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Product Overview
The SN74ALS646FN from Texas Instruments is an octal bus transceiver designed for asynchronous two-way communication between data buses. It features non-inverting 3-state outputs and operates with a wide supply voltage range of 4.5V to 5.5V. The device is ideal for driving high-capacitance loads and is commonly used in memory interfaces, microprocessor systems, and industrial control applications.
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 |
| High-Level Output Current (IOH) |
-15 mA |
| Low-Level Output Current (IOL) |
24 mA |
| Propagation Delay (tpd) |
10 ns (max) |
| Operating Temperature |
0°C to 70°C |
| Package |
PLCC-20 (FN) |
Key Features
- 8-bit bidirectional bus transceiver with non-inverting outputs
- 3-state outputs for bus-oriented applications
- High drive capability: -15 mA / 24 mA
- Low power consumption
- Inputs are TTL-compatible
- Outputs source/sink 24 mA at 5V
Target Applications
- 5G base station control logic
- Automotive dashboard display interfaces
- Industrial PLC backplane communication
- Memory address/data bus buffering
- Microprocessor system expansion
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74ALS646FN. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
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environmental and safety standards.
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and seals to ensure ESD protection and physical integrity.
產品概述
SN74ALS646FN 是德州儀器(TI)生產的八位總線收發器,專為數據總線之間的異步雙向通信而設計。它具有同相三態輸出,工作電壓範圍為 4.5V 至 5.5V。該器件適用於驅動高電容負載,常用於存儲器接口、微處理器系統和工業控制應用。
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 |
| 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) |
10 ns(最大值) |
| 工作溫度 |
0°C 至 70°C |
| 封裝 |
PLCC-20 (FN) |
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
- 高驅動能力:-15 mA / 24 mA
- 低功耗
- 輸入兼容TTL電平
- 輸出在5V時可提供/吸收24 mA電流
典型應用場景
- 5G基站控制邏輯
- 汽車儀表盤顯示接口
- 工業PLC背板通信
- 存儲器地址/數據總線緩衝
- 微處理器系統擴展
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