TLK110 : Input capacitance of XI pin

alpha

Other Parts Discussed in Thread: TLK110

Dear specialist

TLK110 datasheet describe about max value of "Load Capacitance" at Table 7-1.25MHz Oscillator specification.

Is the above value same as input capacitance of XI pin ?
If not , please let me know about that.

Background
Customer will using external OSC.
They can not find any OSC why it is so hard that both "Load Capacitance max.30pf" and "Rise/Fall time max.8ns" are satisfied.

Best regards.

over 11 years ago

0 Patrick OFarrell over 11 years ago

TI__Mastermind 31600 points

I will check on this with the team.

Patrick

0 Noam Sadan over 11 years ago in reply to Patrick OFarrell

TI__Intellectual 1500 points

Hi,

We have used the following OSC won our boards to validate the TLK performances:
1. SG-211SCE (d) 25MHZ from Epson.
2. VF3AH1 from VALPEY_FISHER (which is now obsolete).

A short query on Digi-key showed some other options as well:

1. VG-4231CA from Epson.
2. ECS-3953M from ECS.
3. Model 625 from CTS.
4. FNETHE025 from Pericom.

Thanks,
Noam

0 alpha over 11 years ago in reply to Noam Sadan

Expert 2530 points

Dear Noam

Thank you for your reply.
Are there specified max value of input capacitance of XI pin?

If it is not specified , how should our customer assume about max value?

Best regards

0 Noam Sadan over 11 years ago in reply to alpha

TI__Intellectual 1500 points

Hi,

Max Input Capacitance of XI pin is 2 pF.

Thanks,
Noam

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TLK110 : Input capacitance of XI pin