IC Figure below shows the 8-to-1 multiplexer Integrated circuit of TTL family This Integrated circuit has active LOW ENABLE input and gives. Texas Instruments [ KB ]; Data Sheet (current) [88 KB ]; Fairchild Semiconductors [58 KB ]; Data Sheet (current) [ KB ] 8-Input Multiplexer IC. I3, 1 •, 16, Vcc. I2, 2, 15, I4. I1, 3, 14, I5. I0, 4, 13, I6. Y, 5, 12, I7. Y, 6, 11, S0. E, 7, 10, S1. GND, 8, 9, S2. Pin, Symbol, Description. 1, I3, multiplexer input.

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Where Equation m Subscript k is the kth minterm of the variable. Note that the implementation below is an active-low.

Multiplexer

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.

There are many way to construct a 4: One can use a multiplexer to select which of those lines should be going to the shared data bus. Vcc is on pin 16 and GND is on pin 8. Its selection lines is therefore made of a single bit. For a multiplexer with Equation upper N inputs, you also need If left ceiling log Subscript 2 Baseline left-parenthesis upper N right-parenthesis right ceiling selection lines. Multiplexers generally only come in a few common sizes.

This page was last modified on 18 Novemberat The simplest multiplexer is the 2: Uc multiplexers can always be built from a collection of smaller 741551. Consider a register file with 32 registers where we only want to select a single register at any given time. Pins 5 and 6 7411 the outputs, the output on pin 6 is the inverted version of the output on pin 5. A multiplexer with 2 N input lines requires N select lines.

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MULTIPLEXER IC | sginfobmt

The K-Map for that truth table is provided on the left. Retrieved from ” https: Multiplexers are useful in any application in which data must be chosen from multiple sources to a single 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.

Typically larger multiplxers over 8 or 16 inputs are built using smaller multiplxers using a multiplexer tree. Even in ASIC design, arbitrary sized multiplexers are not always offered. The enable is on pin 7. Output same as input, High-Z Enable. 47151 common multiplexer is the 8: MUXes are core components in most digital systems as they can be used to pass the correct signal based on some conditional logic. This section requires expansion; you can help adding the missing info.

Complementary outputs, High-Z Enable. 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.

This section is empty; you can help add the missing info by editing this page. A multiplxer is a device that receives multiple inputs from usually different sources. Additionally multiplexers have also found their way to various other id such as adders.

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Multiplexer | Electronics Tutorial

MUX with an SR latch. From there the sum of minterms and the logic function for a 2: While smaller overall, this multiplexer is also nonrestoring. A single inverter is used to invert the selection line value to one of the gates so that only one of them e. Many different variations of multiplexers exist.

It does mean that for multiplexers with odd number of inputs, some selection line combinations are not allowed e. Various multiplexers are available in discrete chips as well for both series and series. 74115 multiplexer can be design from four 8: An enable input makes the multiplexer operate.

For example, consider a data bus that is connected to multiple memory storage units. A set of select lines are then used to choose which of those inputs gets produced as output.

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. Privacy jc About WikiChip Disclaimers. It’s often desirable to add an enable or strobe input EN to a multiplexer.

A truth table is 744151 on the right. A set of inputs called select lines determine which input should be passed to the output.

Multiplexer Typical Symbol 2: