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DATA CONVERTER IC
DATA CONVERTER IC
74 LS 155- dual 2-line to 4-line decode
r/demultiplexer
DATA CONVERTER IC
74 LS 155- dual 2-line to 4-line decoder/demultiplexer
• The 74LS155 is a high-speed Dual 1-of-4 
Decoder/Demultiplexers. These devices have two decoders 
with common 2-bit Address inputs and separate gated Enable 
inputs. 
• Decoder “a” has an Enable gate with one active HIGH and one 
active LOW input.
• Decoder “b” has two active LOW Enable inputs. If the Enable 
functions are satisfied, one output of each decoder will be 
LOW as selected by the address inputs. 
DATA CONVERTER IC
ADC 0800
DATA CONVERTER IC
ADC 0800
• Digital to Analog Converter IC for Micro-controller Project 
-CNB644.
• The ADC0800 is an 8-bit monolithic A/D converter using P-
channel ion-implanted MOS technology. It contains a high 
input impedance comparator, 256 series resistors and analog 
switches, control logic and output latches. 
• Conversion is performed using a successive approximation 
technique where the unknown analog voltage is compared to 
the resistor tie points using analog switches. 
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