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Product Overview
The SN74LS641NS is a high-performance 8-bit bus transceiver from Texas Instruments, designed for bidirectional asynchronous communication between two data buses. Housed in a 20-pin SOIC package, it features non-inverting outputs with three-state capability, making it ideal for multiplexed data transmission in digital systems. The device operates with a typical propagation delay of 12 ns and a wide supply voltage range of 4.75V to 5.25V, ensuring compatibility with TTL logic levels.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.75V – 5.25V |
| Input Voltage Range |
0V – 5.5V |
| Output Current (IOL) |
24 mA |
| Output Current (IOH) |
-15 mA |
| Propagation Delay (tPLH/tPHL) |
12 ns (typ) |
| Operating Temperature |
0°C – 70°C |
| Package |
20-SO (SOIC-20) |
| Logic Family |
LS |
| Number of Bits |
8 |
| Direction Control |
Dual (A to B / B to A) |
Key Features
- 8-bit bidirectional bus transceiver with non-inverting outputs
- Three-state outputs for bus-oriented applications
- Low power consumption: 45 mW typical
- High noise immunity: 0.4V typical
- Input clamp diodes limit high-speed termination effects
- Direct replacement for industry-standard 74LS641
Target Applications
- 5G base station control logic interfacing
- Automotive dashboard display data bus
- Industrial PLC backplane communication
- Telecommunications switching equipment
- Memory address/data bus buffering
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74LS641NS. 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
SN74LS641NS 是德州儀器 (TI) 生產的高性能 8 位總線收發器,專為兩個數據總線之間的雙向異步通信而設計。採用 20 引腳 SOIC 封裝,具有同相輸出和三態能力,非常適合數字系統中的多路數據傳輸。該器件典型傳播延遲為 12 ns,電源電壓範圍為 4.75V 至 5.25V,確保與 TTL 邏輯電平兼容。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.75V – 5.25V |
| 輸入電壓範圍 |
0V – 5.5V |
| 輸出電流 (IOL) |
24 mA |
| 輸出電流 (IOH) |
-15 mA |
| 傳播延遲 (tPLH/tPHL) |
12 ns (典型值) |
| 工作溫度 |
0°C – 70°C |
| 封裝 |
20-SO (SOIC-20) |
| 邏輯系列 |
LS |
| 位數 |
8 |
| 方向控制 |
雙向 (A 到 B / B 到 A) |
核心特性
- 8 位雙向總線收發器,同相輸出
- 三態輸出,適用於總線應用
- 低功耗:典型值 45 mW
- 高抗噪能力:典型值 0.4V
- 輸入箝位二極管限制高速終端效應
- 可直接替代行業標準 74LS641
典型應用場景
- 5G 基站控制邏輯接口
- 汽車儀表盤顯示數據總線
- 工業 PLC 背板通信
- 電信交換設備
- 存儲器地址/數據總線緩衝
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 SN74LS641NS 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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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。
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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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