SN74HC251数据手册集成电路（IC）的信号开关多路复用器解码器规格书PDF

描述 Description

These data selectors/multiplexers contain full binary decoding to select 1-of-8 data sources and feature strobe-controlled complementary 3-state outputs.

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. Both outputs are controlled by the output-enable (OE)\\ input. The outputs are disabled when OE\\ is high.

特性 Features

• 3-State Version of ’HC151
• Wide Operating Voltage Range of 2 V to 6 V
• High-Current 3-State Outputs Interface Directly With System Bus or Can 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
• Perform Parallel-to-Serial Conversion
• Complementary Outputs Provide True and Inverted Data