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Digital Schematics and Projects

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Circuit converts between TTL and shifted ECL

Circuit converts between TTL and shifted ECL

bidirectional circuit translates TTL to shifted ECL (SECL)

http://www.edn.com/archives/1996/081596/17di5.htm

Field-programmable devices

Field-programmable devices

http://www.edn.com/archives/1996/101096/21df_07.htm

Two transistors form bidirectional level translator

Two transistors form bidirectional level translator

a translation from 5 to 3V

http://www.edn.com/archives/1996/110796/23DI_02.htm

Divide by 'N' counter

Divide by 'N' counter

Simple circuit using 161s

http://www.wenzel.com/pdffiles/161divdr.pdf

Divide By 1.5 Counter

Divide By 1.5 Counter

Two inexpensive ICs divide a TTL clock signal by 1.5. By following the circuit with another flip/flop you could also generate a divide by three function.

http://www.imagineeringezine.com/PDF-FILES/divider1.pdf

C-MOS inverter makes low power amp

C-MOS inverter makes low power amp

With the addition of one resistor and a capacitor, some common logic ICs can be transformed from digital to analog duties. This circuit outlines some the features to expect from different inverter ICs.

http://www.discovercircuits.com/PDF-FILES/invertamp1.pdf