Integrated Circuit Logic Families. Outline  Integrated Circuit Logic Families.

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Presentation transcript:

Integrated Circuit Logic Families

Outline  Integrated Circuit Logic Families

Outline  Integrated Circuit Logic Families

Integrated Circuit Logic Families (1/4)  Some digital integrated circuit families: TTL, CMOS, ECL.  TTL: Transistor-Transistor Logic.  Uses bipolar junction transistors  Consists of a series of logic circuits: standard TTL, low- power TTL, Schottky TTL, low-power Schottky TTL, advanced Schottky TTL, etc.

Integrated Circuit Logic Families (2/4)

Integrated Circuit Logic Families (3/4)  CMOS: Complementary Metal-Oxide Semiconductor.  Uses field-effect transistors  ECL: Emitter Coupled Logic.  Uses bipolar circuit technology.  Has fastest switching speed but high power consumption.

Integrated Circuit Logic Families (4/4)  Performance characteristics  Propagation delay time.  Power dissipation.  Fan-out: Fan-out of a gate is the maximum number of inputs that the gate can drive.  Speed-power product (SPP): product of the propagation delay time and the power dissipation.