ST485CDR ST RS-485 Transceiver | 8-SOIC | 5V, 250kbps, Half-Duplex

Product Overview

The ST485CDR is a low-power, half-duplex RS-485/RS-422 transceiver from STMicroelectronics, designed for balanced data transmission in noisy environments. It operates from a single 5V supply and features a driver output capable of driving up to 32 unit loads. The device is housed in an 8-pin SOIC package, making it suitable for space-constrained applications. With a data rate of up to 250 kbps, it is ideal for industrial automation, building control, and telecommunications.

Detailed Technical Specifications

Key Features

• Low quiescent current: 300 µA (typical)
• Half-duplex communication
• Up to 32 transceivers on the bus
• Thermal shutdown protection
• Open-circuit, short-circuit, and idle bus fail-safe
• Compatible with TIA/EIA-485-A and TIA/EIA-422-B standards

Target Applications

• Industrial automation: PLCs, motor drives, sensors (e.g., Siemens S7-1200)
• Building automation: HVAC controllers, lighting systems (e.g., Johnson Controls Metasys)
• Telecommunications: 5G base station backhaul, network switches (e.g., Huawei 5G gNodeB)
• Transportation: railway signaling, traffic light controllers (e.g., Siemens Rail Automation)
• Security systems: access control panels, CCTV (e.g., Hikvision DS-K1T672)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for ST485CDR. 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

ST485CDR 是意法半導體推出的一款低功耗、半雙工 RS-485/RS-422 收發器，專為噪聲環境下的平衡數據傳輸設計。它採用單一 5V 電源供電，驅動器輸出可驅動多達 32 個單位負載。器件採用 8 引腳 SOIC 封裝，適合空間受限的應用。數據速率高達 250 kbps，非常適合工業自動化、樓宇控制和電信領域。

詳細技術參數

核心特性

• 低靜態電流：300 µA（典型值）
• 半雙工通信
• 總線上最多支持 32 個收發器
• 熱關斷保護
• 開路、短路和空閒總線故障安全
• 符合 TIA/EIA-485-A 和 TIA/EIA-422-B 標準

典型應用場景

• 工業自動化：PLC、電機驅動、傳感器（例如西門子 S7-1200）
• 樓宇自動化：HVAC 控制器、照明系統（例如江森自控 Metasys）
• 電信：5G 基站回傳、網絡交換機（例如華為 5G gNodeB）
• 交通運輸：鐵路信號、交通燈控制器（例如西門子鐵路自動化）
• 安防系統：門禁控制面板、閉路電視（例如海康威視 DS-K1T672）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 ST485CDR 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]