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Product Overview
The SN74LS540DWR is a high-performance octal buffer and line driver from Texas Instruments, designed with 3-state outputs and inverting logic. It is part of the 74LS family, offering low power consumption and high noise immunity. The device is ideal for driving bus lines or buffering memory address registers. Housed in a 20-pin SOIC package, it provides a compact solution for space-constrained applications.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.75V to 5.25V |
| Input Voltage Range |
0V to 5.5V |
| Output Current (IOL) |
24 mA |
| Output Current (IOH) |
-2.6 mA |
| Propagation Delay (tpd) |
18 ns (max) |
| Operating Temperature |
0°C to 70°C |
| Package |
20-SOIC |
| Logic Family |
LS |
| Number of Bits |
8 |
| Output Type |
3-State, Inverting |
Key Features
- 8-bit inverting buffer/line driver
- 3-state outputs for bus-oriented systems
- Low power consumption: 45 mW typical
- High noise immunity: typical VNH = 0.4V
- Input clamp diodes limit high-speed termination effects
- ESD protection exceeds 2000V per MIL-STD-883
- Wide operating voltage range
Target Applications
- 5G base station control logic
- Automotive dashboard display drivers
- Industrial PLC I/O modules
- Memory address buffering in servers
- Telecommunication line drivers
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74LS540DWR. 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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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
SN74LS540DWR 是德州儀器生產的高性能八路緩衝器和線路驅動器,具有三態輸出和反相邏輯。作為 74LS 系列的一員,它提供低功耗和高抗噪能力。該器件非常適合驅動總線或緩衝存儲器地址寄存器。採用 20 引腳 SOIC 封裝,為空間受限的應用提供了緊湊的解決方案。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.75V 至 5.25V |
| 輸入電壓範圍 |
0V 至 5.5V |
| 輸出電流 (IOL) |
24 mA |
| 輸出電流 (IOH) |
-2.6 mA |
| 傳播延遲 (tpd) |
18 ns (最大值) |
| 工作溫度 |
0°C 至 70°C |
| 封裝 |
20-SOIC |
| 邏輯系列 |
LS |
| 位數 |
8 |
| 輸出類型 |
三態,反相 |
核心特性
- 8 位反相緩衝器/線路驅動器
- 三態輸出,適用於總線系統
- 低功耗:典型值 45 mW
- 高抗噪能力:典型 VNH = 0.4V
- 輸入鉗位二極管限制高速終端效應
- ESD 保護超過 2000V(符合 MIL-STD-883)
- 寬工作電壓範圍
典型應用場景
- 5G 基站控制邏輯
- 汽車儀表板顯示驅動
- 工業 PLC I/O 模塊
- 服務器中的存儲器地址緩衝
- 電信線路驅動器
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