM 2000 V, CDM 1000 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e每個 I\/O 的輸出電流\u003c\/td\u003e\n\u003ctd\u003e±10 mA（灌\/拉）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e輸入電壓 (VI)\u003c\/td\u003e\n\u003ctd\u003e–0.5 V 至 VCC + 0.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e位址引腳\u003c\/td\u003e\n\u003ctd\u003eA0, A1, A2（最多 8 個器件）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003e核心特性\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e8 位 I²C 匯流排 I\/O 擴展器，帶中斷輸出 (INT)\u003c\/li\u003e\n\u003cli\u003e工作電源電壓範圍：2.3 V 至 5.5 V\u003c\/li\u003e\n\u003cli\u003e低待機電流消耗：最大 1 µA\u003c\/li\u003e\n\u003cli\u003eI²C 匯流排介面支援標準（100 kHz）和快速（400 kHz）模式\u003c\/li\u003e\n\u003cli\u003e三個硬體位址引腳允許同一匯流排上最多八個器件\u003c\/li\u003e\n\u003cli\u003e準雙向 I\/O，帶內部上拉電阻（典型值 100 kΩ）\u003c\/li\u003e\n\u003cli\u003e開漏低電平有效中斷輸出 (INT)，用於狀態變化檢測\u003c\/li\u003e\n\u003cli\u003e上電時 I\/O 配置為輸入\u003c\/li\u003e\n\u003cli\u003e上電無突波\u003c\/li\u003e\n\u003cli\u003eESD 保護超過 JESD 22（2000-V HBM，1000-V CDM）\u003c\/li\u003e\n\u003cli\u003e閂鎖性能超過 100 mA，符合 JESD 78 Class II\u003c\/li\u003e\n\u003cli\u003e採用 16 引腳 SOIC (DW) 封裝 – 符合 RoHS 標準\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e典型應用場景\u003c\/h2\u003e\u003cp\u003ePCA9538DW 非常適合需要額外 I\/O 埠且空間和功耗有限的應用。具體範例包括：\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e5G 基地台：監控和控制功率放大器、風扇轉速及狀態 LED\u003c\/li\u003e\n\u003cli\u003e汽車儀表板：讀取按鍵輸入、控制背光 LED 及管理觸覺回饋\u003c\/li\u003e\n\u003cli\u003e工業 PLC：擴展數位 I\/O 用於感測器輸入和致動器輸出\u003c\/li\u003e\n\u003cli\u003e伺服器主機板：管理重置訊號、電源排序及故障檢測\u003c\/li\u003e\n\u003cli\u003e智慧家庭中樞：與觸控感測器、繼電器和指示燈介接\u003c\/li\u003e\n\u003cli\u003e醫療設備：控制泵、閥門及使用者介面按鈕\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"border-bottom:2px solid #eee; padding-bottom:10px; margin-top:40px;\"\u003e\n  環球供應鏈與批發合作夥伴方案\n\u003c\/h2\u003e\n\u003cp\u003e在 Jasin Chip，我們為 \u003cstrong\u003ePCA9538DW\u003c\/strong\u003e 提供全面的供應鏈與批發解決方案。\n我們的核心優勢包括：\u003c\/p\u003e\n\u003cul style=\"line-height:1.8; color:#444;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003e全天候環球客戶支援：\u003c\/strong\u003e專業團隊為您提供即時報價及技術支援，無需漫長等待。\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e現貨庫存，即日發貨：\u003c\/strong\u003e確保現貨充足。下午 4 點前確認訂單，即可安排當天寄出。\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e深港聯動，結算靈活：\u003c\/strong\u003e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。\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEscrow 擔保交易：\u003c\/strong\u003e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。\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBOM 配單與樣板服務：\u003c\/strong\u003e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。\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"border-bottom:2px solid #eee; padding-bottom:10px; margin-top:40px;\"\u003e\n  品質保證與合規\n\u003c\/h2\u003e\n\u003cp\u003eJasin 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。\u003c\/p\u003e\n\u003cul style=\"line-height:1.8; color:#444;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100% 原廠正貨：\u003c\/strong\u003e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。\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e符合 RoHS 認證：\u003c\/strong\u003e所有電子元器件均符合國際環保標準及相關安全認證。\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e原廠封裝保護：\u003c\/strong\u003e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。\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size:14px; color:#666;\"\u003e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。\u003c\/p\u003e\n\n\u003cdiv style=\"margin:25px 0; padding:15px; border:1px solid #eee;\n            border-left:5px solid #2c3e50; background-color:#fcfcfc;\"\u003e\n  \u003cstrong style=\"font-size:16px; color:#2c3e50;\"\u003e🔥 熱門型號推薦 \/ Hot Related Models:\u003c\/strong\u003e\u003cbr\u003e\n  \u003cp style=\"margin-top:10px; color:#666; font-size:14px; line-height:1.8; word-break:break-all;\"\u003e\n    TL16C552AFNR | LM393PS | UCC3750DWTR | TLC6989DYYR | DS90CF386SLC\/NOPB | 32P4918A-CGF\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#2c3e50; color:white; padding:35px; text-align:center; border-radius:8px; margin:40px 0;\"\u003e\n  \u003ch3 style=\"margin:0; color:white; font-size:22px;\"\u003e獲取報價或技術手冊 \/ Need Batch Quote or Datasheet?\u003c\/h3\u003e\n  \u003cp style=\"margin:15px 0 25px 0; font-size:15px; color:#bdc3c7;\"\u003e\n    Our team provides competitive wholesale pricing for \u003cstrong\u003ePCA9538DW\u003c\/strong\u003e.\n  \u003c\/p\u003e\n  \u003cdiv style=\"display:flex; justify-content:center; gap:15px;\"\u003e\n    \u003ca href=\"https:\/\/wa.me\/85252099691\" target=\"_blank\" rel=\"noopener\" style=\"background:#f39c12; color:white; padding:14px 35px; text-decoration:none;\n              border-radius:5px; font-weight:bold; font-size:16px;\"\u003e\n      立即諮詢 \/ Inquiry Now\n    \u003c\/a\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:12px; color:#7f8c8d; text-align:center; line-height:1.6; margin-top:40px;\"\u003e\n  \u003cstrong\u003eHONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED\u003c\/strong\u003e\u003cbr\u003e\n  Trusted Partner for Automotive, Industrial, and Hard-to-find Components.\u003cbr\u003e\n  WhatsApp: +852 5209 9691 | Email: jason@jasinchip.com.hk\n\u003c\/p\u003e\n","brand":"TI","offers":[{"title":"Default Title","offer_id":51726064091352,"sku":"ti-pca9538dw-16-soic","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0791\/1446\/9592\/files\/296_7E4221009_7EDW_7E16_bfa6cb11-e9d8-4acd-9fcf-72d8c35f969a.jpg?v=1779900056","url":"https:\/\/www.jasinchip.com.hk\/en\/products\/ti-pca9538dw-16-soic","provider":"HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED","version":"1.0","type":"link"}