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Product Overview
The SN74AHCT257BQBR from Texas Instruments is a high-speed quad 2-input multiplexer with non-inverting outputs. It operates from 4.5 V to 5.5 V, making it ideal for 5V logic systems. The device features Schottky-diode-clamped transistors for high speed and low power consumption. Packaged in a compact 16-WQFN (2.5x3.5 mm), it is suitable for space-constrained applications.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.5 V to 5.5 V |
| Input Voltage (VI) |
0 V to 5.5 V |
| Output Voltage (VO) |
0 V to VCC |
| High-Level Input Voltage (VIH) |
2 V (min) |
| Low-Level Input Voltage (VIL) |
0.8 V (max) |
| Propagation Delay (tpd) |
6.5 ns (typ) at 5 V, 50 pF |
| Output Current (IO) |
±8 mA |
| Operating Temperature |
-40°C to +125°C |
| Package |
16-WQFN (2.5x3.5 mm) |
Key Features
- Quad 2-input multiplexer with non-inverting outputs
- Wide operating voltage range: 4.5 V to 5.5 V
- High speed: typical propagation delay of 6.5 ns at 5 V
- Low power consumption: ICC of 40 µA (max)
- Schottky-diode-clamped inputs for high noise immunity
- Compatible with TTL input levels
- ESD protection exceeds 2000 V per MIL-STD-883, Method 3015
- Available in small 16-WQFN package for space-saving designs
Target Applications
- Data routing in 5G base stations (e.g., signal multiplexing in remote radio units)
- Automotive dashboard displays (e.g., selecting sensor data for infotainment systems)
- Industrial control systems (e.g., PLC input multiplexing)
- Consumer electronics (e.g., set-top boxes, gaming consoles)
- Communication equipment (e.g., routers, switches)
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74AHCT257BQBR. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
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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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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
SN74AHCT257BQBR 是德州儀器(TI)的一款高速四路2輸入多路復用器,具有同相輸出。它可在 4.5 V 至 5.5 V 電壓範圍內工作,非常適合 5V 邏輯系統。該器件採用肖特基二極管箝位晶體管,實現高速和低功耗。封裝為緊湊的 16-WQFN(2.5x3.5 mm),適用於空間受限的應用。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
4.5 V 至 5.5 V |
| 輸入電壓 (VI) |
0 V 至 5.5 V |
| 輸出電壓 (VO) |
0 V 至 VCC |
| 高電平輸入電壓 (VIH) |
2 V(最小值) |
| 低電平輸入電壓 (VIL) |
0.8 V(最大值) |
| 傳播延遲 (tpd) |
6.5 ns(典型值,5 V,50 pF) |
| 輸出電流 (IO) |
±8 mA |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
16-WQFN(2.5x3.5 mm) |
核心特性
- 四路2輸入多路復用器,同相輸出
- 寬工作電壓範圍:4.5 V 至 5.5 V
- 高速:典型傳播延遲 6.5 ns(5 V 時)
- 低功耗:ICC 最大 40 µA
- 肖特基二極管箝位輸入,高噪聲抗擾度
- 兼容 TTL 輸入電平
- ESD 保護超過 2000 V(MIL-STD-883,方法 3015)
- 採用小型 16-WQFN 封裝,節省空間
典型應用場景
- 5G 基站中的數據路由(例如,遠程射頻單元中的信號多路復用)
- 汽車儀表板顯示(例如,為信息娛樂系統選擇傳感器數據)
- 工業控制系統(例如,PLC 輸入多路復用)
- 消費電子產品(例如,機頂盒、遊戲機)
- 通信設備(例如,路由器、交換機)
環球供應鏈與批發合作夥伴方案
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