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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This page was last modified on 18 Novemberat Multiplexers are useful in any application in which data must be chosen from multiple sources to a single destination. A set of select lines are then used to choose which of those inputs gets produced as output. Additionally multiplexers have also found their way to various other circuits such as adders.
IC pinout diagram – Integrated Circuits
Large multiplexers can always be built from a collection of smaller ones. It’s often desirable to add an enable or strobe input EN to a multiplexer. A multiplxer is a device that receives multiple inputs from usually different sources. One can use a multiplexer to select which of those lines should be going to the shared data bus.
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. Such multiplexer can be design from four 8: Output same as input, High-Z Enable.
Multiplexer | Electronics Tutorial
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. Where Equation m Subscript k is the kth minterm of the variable.
An enable input makes the multiplexer operate. While smaller overall, this multiplexer is also nonrestoring. For example, consider a data bus that is connected to multiple memory storage units. A common multiplexer is the 8: MUX with an SR latch.
Many different variations of multiplexers exist.
There are many way to construct a 4: Typically larger multiplxers over 8 or 16 inputs are built using smaller multiplxers using a multiplexer tree. The K-Map 774151 that truth table is provided on the left. It does mean that for multiplexers with odd number of inputs, some selection line combinations are not allowed e.
A truth table is provided on the right. Retrieved from ” https: 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.
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. From there the sum of minterms and the logic function for a 2: MUXes are core components in iv digital systems as they can be used to pass the correct signal based on some conditional logic. Various multiplexers are available in discrete chips as well for both series and series.
Its selection lines is therefore made of a single bit. Even in ASIC design, arbitrary sized multiplexers are not always offered. A set of inputs called select lines determine which input should be passed to the output.
Complementary outputs, High-Z Enable. Multiplexer Typical Symbol 2: Note that the implementation below is an active-low. Vcc is on pin 16 and GND is on pin 8. Consider a register file with 32 registers where we only want to select a single register at any given time.
A multiplexer with 2 N input lines requires N select lines. 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. The simplest multiplexer is the 2: This section requires expansion; you can help adding the missing info.
The enable is on pin 7. This section is empty; you iic help add the missing info by editing this 741511.