MM54HCT155数据手册TI中文资料规格书

描述 Description

General Description
The MM54HCT155/MM74HCT155 is a high speed silicon gate CMOS decoder/demultiplexer. It features dual 1-to-4 line demultiplexers with independent strobes and common binary address inputs. When both sections are enabled by the strobes, the common address inputs select and route associated input data to the appropriate output of each section. The individual strobes permit activating or inhibiting each of the 4-bit sections as desired. Data applied to input C1 is inverted at its outputs and data applied to C2 is ‘‘noninverted’’ at its outputs. If the strobes (G1 and G2) are connected together and the Data Inputs are connected together, the device can be used as a 3-to-8 line decoder or a 1-to-8 line demultiplexer.
All inputs to the decoder are protected from damage due to electrostatic discharge by diodes to VCC and ground. The device is capable of driving 10 low power Schottky TTL equivalent loads.

特性 Features

■ Applications:
   Dual 2-to-4 line decoder
   Dual 1-to-4 line demultiplexer
   3-to-8 line decoder
   1-to-8 line demultiplexer
■ Typical propagation delay: 22 ns
■ Low quiescent current: 80 mA maximum (74HCT Series)