SN74HC253中文资料具有三态输出的双路 4 线路至 1 线路数据选择器/多路复用器数据手册TI规格书

描述 Description

Each of these data selectors/multiplexers contains inverters and drivers to supply full binary decoding data selection to the AND-OR gates. Separate output-control inputs are provided for each of the two 4-line sections.

The 3-state outputs can interface with and drive data lines of bus-organized systems. With all but one of the common outputs disabled (in the high-impedance state), the low impedance of the single enabled output drives the bus line to a high or low logic level. Each output has its own output-enable (OE)\\ input. The outputs are disabled when their respective OE\\ is high.

特性 Features

• 3-State Version of ’HC153
• 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
• Typical tpd = 9 ns
• ±6-mA Output Drive at 5 V
• Low Input Current of 1 µA Max
• Permit Multiplexing From n Lines to One Line
• Perform Parallel-to-Serial Conversion