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Transistor-Transistor Logic (TTL) Lecture L4.1. Transistor-Transistor Logic (TTL) Developed in mid-1960s Large family (74xx) of chips from basic gates.

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Presentation on theme: "Transistor-Transistor Logic (TTL) Lecture L4.1. Transistor-Transistor Logic (TTL) Developed in mid-1960s Large family (74xx) of chips from basic gates."— Presentation transcript:

1 Transistor-Transistor Logic (TTL) Lecture L4.1

2 Transistor-Transistor Logic (TTL) Developed in mid-1960s Large family (74xx) of chips from basic gates to arithmetic logic units Becoming obsolete with the development of programmable logic devices (PLDs)

3 TTL Chips

4 TTL NAND, NOR, XOR

5 TTL Multiple-input Gates

6 Small-Scale Integrated (SSI) Circuits 1 to 10 gates NAND gate has 4 transistors

7 Medium-Scale Integrated (MSI) Circuits 10-100 gates Adders Comparators Multiplexers Decoders

8 Large-Scale Integrated (LSI) Circuits 100-1000 gates Arithmetic Logic Units

9 Very-Large-Scale Integrated (VLSI) Circuits >1000 gates Microprocessors Programmable Logic Devices (PLDs) Complex Programmable Logic Devices (CPLDs) Field Programmable Gate Arrays (FPGAs)


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