SN74LS42N
Manufacturers：
Texas Instruments
Description：
IC 4-LINE BCD/DEC DECOD 16-DIP
SN74LS42NSR
Manufacturers：
Texas Instruments
Description：
IC 4-LINE BCD/DEC DECOD 16SO
SN74LS42NSRE4
Manufacturers：
Texas Instruments
Description：
IC 4-LINE BCD/DEC DECOD 16SO
SN74LS42NSRG4
Manufacturers：
Texas Instruments
Description：
IC DECODER/DEMUX SGL 16SO