DM74ALS253M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

This Data Selector/Multiplexer contains full on-chip decoding to select one-of-four data sources as a result of a unique two-bit binary code at the Select Inputs. Each of the two Data Selector/Multiplexer circuits have their own separate Data and Output Control inputs and a non-inverting 3-STATE output buffer. The Output Control inputs, when at the high level, place the corresponding output in the high impedance OFF-State. In order to prevent bus access conflicts, output disable times are shorter than output enable times. The Select input buffers incorporate internal overlap features to ensure that select input changes do not cause invalid output transients.

特性 Features

■ Advanced oxide-isolated, ion-implanted Schottky TTL process

■ Switching performance is guaranteed over full temperature and VCC supply range

■ Pin and functional compatible with LS family counterpart

■ Improved output transient handling capability

■ Output control circuitry incorporates power-up 3-STATE feature