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Product Overview
The SN74ALS646A-1NT is a high-performance 8-bit bus transceiver and register from Texas Instruments, designed for bidirectional asynchronous communication between two data buses. Housed in a 24-pin PDIP package, this device integrates D-type flip-flops with 3-state outputs, enabling data flow in both directions with storage capability. It operates from a single 5V supply and is characterized for operation from 0°C to 70°C.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.5V to 5.5V |
| Input Voltage (VI) |
0V to 5.5V |
| Output Voltage (VO) |
0V to 5.5V |
| High-Level Output Current (IOH) |
-15 mA |
| Low-Level Output Current (IOL) |
24 mA |
| Propagation Delay (tpd) |
7 ns (max) at 5V, 50pF |
| Operating Temperature |
0°C to 70°C |
| Package |
24-PDIP |
Key Features
- 8-bit bidirectional bus transceiver with registers
- Non-inverting data path
- 3-state outputs for bus-oriented applications
- Independent direction control (DIR) and output enable (OE)
- Edge-triggered D-type flip-flops for data storage
- Typical propagation delay: 7 ns
- Low power consumption: 50 mW typical
- Inputs accept voltages up to 5.5V
- Outputs sink/source 24 mA/15 mA
- Wide operating temperature range: 0°C to 70°C
Target Applications
The SN74ALS646A-1NT is ideal for high-speed data transfer and bus interfacing in various systems. Specific applications include:
- 5G base station control boards for data routing between processors and memory
- Automotive dashboard display systems for communication between microcontroller and display driver
- Industrial PLC (Programmable Logic Controller) I/O modules for signal buffering
- Telecommunications equipment for backplane bus interfacing
- Data acquisition systems for sensor data transfer
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74ALS646A-1NT. 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
SN74ALS646A-1NT 是德州儀器 (TI) 的一款高性能 8 位匯流排收發器與暫存器,專為雙向非同步數據通訊設計。採用 24 引腳 PDIP 封裝,整合 D 型正反器與三態輸出,支援雙向數據傳輸並具備儲存功能。工作電壓為 5V,溫度範圍 0°C 至 70°C。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.5V 至 5.5V |
| 輸入電壓 (VI) |
0V 至 5.5V |
| 輸出電壓 (VO) |
0V 至 5.5V |
| 高電平輸出電流 (IOH) |
-15 mA |
| 低電平輸出電流 (IOL) |
24 mA |
| 傳播延遲 (tpd) |
7 ns (最大值) 在 5V, 50pF |
| 工作溫度 |
0°C 至 70°C |
| 封裝 |
24-PDIP |
核心特性
- 8 位雙向匯流排收發器帶暫存器
- 同相數據路徑
- 三態輸出,適用於匯流排應用
- 獨立方向控制 (DIR) 和輸出使能 (OE)
- 邊緣觸發 D 型正反器實現數據儲存
- 典型傳播延遲:7 ns
- 低功耗:典型 50 mW
- 輸入可承受高達 5.5V 電壓
- 輸出拉/灌電流 24 mA/15 mA
- 寬工作溫度範圍:0°C 至 70°C
典型應用場景
SN74ALS646A-1NT 適用於高速數據傳輸和匯流排接口。具體應用包括:
- 5G 基站控制板,用於處理器與記憶體之間的數據路由
- 汽車儀表板顯示系統,用於微控制器與顯示驅動器之間的通訊
- 工業 PLC I/O 模組,用於信號緩衝
- 電信設備,用於背板匯流排接口
- 數據採集系統,用於傳感器數據傳輸
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我們的核心優勢包括:
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