DM74S253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

General Description

Each of these Schottky-clamped data selectors/multiplexers contains inverters and drivers to supply fully complementary, on-chip, binary decoding data selection to the AND-OR gates. Separate output control inputs are provided for each of the two four-line sections.

The 3-STATE outputs can interface directly with data lines of bus-organized systems. With all but one of the common outputs disabled (at a high impedance state), the low impedance of the single enable output will drive the bus line to a HIGH or LOW logic level.

特性 Features

■ 3-STATE version of S153 with same pin-out

■ Schottky-diode-clamped transistors

■ Permits multiplexing from N lines to 1 line

■ Performs parallel-T-serial conversion

■ Strobe/output control

■ High fan-out totem-pole outputs

■ Typical propagation delay

From data to output 6 ns

From select to output 12 ns

■ Typical power dissipation 275 mW