MM54HC42 Datasheet - National Semiconductor

MM54HC42 BCD-to-Decimal Decoder

This decoder utilizes advanced silicon-gate CMOS technology Data on the four input pins select one of the 10 outputs corresponding to the value of the BCD number on the inputs An output will go low when selected otherwise it remains high If the input data is not a valid BCD number all outputs will r.

MM54HC42 Features

* Y Y Y Y Typical propagation delay 15 ns Wide supply range 2V

* 6V Low quiescent current 80 mA (74HC) Fanout of 10 LS-TTL loads Connection Diagram Dual-in-line Package Truth Table No Inputs D C B A 0 L L L L L L L L L H L L L H H H H H INVALID H H H H H H L L L L H H H H L L H H L L H H L

MM54HC42_NationalSemiconductor.pdf