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A gate equivalent (GE) stands for a unit of measure which allows to specify manufacturing-technology-independent complexity of digital electronic circuits
Digital circuit

Digital electronics are electronics systems that use digital signals. Digital electronics are representations of Boolean algebra and are used in computers, mobile phones, and other consumer products....
. For today's CMOS
CMOS

Complementary metal?oxide?semiconductor , is a major class of integrated circuits. CMOS technology is used in microprocessors, microcontrollers, Static Random Access Memory, and other digital logic circuits....
 technologies, the silicon area of a two-input drive-strength-one NAND
Nand

NAND may stand for:*Logical NAND , a binary operation in logic.**NAND gate, an electronic gate that implements a logical NAND....
 gate
Logic gate

A logic gate performs a logical operation on one or more logic inputs and produces a single logic output. The logic normally performed is Boolean logic and is most commonly found in digital circuits....
 usually constitutes the technology-dependent unit area commonly referred to as gate equivalent. A specification in gate equivalents for a certain circuit reflects a complexity measure, from which a corresponding silicon area can be deduced for a dedicated manufacturing technology.

In digital circuit design, a dedicated standard cell library
Standard cell

In semiconductor design, standard cell methodology is a method of designing Application-specific_integrated_circuit with mostly digital-logic features....
 is employed for each manufacturing technology (e.g., CMOS
CMOS

Complementary metal?oxide?semiconductor , is a major class of integrated circuits. CMOS technology is used in microprocessors, microcontrollers, Static Random Access Memory, and other digital logic circuits....
).






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A gate equivalent (GE) stands for a unit of measure which allows to specify manufacturing-technology-independent complexity of digital electronic circuits
Digital circuit

Digital electronics are electronics systems that use digital signals. Digital electronics are representations of Boolean algebra and are used in computers, mobile phones, and other consumer products....
. For today's CMOS
CMOS

Complementary metal?oxide?semiconductor , is a major class of integrated circuits. CMOS technology is used in microprocessors, microcontrollers, Static Random Access Memory, and other digital logic circuits....
 technologies, the silicon area of a two-input drive-strength-one NAND
Nand

NAND may stand for:*Logical NAND , a binary operation in logic.**NAND gate, an electronic gate that implements a logical NAND....
 gate
Logic gate

A logic gate performs a logical operation on one or more logic inputs and produces a single logic output. The logic normally performed is Boolean logic and is most commonly found in digital circuits....
 usually constitutes the technology-dependent unit area commonly referred to as gate equivalent. A specification in gate equivalents for a certain circuit reflects a complexity measure, from which a corresponding silicon area can be deduced for a dedicated manufacturing technology.

In digital circuit design, a dedicated standard cell library
Standard cell

In semiconductor design, standard cell methodology is a method of designing Application-specific_integrated_circuit with mostly digital-logic features....
 is employed for each manufacturing technology (e.g., CMOS
CMOS

Complementary metal?oxide?semiconductor , is a major class of integrated circuits. CMOS technology is used in microprocessors, microcontrollers, Static Random Access Memory, and other digital logic circuits....
). The standard cell library
Standard cell

In semiconductor design, standard cell methodology is a method of designing Application-specific_integrated_circuit with mostly digital-logic features....
 comprises many different logic gate
Logic gate

A logic gate performs a logical operation on one or more logic inputs and produces a single logic output. The logic normally performed is Boolean logic and is most commonly found in digital circuits....
s, for example a NAND
Nand

NAND may stand for:*Logical NAND , a binary operation in logic.**NAND gate, an electronic gate that implements a logical NAND....
 gate. For each logical type of logic gate
Logic gate

A logic gate performs a logical operation on one or more logic inputs and produces a single logic output. The logic normally performed is Boolean logic and is most commonly found in digital circuits....
, e.g., a two-input NAND
Nand

NAND may stand for:*Logical NAND , a binary operation in logic.**NAND gate, an electronic gate that implements a logical NAND....
, there usually exist different physical realizations in the standard cell library
Standard cell

In semiconductor design, standard cell methodology is a method of designing Application-specific_integrated_circuit with mostly digital-logic features....
, for instance with different output drive strengths.

Basically, a two-input drive-strength-one NAND
Nand

NAND may stand for:*Logical NAND , a binary operation in logic.**NAND gate, an electronic gate that implements a logical NAND....
 gate in CMOS
CMOS

Complementary metal?oxide?semiconductor , is a major class of integrated circuits. CMOS technology is used in microprocessors, microcontrollers, Static Random Access Memory, and other digital logic circuits....
 technology consists of four transistor
Transistor

In electronics, a transistor is a semiconductor device commonly used to Electronic amplifier or switch Electronics signals. A transistor is made of a solid piece of a semiconductor material, with at least three terminals for connection to an external circuit....
s. If higher output drive strength is required, an additional output driver stage of four transistor
Transistor

In electronics, a transistor is a semiconductor device commonly used to Electronic amplifier or switch Electronics signals. A transistor is made of a solid piece of a semiconductor material, with at least three terminals for connection to an external circuit....
s is added.

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See also

  • Logic gate
    Logic gate

    A logic gate performs a logical operation on one or more logic inputs and produces a single logic output. The logic normally performed is Boolean logic and is most commonly found in digital circuits....
  • Logic family
    Logic family

    In computer engineering, a logic family may refer to one of two related concepts. A logic family of monolithic digital integrated circuit devices is a group of electronic logic gates constructed using one of several different designs, usually with input/output standards and power supply characteristics within a family....
  • CMOS
    CMOS

    Complementary metal?oxide?semiconductor , is a major class of integrated circuits. CMOS technology is used in microprocessors, microcontrollers, Static Random Access Memory, and other digital logic circuits....
  • NMOS logic
    NMOS logic

    nMOS logic uses n-type metal-oxide-semiconductor field effect transistors to implement logic gates and other digital circuits. nMOS transistors have three modes of operation: cut-off, triode, and saturation ....
  • Transistor
    Transistor

    In electronics, a transistor is a semiconductor device commonly used to Electronic amplifier or switch Electronics signals. A transistor is made of a solid piece of a semiconductor material, with at least three terminals for connection to an external circuit....
  • Standard cell
    Standard cell

    In semiconductor design, standard cell methodology is a method of designing Application-specific_integrated_circuit with mostly digital-logic features....
  • MOSFET
    MOSFET

    The metal?oxide?semiconductor field-effect transistor is a device used to amplify or switch electronic signals. The basic principle of the device was first proposed by Julius Edgar Lilienfeld in 1925....
  • Fanout
    Fanout

    Fan-out is a measure of the ability of a logic gate output, implemented Electronics, to drive a number of inputs of other logic gates of the same type....
  • FO4
    FO4

    Fan-out of 4 is a process independent delay metric used in digital CMOS technologies.Fan out = Cload / CinCload = total MOS gate capacitance driven by the logic gate under consideration...
  • Boolean logic
    Boolean logic

    Boolean algebra is a logical calculus of logical values, developed by George Boole in the late 1830s. It resembles the algebra of real numbers as taught in high school, but with the numeric operations of multiplication xy, addition x + y, and negation −x replaced by the respective logical operations of conjun...
  • Digital circuit
    Digital circuit

    Digital electronics are electronics systems that use digital signals. Digital electronics are representations of Boolean algebra and are used in computers, mobile phones, and other consumer products....