74AC11257中文资料具有三态输出的四路 2 线路到 1 线路数据选择器/多路复用器数据手册TI规格书

描述 Description

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.

特性 Features

• 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