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8086 has two ground pins because to make the pins count 40(even number(40) so that it fits perfectly in ic cabin). that's all there no specfic operation for the both grounds .both do same operation

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12y ago
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14y ago

The 8086 has two ground pins in order to improve its ability to pull multiple, potentially all, of the bus pins to ground, in a period of time that meets the fall time and fan out requirements of the bus. Pull to ground (VOL) requires more current than pull to VOH because of the design of LS TTL. Even though the internal design of the 8086 is MOS technology based, the external data bus is designed to interface with LS TTL.

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13y ago

There are basically two reasons for doing so, one is to remove GROUND BOUNCE one more reason is circuit complexity demands a large amount of current flowing through the circuits, and multiple grounds help in dissipating the accumulated heat so that device will be safe.

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14y ago

THERMAL RUNAWAY 8086 micro processor has two ground pins to protect the chip from thermal runaway ie when high current is flowing in the circuit temperature also rises

hence 2 ground chips are used and to make the packing symmetry of the chip

ie 40 pins (even)

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13y ago

There are two grounds in the 8086 microprocessor in order the split the load of all of the possible output pins that can pull to ground. Splitting the load between two pins cuts the possible current draw on each pin by one half.

It is not necessary to also split Vcc because the TTL interface does not require as high a pull up current as it does a pull down current.

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11y ago

The 8086 has two ground pins in order to maintain the required fanout when pulling low.

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3y ago

For low power consumption

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Q: Why do 8086 need two ground pins?
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Why 2 gnd are used in microprocessor 8086?

Two ground pins are used in the 8086 microprocessor to increase the bus pull-down current capacity.


Why there ground pins on a microprocessor chip?

There are ground pins on a microprocessor chip for the same reason there are ground pins on any kind of chip - to provide a current sink path for gates that need to pull to ground. If you are asking why there are two ground pins on some processors such as the 8086/8088, the answer is that one ground pin is not enough - that if all gates pulled to ground at the same time, the current transient would destabilize the processor - so two were provided.


Why are there two grounds in 8086 chip?

hi, one ground is no enough.........


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