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74AC11257技术文档下载：
74AC11257 - 产品图解：
74AC11257 - 具有三态输出的四路 2 线路到 1 线路数据选择器/多路复用器
74AC11257是TI公司的一款解码器/编码器/多路复用器产品，74AC11257是具有三态输出的四路 2 线路到 1 线路数据选择器/多路复用器，本页介绍了74AC11257的产品说明、应用、特性等，并给出了与74AC11257相关的TI元器件型号供参考。
74AC11257 - 具有三态输出的四路 2 线路到 1 线路数据选择器/多路复用器 - 解码器/编码器/多路复用器 - 特殊逻辑 - TI公司（Texas Instruments，德州仪器）
产品描述
This device is designed to multiplex signals from 4-bit data sources to four output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (OE\) input is at a high logic level.
To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
产品特性
- 3-State Outputs Interface Directly With System Bus
- Flow-Through Architecture Optimizes PCB Layout
- Center-Pin VCC and GND Configurations Minimize High-Speed Switching Noise
- 500-mA Typical Latch-Up Immunity at 125°C
- Provides Bus Interface From Multiple Sources in High-Performance Systems
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