CD74HCT258E集成电路（IC）的信号开关多路复用器解码器规格书PDF中文资料

CD74HCT258E属于集成电路（IC）的信号开关多路复用器解码器。由美国德州仪器公司制造生产的CD74HCT258E信号开关，多路复用器，解码器逻辑型信号开关、多路复用器和编码器 IC 可用于对以数字格式表示数据的电信号进行路由和选择。这些器件与设计用于模拟信号的类似产品有所不同，它们保留的信息表示为两个电状态之一，而不是两个外部界限内的无穷变化量。

4.5-V to 5.5-V VCC Operation

Wide Operating Temperature Range of

–55°C to 125°C

Balanced Propagation Delays and

Transition Times

Standard Outputs Drive Up To 10 LS-TTL

Loads

Significant Power Reduction Compared to

LS-TTL Logic ICs

Inputs Are TTL-Voltage Compatible

description/ordering information

These devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized

systems. The 3-state outputs do not load the data lines when the output-enable (G) input is at a high logic level.

To ensure the high-impedance state during power up or power down, G 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.