EEVblog Electronics Community Forum
A Free & Open Forum For Electronics Enthusiasts & Professionals
Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
This topic
This board
Entire forum
Google
Bing
Home
Help
Search
About us
Links
Login
Register
EEVblog Electronics Community Forum
»
Electronics
»
Beginners
»
Confused about crytsal HC49US
« previous
next »
Print
Search
Pages: [
1
]
Go Down
Author
Topic: Confused about crytsal HC49US (Read 1249 times)
0 Members and 1 Guest are viewing this topic.
desertgreg
Contributor
Posts: 35
Country:
Confused about crytsal HC49US
«
on:
April 29, 2017, 03:37:07 pm »
I am looking at a reference schematic which uses a 25Mhz HC49US crystal. In the schematic there are three pins on the HC49US. When I look this device up in both mouser.com and digikey.com I find that it looks like an oval metal 'can' with two leads. I've attached a picture that has a snip of the schematic and a picture of the device. I need to integrate this into a design I'm working on but what are the three leads in the schematic?
Thanks for any help you can give me!
Logged
Vgkid
Super Contributor
Posts: 2710
Country:
Re: Confused about crytsal HC49US
«
Reply #1 on:
April 29, 2017, 03:43:28 pm »
The third pin is connected to the case, in that picture.
Logged
If you own any North Hills Electronics gear, message me. L&N Fan
The following users thanked this post:
sanwal209
ataradov
Super Contributor
Posts: 11248
Country:
Re: Confused about crytsal HC49US
«
Reply #2 on:
April 29, 2017, 05:53:02 pm »
And there is no real evidence that connecting the case to ground makes a difference. So if case does not explicitly has a pin for that, don't do it and skip this connection, it all will work.
«
Last Edit: April 29, 2017, 10:44:43 pm by ataradov
»
Logged
Alex
desertgreg
Contributor
Posts: 35
Country:
Re: Confused about crytsal HC49US
«
Reply #3 on:
April 29, 2017, 10:42:20 pm »
Thanks that helped a lot!
Logged
Print
Search
Pages: [
1
]
Go Up
« previous
next »
Share me
Smf
EEVblog Electronics Community Forum
»
Electronics
»
Beginners
»
Confused about crytsal HC49US
There was an error while thanking
Thanking...
EEVblog Main Site
EEVblog on Youtube
EEVblog on Twitter
EEVblog on Facebook
EEVblog on Odysee