IC 74151 PDF

Complete circuits for Multiplexer and De-multiplexer circuits using TTL IC and This Data Selector Multiplexer contains full on-chip decod- ing to select one-of- eight data sources as a result of a unique three-bit binary code at the Select. A typical IC is an 8-to-1 multiplexer with eight inputs and two outputs. The two outputs are active low and active high outputs. It has three.

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This page was last modified on 18 Novemberat For example, consider a data bus that is connected to multiple memory storage units. The A have a strobe input which must be at a low logic level to enable ci devices. Same day dispatch for Most orders if payment done before 4 pm. This section is empty; you 47151 help add the missing info by editing this page.

A truth table is provided on the right.

This section requires expansion; you can help adding the missing info. A multiplexer with 2 N input lines requires N select lines. So you will be eligible to take input tax credit. From there the sum of minterms and the logic function for a 2: Typically larger multiplxers over 8 or 16 inputs are built using smaller multiplxers using a multiplexer tree. IF component not in Stock or require more quantity or want to buy in bulk e-mail us your requirements on: A set of inputs called select lines determine which input should be passed to the output.

It’s often desirable to add an enable or strobe input EN to a multiplexer.

It does mean that for multiplexers with odd number of inputs, some selection line combinations are not allowed e.


The K-Map for that truth table is provided on the left. Signals to the select lines usually come from a control unit that determines which, if any, of the signals should be routed to some destination. Those types of multiplexers can be hooked up directly to a shared bus ensuring that only one signal is being generated on the bus at any given time.


A multiplexer mux or a data selector or input selector is a combinational circuit device that selects one of N inputs and provides it on its output. Write a review 0 reviews.

Vcc is on pin 16 and GND is on pin 8.

The top transmission gate controls if the input from A should pass to the output while the bottom transmission gate does the same for the B input. GST Invoice on all Purchase. A multiplxer is a device that receives multiple inputs from usually different sources. Complementary outputs, High-Z Enable. The A incorporates address buffers which have symmetrical propagation delay times through the complementary paths.

A set of select lines are then used to choose which of those inputs gets produced as output. Note that the implementation below is an active-low.

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The simplest multiplexer is the 2: A single inverter is used to invert the selection line value to one of the gates so that only one of them e. One can use a multiplexer to select which of those lines should be going to the shared data bus.

MUXes are core components in most digital systems as they can be used to pass the correct signal based on some conditional logic. Additionally multiplexers have also found their way to various other circuits such as adders.


The enable is on pin 7. Where Equation m Subscript k is the kth minterm of the variable. Consider a register file with 74115 registers where we only want to select a single register at any given time.

Output same as input, High-Z Enable. While smaller overall, this multiplexer is also nonrestoring. Have You Seen Product Page: A common multiplexer is the 8: Even in ASIC design, arbitrary sized multiplexers are not always offered.

Features of selects one-of-eight data lines Performs parallel-to-serial conversion Permits multiplexing from N lines to one line Also for use as Boolean function generator Typical average propagation delay time, data input to I output: Multiplexer Typical Symbol 2: A high level at the strobe forces the W output high and the Y output as applicable low.

Its selection lines is therefore made of a iv bit. Such multiplexer can be design from four 8: Privacy policy About WikiChip Disclaimers.

There are many way to construct a 4: Pins 5 and 6 are the outputs, the output on pin 6 is the inverted 7151 of the output on pin 5. MUX with an SR latch. Icc generally only come in a few common sizes. Retrieved from ” https: It also has complementary W and Y outputs, whereas the has an inverted W output only. For a multiplexer with Equation upper N inputs, you also need Equation left ceiling log Subscript 2 Baseline left-parenthesis upper N right-parenthesis right ceiling selection lines.