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Transistor-Transistor Logic (TTL)

Transistor-Transistor Logic (TTL). Lecture L4.1. 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). TTL Chips. TTL NAND, NOR, XOR.

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Transistor-Transistor Logic (TTL)

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  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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