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Product Overview
The SN75ALS191DR from Texas Instruments is a dual differential driver designed for high-speed data transmission over balanced lines. It operates from a single 5V supply and supports data rates up to 20 Mbps. The device is compliant with TIA/EIA-422-B and TIA/EIA-485-A standards, making it suitable for industrial and telecommunications applications. Housed in an 8-pin SOIC package, it offers a compact solution for driving twisted-pair cables.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.75V to 5.25V |
| Output Voltage Swing |
±2V (min) at 100Ω load |
| Data Rate |
Up to 20 Mbps |
| Differential Output Voltage |
±2V (min) |
| Common-Mode Output Voltage |
±3V (max) |
| Propagation Delay Time |
11 ns (typ) |
| Rise/Fall Time |
7 ns (typ) |
| Operating Temperature Range |
-40°C to +85°C |
| Package |
8-SOIC |
Key Features
- Dual differential driver in a single package
- Compliant with TIA/EIA-422-B and TIA/EIA-485-A
- High data rate: up to 20 Mbps
- Low power consumption: 30 mW (typ) per driver
- Thermal shutdown protection
- Glitch-free power-up/power-down
- High-impedance outputs when disabled or VCC=0V
- Pin-to-pin compatible with industry-standard SN75175
Target Applications
- 5G base station backhaul communication
- Industrial automation PLC (e.g., Siemens S7-1200)
- Automotive dashboard display interfaces
- Building automation controllers (e.g., BACnet MS/TP)
- Data acquisition systems (e.g., NI cDAQ modules)
- Telecommunication line drivers
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN75ALS191DR. 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
SN75ALS191DR 是德州儀器推出的雙通道差分驅動器,專為平衡線路上的高速數據傳輸設計。它採用單一 5V 電源供電,支持高達 20 Mbps 的數據速率。該器件符合 TIA/EIA-422-B 和 TIA/EIA-485-A 標準,適用於工業和電信應用。採用 8 引腳 SOIC 封裝,為驅動雙絞線提供緊湊解決方案。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.75V 至 5.25V |
| 輸出電壓擺幅 |
±2V (最小值) 在 100Ω 負載下 |
| 數據速率 |
最高 20 Mbps |
| 差分輸出電壓 |
±2V (最小值) |
| 共模輸出電壓 |
±3V (最大值) |
| 傳播延遲時間 |
11 ns (典型值) |
| 上升/下降時間 |
7 ns (典型值) |
| 工作溫度範圍 |
-40°C 至 +85°C |
| 封裝 |
8-SOIC |
核心特性
- 單一封裝內集成雙通道差分驅動器
- 符合 TIA/EIA-422-B 和 TIA/EIA-485-A 標準
- 高數據速率:最高 20 Mbps
- 低功耗:每個驅動器典型功耗 30 mW
- 過熱關斷保護
- 無干擾上電/斷電
- 禁用或 VCC=0V 時輸出高阻抗
- 與業界標準 SN75175 引腳兼容
典型應用場景
- 5G 基站回程通信
- 工業自動化 PLC(例如西門子 S7-1200)
- 汽車儀表盤顯示接口
- 樓宇自動化控制器(例如 BACnet MS/TP)
- 數據採集系統(例如 NI cDAQ 模塊)
- 電信線路驅動器
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN75ALS191DR 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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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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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。
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