SN74HC258DR 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

· Wide Operating Voltage Range of 2 V to 6 V

· High-Current Inverting Outputs Drive Up To 15 LSTTL Loads

· Low Power Consumption, 80-µA Max ICC

· ’HC257...Typical tpd = 9 ns

· ’HC258...Typical tpd = 12 ns

· ±6-mA Output Drive at 5 V

· Low Input Current of 1 µA Max

· Provides Bus Interface from Multiple Sources in High-Performance Systems

description/ordering information (continued)

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.