TXB0104-Q1: output impedance

Peter Xu

Expert 6070 points

Part Number: TXB0104-Q1
Other Parts Discussed in Thread: TXB0104

Tool/software:

Hi team,

Why the output impedance of TXB0104-Q1 changes when the VCC changes?

If the VCCO = 3.3V, what is the output impedance of TXB0104? 40 ohm or 50 ohm?

Regards,

Peter

7 months ago

0 Jack Guan 7 months ago

TI__Mastermind 40846 points

Hi Peter,

The output impedance (one-shot drive strength) is dependent on VCCO during the transition edges. With lower VCCO, the MOS is weaker and therefore impedance is lower.

For design considerations with the TXBxx devices, you can refer to this app note: www.ti.com/.../scea147.pdf

Regards,

Jack

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TXB0104-Q1: output impedance