Transistor Transistor Logic

Home	www.play-hookey.com	Thu, 03-04-2021
\| Direct Current \| Alternating Current \| Semiconductors \| Digital \| Logic Families \| Digital Experiments \| Computers \| \| Analog \| Analog Experiments \| Oscillators \| Optics \| HTML Test \|
\| Getting Started \| Preparations \| DL Experiments \| RTL Experiments \| DTL Experiments \| TTL Experiments \| Multivibrators \| Basic Clock Sources \| Counter and Display \|
\| TTL Inverter \| 2-input TTL NOR Gate \|

Transistor Transistor Logic

If we combine the input diode structure of a DTL gate into a single transistor, we get a few advantages. First, a transistor takes up no more room in an IC than a diode, so we get a space savings. Second, a single transistor will operate more rapidly than a pair of separate diodes. Let's see how this can be made to work in a practical circuit.

TTL Inverter
2-input TTL NOR Gate