SN74S124: Functions of the pins

Danilo A.

Mastermind 25285 points

Part Number: SN74S124

Hi Team,

A customer would like to know the functions of the pins of SN74S124 because the datasheet has very limited information.

Regards,

Danilo

over 3 years ago

0 Emrys Maier over 3 years ago

TI__Guru* 96621 points

Hi Danilo

The SN74S124 is a dual voltage controlled oscillator (VCO) with isolated supply and ground for the internal oscillator (isolated from the control circuitry).

I pulled some information from an old logic data book (https://www.ti.com/lit/ug/scyd013b/scyd013b.pdf)

The "FREQUENCY CONTROL" and "RANGE" pins take a 1V to 5V input.

The "Cext" pins should be connected to either side of a capacitor to provide the frequency range for operation. Capacitor size determines the base output frequency as per figure 1 of the datasheet.

The input voltages at "FREQUENCY CONTROL" and "RANGE" will shift the base frequency as per the graph in figure 2 of the datasheet.

I think everything else is fairly self-explanatory, If you need me to go into details on anything, please let me know.

0 Danilo A. over 3 years ago

TI__Mastermind 25285 points

Hi Team,

The customer wants to know the functions of pins, specifically pins FC, RNG, CX1, CX2 and OSC.

Regards,

Danilo

0 Danilo A. over 3 years ago in reply to Danilo A.

TI__Mastermind 25285 points

Hi Emrys,

Thank you very much for sharing this information.

Regards,

Danilo

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SN74S124: Functions of the pins