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Product Overview
The ST3485EIDT is a 3.3V powered RS-485/RS-422 transceiver from STMicroelectronics, designed for high-speed data transmission up to 12 Mbps. It features a 1/8 unit load, allowing up to 256 nodes on the bus, and offers enhanced ESD protection up to ±15 kV on the transceiver outputs. The device is housed in an 8-pin SOIC package, making it suitable for space-constrained applications. Its low power consumption and robust protection make it ideal for industrial and communication systems.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage |
3.0V to 3.6V |
| Data Rate |
Up to 12 Mbps |
| Number of Nodes |
Up to 256 (1/8 unit load) |
| ESD Protection (IEC 61000-4-2) |
±15 kV (air), ±8 kV (contact) |
| Driver Output Voltage |
±1.5V min (with 54Ω load) |
| Receiver Input Sensitivity |
±200 mV |
| Receiver Input Hysteresis |
50 mV |
| Operating Temperature |
-40°C to +85°C |
| Package |
8-SOIC |
Key Features
- 3.3V low-power operation
- High data rate: up to 12 Mbps
- 1/8 unit load for up to 256 nodes on the bus
- Enhanced ESD protection: ±15 kV air, ±8 kV contact
- Thermal shutdown protection
- Open-circuit, short-circuit, and idle bus fail-safe
- Low power shutdown mode
- Compatible with TIA/EIA-485 and TIA/EIA-422 standards
Target Applications
- Industrial automation: PLCs, motor drives, sensors
- Building automation: HVAC controllers, lighting systems
- Telecommunications: 5G base stations, network switches
- Automotive: infotainment systems, dashboard displays
- Security systems: CCTV cameras, access control panels
- Medical equipment: patient monitoring, diagnostic devices
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
ST3485EIDT. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
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In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
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HK-SZ Synergy, Flexible Settlement: Direct global shipping from
Shenzhen with support for HK bank transfers and multi-currency.
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Escrow Secured Transactions: We support Escrow.com for secure
transactions, ensuring peace of mind for batch orders.
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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.
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100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
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RoHS Compliant: All electronic components comply with international
environmental and safety standards.
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
ST3485EIDT 是意法半导体推出的 3.3V 供电 RS-485/RS-422 收发器,支持高达 12 Mbps 的高速数据传输。其 1/8 单位负载特性允许总线上挂载多达 256 个节点,并在收发器输出端提供 ±15 kV 的增强型 ESD 保护。器件采用 8 引脚 SOIC 封装,适用于空间受限的应用。低功耗和强大的保护功能使其成为工业和通信系统的理想选择。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 |
3.0V 至 3.6V |
| 數據速率 |
高達 12 Mbps |
| 節點數量 |
最多 256 個(1/8 單位負載) |
| ESD 保護(IEC 61000-4-2) |
±15 kV(空氣),±8 kV(接觸) |
| 驅動器輸出電壓 |
±1.5V 最小值(54Ω 負載) |
| 接收器輸入靈敏度 |
±200 mV |
| 接收器輸入遲滯 |
50 mV |
| 工作溫度 |
-40°C 至 +85°C |
| 封裝 |
8-SOIC |
核心特性
- 3.3V 低功耗操作
- 高速率:高達 12 Mbps
- 1/8 單位負載,支持多達 256 個節點
- 增強型 ESD 保護:±15 kV 空氣,±8 kV 接觸
- 熱關斷保護
- 開路、短路和空閒總線故障安全
- 低功耗關斷模式
- 符合 TIA/EIA-485 和 TIA/EIA-422 標準
典型應用場景
- 工業自動化:PLC、電機驅動、傳感器
- 樓宇自動化:HVAC 控制器、照明系統
- 電信:5G 基站、網絡交換機
- 汽車:信息娛樂系統、儀表盤顯示
- 安防系統:閉路電視攝像機、門禁控制面板
- 醫療設備:病人監護、診斷設備
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 ST3485EIDT 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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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。
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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。
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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。
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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。
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。
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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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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。
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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。
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HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
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