I have a 4 terminal crystal oscillator and I want to know how I connect it in a circuit. The four terminals are vdd, gnd, out and OE or ST(NOT) but on schematics the symbol is just 2 terminals. Can anyone tell me what these 2 terminals are?
The "schematic" is a functional equivalent, as such, you don't care if the supply is 3V or 5V(though the device may). As far as it's function, ground and out are the important signals, though OE should be also(don't know why it isn't ).Yeah here it is.
Yeah... pay no attention to what the other guys said. Pay attention to what crutschow said. The schematic shows a crystal. The crystal plus the inverter and the capacitor and the resistor make a "crystal oscillator". With the 4-terminal device you don't need the other components. You hook up Vcc to a voltage source. Read the datasheet for "Absolute Maximum Ratings" and typical operation values. Vcc should have a bypass capacitor to GND. GND should go to Ground. OE can be controlled by a logic signal if you want to turn the oscillator on and off. You can also tie it to VCC (since OE looks like it is active high and low would be STOP) to have the oscillator on all the time, and the output is your holy grail.Yeah here it is.
by Duane Benson
by Aaron Carman