DS8921: Difference between DS8921 and DS8921A

Chase Jeong

Genius 5530 points

Part Number: DS8921

Hello TI experts,

Could you check the difference between DS8921 and DS8921A?

(I found the difference of DS8921AT in the datasheet, but I cannot find DS8921A)

Best regards,

Chase

over 2 years ago

0 Eric Schott1 over 2 years ago

TI__Guru 50795 points

Hi Chase,

The 'A' character denotes the use of the PDIP (8) package as opposed to the SOIC (8) package. As you found, the 'T' denotes the extended temperature range option, which is only available in the PDIP package.

Let me know if you have any more questions.

Regards,
Eric Schott

0 Chase Jeong over 2 years ago in reply to Eric Schott1

Genius 5530 points

Dear Eric,

Thank you for your support.

I found only SOIC package in the product page and datasheet as below ; and I cannot find PDIP package at all.

Could you please check it again?

Best regards,

Chase

0 Eric Hackett over 2 years ago in reply to Chase Jeong

TI__Guru 70002 points

Chase,

Other than the topside marking of the IC, I can't find any differences on my end. I'm going to ask internally about this and get back to this thread by the end of the week. Thank you for your patience.

Regards,

Eric Hackett

0 Chase Jeong over 2 years ago in reply to Eric Hackett

Genius 5530 points

Dear Eric,

Thank you for your support. Please let me know if there are any updates.

Best regards,

Chase

0 Eric Hackett over 2 years ago in reply to Chase Jeong

TI__Guru 70002 points

Chase,

The only difference can be found in the datasheet in the Receiver and Driver switching characteristics. For propagation parameters tpLH and tpHL for the receiver, the maximum time for the DS8921 is 22.5ns, and for the DS8921A the maximum time is 20ns.

Regards,

Eric Hackett

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DS8921: Difference between DS8921 and DS8921A