What is 74HC155?


This is DUAL 2 TO 4 LINE DECODER 3 TO 8 LINE DECODER.

A demultiplexer, also known as a "demux," is a digital circuit that takes a single input signal and directs it to one of several possible outputs. It is essentially the reverse of a multiplexer, which takes multiple inputs and directs them to a single output.


[PDF] Complete Technical Details can be found in the 74HC155 datasheet provided at this page.

Summary in PDF File


M54HC155 M74HC155 DUAL 2 TO 4 LINE DECODER 3 TO 8 LINE DECODER HIGH SPEED tPD 12 ns TYP AT VCC 5 V LOW POWER DISSIPATION ICC 4 A MAX AT TA 25 C HIGH NOISE IMMUNITY VNIH VNIL 28 VCC MIN OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE IOH IOL 4 mA MIN BALANCED PROPAGATION DELAYS tPLH tPHL WIDE OPERATING VOLTAGE RANGE VCC OPR 2 V TO 6 V PIN AND FUNCTION COMPATIBLE WITH 54 74LS155 B1R Plastic Package F1R Ceramic Package M1R Micro Package C1R Chip Carrier ORDER CODES M54HC155F1R M74HC155M1R M74HC155B1R M74HC155C1R PIN CONNECTIONS top view DESCRIPTION The M54 74HC155 is a high speed CMOS DUAL 2TO 4 LINE DECODER fabricated in silicon gate C2MOS technology It has the same high speed performance of LSTTL combined with true CMOS low power consumption It features dual 1 TO 4 line demultiplexers with individual strobe inputs 1G and 2G individual data inputs 1C and 2C and common binary address inputs A and B When both decoders are enabled by the strobes the inverted output of 1C data and non inverted output of 2C data will be brought to the select output pins of each sections A 1 TO 8 line demultiplexer can also be easily built up by providing a data signal to

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[ Detailed Data ]


The basic design of a demultiplexer involves using a set of logic gates to decode the control signals and direct the input signal to the selected output channel. The input signal is usually passed through a series of AND gates, with each gate corresponding to one of the possible output channels. The control signals are used to enable the appropriate AND gate, while the other gates are disabled.

Manufacturers : STMicroelectronics

STM - 74HC155 Datasheet PDF

STM 74HC155 DATA

DUAL 2 TO 4 LINE DECODER 3 TO 8 LINE DECODER

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Datasheet 74HC155.PDF DownLoad ( STM )


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