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TUSB8042: Internal Bond Wire Mismatch of TUSB8042

Takashi Onawa
Genius 13200 points

Part Number: TUSB8042
Other Parts Discussed in Thread: TUSB8040A1

Hi Team,

Do we need to take care internal Bond Wire Mismatch in artwork of TUSB8042?

TUSB8040A1's datasheet has a table of the each pin's mismatch data but there are no explanation about it in TUSB8042 datasheet.

If no, I plan to follow the designation describing TUSB8042's datasheet  below

11.1.3 Differential Pairs

7. Minimize the trace lengths of the differential pair traces. The maximum recommended trace length for SS differential pair signals and USB 2.0 differential pair signals is eight inches. Longer trace lengths require very careful routing to assure proper signal integrity.

8. Match the etch lengths of the differential pair traces (i.e. DP and DM or SSRXP and SSRXM or SSTXP and SSTXM). There should be less than 5 mils difference between a SS differential pair signal and its complement. The USB 2.0 differential pairs should not exceed 50 mils relative trace length difference.

 

Regards,

Takashi Onawa