74151 IC PDF

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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A set of select lines are then used to choose which of those inputs gets produced as output. Vcc is on pin 16 and GND is on pin 8. A common multiplexer is the 8: Various multiplexers are available in discrete chips as well for both series and series.

This section is empty; you can help add the missing info by editing this page. Such multiplexer can be design from four 8: A multiplexer with 2 N input lines requires N select lines. A single inverter is used to invert the selection line value to one of the gates so that only one of them e.

Its selection lines is therefore made jc a single bit. This section requires expansion; you can help adding the missing info.


A truth table is provided on the right. Retrieved from ” https: This page was last modified on 18 Novemberat Pins 5 and 6 are the outputs, the output on pin 6 is the inverted version of the output on pin 5. Where Equation m Subscript k is the kth minterm of the variable. The K-Map for that truth table is provided on the left. One can use a multiplexer to select which of those lines should be going to the shared data bus.


– 8-input multiplexer – ChipDB

Additionally multiplexers have also found their way to various other circuits such as adders. An enable input makes the multiplexer operate. Note that the implementation below is an active-low. It’s often desirable to add an enable or strobe input EN to a multiplexer.

7451 example, consider a data bus that is connected to multiple memory storage units. Multiplexers generally only come in a few common sizes.

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.

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. Large multiplexers can always be built from a collection of smaller ones.

MUXes are core components in most digital systems as they can be 71451 to pass the correct signal based on some conditional logic. Multiplexer Typical Symbol 2: It does mean that for multiplexers with odd number of inputs, some selection line combinations are not allowed e.

Multiplexer (MUX) – WikiChip

A set of inputs called select lines determine which input should be passed to the output. While smaller overall, this multiplexer is also nonrestoring. Output same as input, High-Z Enable. Consider a register file with 32 registers 71451 we only want to select a single register at any given time.


A multiplxer is a device that receives icc inputs from usually different sources. 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.

From there the sum of minterms and the logic function for a 2: 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: Complementary 774151, High-Z Enable.

Privacy policy 774151 WikiChip Disclaimers. Many different variations of multiplexers exist. The simplest multiplexer is the 2: MUX with an SR latch. 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 7451 generated on the bus at any given time. The enable is on pin 7. 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.