Crystal Oscillator Package (4 pins)

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SUMMARY

The discussion focuses on connecting a four-pin crystal oscillator package to a breadboard for testing its operation. The user seeks guidance on wiring the oscillator, specifically regarding ground connections and circuit configurations. The crystal oscillator is intended to function similarly to a C-CLR circuit, with a frequency of 0.5 MHz. Participants recommend using TTL or LSTTL test circuits and suggest including a 0.1uF capacitor across the power supply pins while omitting the 15pF output capacitor for worst-case loading tests.

PREREQUISITES
  • Understanding of crystal oscillator circuits
  • Familiarity with TTL and LSTTL logic families
  • Basic knowledge of breadboarding techniques
  • Experience with capacitor usage in electronic circuits
NEXT STEPS
  • Research wiring configurations for four-pin crystal oscillators
  • Learn about the characteristics of C-CLR circuits
  • Explore the specifications and applications of TTL and LSTTL circuits
  • Investigate the impact of load capacitance on crystal oscillator performance
USEFUL FOR

Electronics enthusiasts, hobbyists working with oscillators, and students studying circuit design will benefit from this discussion.

AdkinsJr
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Homework Statement


I'm trying to hook up crystal oscillator package on breadboard and test for expected operation: I'm not sure how and cannot find any data sheets for the pin connection diagrams, I attached an image I found of the kind of package I'm using. There are four pins.

Homework Equations

; Attempt Solution [/B]

The package is supposed to be equivalent to a CRL series circuit in parallel with another capacitor, as if you were measuring over the capacitor in parallel. (I attached a diagram). The values for the elements in the C-CLR circuit are for a .5 MHz crystal oscillator (that's what's given in my text)...I have crystal oscillator packages with varying operation frequencies...but I think I can assess how it should behave just by comparing to C-CLR circuit. I just don't know how to wire a crystal exactly...is there a ground?
 

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It will probably look something like this:

Datasheet
 
Thanks. I think this will work. So it looks like I'll have to wire up one of the test circuits TTL or LSTTL to test its' operation? Ouch!
 
AdkinsJr said:
Thanks. I think this will work. So it looks like I'll have to wire up one of the test circuits TTL or LSTTL to test its' operation? Ouch!
You can skip the 15pF output capacitor; it's just there to test for worst-case loading.
So you're left with one 0.1uF capacitor across the power supply pins. Not much of an 'ouch', is it?
 

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