CXO 
Crystal clock oscillator
 
Characteristics
 

Type

HC
3631

HC
3632

HC
3633

HC
3634

HC
3635

HC
3636

HC
3637

HC
3638

HC
3639
Frequency range

40 - 80 MHz

Supply voltage

5V ± 5%
Supply current

50 mA
Frequency stability with temperature

 

          -55°C to +85°C          

±1000

 ±100 ±1000            

          -20°C to +70°C          

       ±100 ±80        

          0°C to +70°C          

           ±1000 ±100 ±50  

          -10°C to +60°C          

                 ±80

Waveform

TTL

H level VH

2,4 V < VH < 5 V

L level VL

VL < 0,4 V

Duty cycle

40 - 60 %
 
Connections Outline drawing
 

 
Note
 

This type of oscillator is often used as a stable source of frequency in computers and other digital applications.
Modification of this type is available.