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Product Overview
The SN74AS645DWR is a high-performance octal bus transceiver from Texas Instruments, designed for bidirectional asynchronous communication between two data buses. It features 8-bit non-inverting buffers with three-state outputs, making it ideal for bus-oriented systems. The device operates from a 4.5V to 5.5V supply and is housed in a 20-pin SOIC package. With advanced Schottky (AS) technology, it offers fast propagation delays and high output drive capability.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.5V to 5.5V |
| Input Voltage Range |
0V to 5.5V |
| Output Voltage Range |
0V to VCC |
| Propagation Delay (tpd) |
6.5 ns (typ) at 5V |
| Output Current (IOH/IOL) |
-15 mA / 64 mA |
| Operating Temperature |
0°C to 70°C |
| Package |
20-SOIC (DWR) |
| Logic Family |
AS (Advanced Schottky) |
| Number of Bits |
8 |
| Direction Control |
DIR pin |
| Output Enable |
Active-low OE |
Key Features
- Bidirectional bus transceiver with 8-bit non-inverting buffers
- Three-state outputs for bus isolation
- High-speed propagation delay: 6.5 ns typical
- High output drive: up to 64 mA sink current
- ESD protection exceeds 2000 V per MIL-STD-883
- Wide operating voltage range: 4.5V to 5.5V
- Industry-standard 20-SOIC package
Target Applications
- 5G base station control boards for data bus isolation
- Automotive dashboard display modules for signal buffering
- Industrial PLC I/O modules for bidirectional communication
- Telecommunications switching equipment
- Memory interface in embedded systems
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74AS645DWR. 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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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
SN74AS645DWR 是德州儀器生產的高性能八路匯流排收發器,專為兩個數據匯流排之間的雙向異步通信而設計。它包含8位非反相緩衝器,具有三態輸出,非常適合匯流排導向系統。該器件在4.5V至5.5V電源下工作,採用20引腳SOIC封裝。憑藉先進的肖特基(AS)技術,它提供快速的傳播延遲和高輸出驅動能力。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.5V 至 5.5V |
| 輸入電壓範圍 |
0V 至 5.5V |
| 輸出電壓範圍 |
0V 至 VCC |
| 傳播延遲 (tpd) |
6.5 ns (典型值) 在5V |
| 輸出電流 (IOH/IOL) |
-15 mA / 64 mA |
| 工作溫度 |
0°C 至 70°C |
| 封裝 |
20-SOIC (DWR) |
| 邏輯系列 |
AS (先進肖特基) |
| 位數 |
8 |
| 方向控制 |
DIR 引腳 |
| 輸出使能 |
低電平有效 OE |
核心特性
- 雙向匯流排收發器,帶8位非反相緩衝器
- 三態輸出,用於匯流排隔離
- 高速傳播延遲:典型值6.5 ns
- 高輸出驅動:高達64 mA 灌電流
- ESD 保護超過2000 V,符合MIL-STD-883
- 寬工作電壓範圍:4.5V 至 5.5V
- 業界標準20-SOIC封裝
典型應用場景
- 5G基站控制板,用於數據匯流排隔離
- 汽車儀表盤顯示模塊,用於信號緩衝
- 工業PLC I/O模塊,用於雙向通信
- 電信交換設備
- 嵌入式系統中的存儲器接口
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN74AS645DWR 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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