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Product Overview
The SN75155DR from Texas Instruments is a single-channel line driver and receiver designed for bidirectional data communication over a single twisted-pair cable. It complies with the RS-485 standard, supporting differential signaling for robust noise immunity and long-distance transmission up to 1200 meters. The device operates from a single 5V supply and features a 1/8 unit load, allowing up to 256 nodes on the bus. Housed in an 8-pin SOIC package, it is ideal for industrial automation, building automation, and telecom infrastructure.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage |
4.75V to 5.25V |
| Data Rate |
Up to 1 Mbps |
| Number of Drivers/Receivers |
1/1 |
| Receiver Input Sensitivity |
±200 mV |
| Bus Fault Protection |
±60V |
| Common-Mode Voltage Range |
-7V to +12V |
| ESD Protection (HBM) |
±15 kV |
| Operating Temperature |
-40°C to +85°C |
| Package |
8-SOIC |
Key Features
- RS-485 compliant for reliable differential data transmission
- 1/8 unit load allows up to 256 transceivers on the bus
- Low power consumption: typical 300 µA shutdown current
- Thermal shutdown protection for driver overload
- Glitch-free power-up/power-down for hot-swapping capability
- Receiver open-circuit fail-safe ensures logic high when inputs are floating
Target Applications
- Industrial automation: PLC communication, motor drives, sensor networks
- Building automation: HVAC systems, lighting controls, security panels
- Telecom infrastructure: 5G base station backhaul, remote radio unit control
- Transportation: railway signaling, traffic light controllers
- Medical equipment: patient monitoring systems, diagnostic devices
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN75155DR. 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
SN75155DR 是德州儀器(TI)推出的單通道線路驅動器/接收器,專為通過單一雙絞線進行雙向數據通信而設計。它符合 RS-485 標準,支持差分信號以實現強大的抗噪能力和長距離傳輸(最遠 1200 米)。該器件由單一 5V 電源供電,具有 1/8 單位負載,允許總線上最多連接 256 個節點。採用 8 引腳 SOIC 封裝,適用於工業自動化、樓宇自動化和電信基礎設施。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 |
4.75V 至 5.25V |
| 數據速率 |
最高 1 Mbps |
| 驅動器/接收器數量 |
1/1 |
| 接收器輸入靈敏度 |
±200 mV |
| 總線故障保護 |
±60V |
| 共模電壓範圍 |
-7V 至 +12V |
| ESD 保護 (HBM) |
±15 kV |
| 工作溫度 |
-40°C 至 +85°C |
| 封裝 |
8-SOIC |
核心特性
- 符合 RS-485 標準,實現可靠的差分數據傳輸
- 1/8 單位負載,總線上最多可連接 256 個收發器
- 低功耗:典型關斷電流 300 µA
- 驅動器過載熱關斷保護
- 無干擾上電/斷電,支持熱插拔
- 接收器開路故障安全,輸入浮空時輸出邏輯高電平
典型應用場景
- 工業自動化:PLC 通信、電機驅動、傳感器網絡
- 樓宇自動化:HVAC 系統、照明控制、安防面板
- 電信基礎設施:5G 基站回傳、遠程射頻單元控制
- 交通運輸:鐵路信號、交通燈控制器
- 醫療設備:病人監護系統、診斷設備
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN75155DR 提供全面的供應鏈與批發解決方案。
我們的核心優勢包括:
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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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