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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It’s often desirable to add an enable or strobe input EN to a multiplexer.
Multiplexers are useful in any application in which data must be chosen from multiple sources to a single destination. Complementary outputs, High-Z Enable. Output same as input, High-Z Enable. This section is empty; you can help add the missing info by editing this page. The enable is on pin 7. A truth table is provided on the right.
MULTIPLEXER IC | sginfobmt
The K-Map for that truth table is provided on ix left. It does mean that for multiplexers with odd number of inputs, some selection line combinations are not allowed e. Note that the implementation below is an active-low. Large multiplexers can always iic built from a collection of smaller ones. Multiplexers generally only come in a few common sizes. From there the sum of minterms and the logic function for a 2: A multiplxer is a device that receives multiple inputs from usually different sources.
This page was last modified on 18 Novemberat Additionally multiplexers have also found their way to various other circuits such as adders. 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. For example, consider a data bus that is connected to multiple memory storage units.
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. Pins 5 and 6 are the outputs, the output on pin 6 is the inverted version of the output on pin 5.
Vcc is on pin 16 and GND is on pin 8. Where Equation m Subscript k is the kth minterm of the variable. 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 71451. The simplest multiplexer is the 2: A set of inputs called select lines determine which input should be passed to the output.
Multiplexer (MUX) – WikiChip
For a multiplexer with If upper N inputs, you also need Equation left ceiling log Subscript 2 Baseline left-parenthesis upper N right-parenthesis right ceiling selection lines. Typically larger multiplxers over 8 or 16 inputs are built using smaller multiplxers using a multiplexer tree. Various multiplexers are available in discrete chips as well for both series and series. A common multiplexer is the 8: Retrieved from ” https: There are many way to construct a 4: Such multiplexer can be design from four 8: MUXes are core components in most digital systems as they can be 74115 to pass lc correct signal based on some conditional logic.
A set of select lines are then used to choose which of those inputs gets produced as output. Its selection lines is therefore made of a single bit.
A multiplexer with 2 N input lines requires N select lines. Multiplexer Typical Symbol 2: Even in ASIC design, arbitrary kc multiplexers are not always offered.
Consider a register file with 32 registers where we only want to select a single register at any given time. Many different variations of multiplexers exist. One can use a multiplexer to select which of those lines should be going to the shared data bus. An enable input makes the multiplexer operate. 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 single inverter is used to invert the selection line value to one of the gates so that only one of them e. This section requires expansion; you can help adding the missing info. MUX with an SR latch.