SN74LV4051A: Output voltage variation

Takeshi Sasaki

Part Number: SN74LV4051A

Hi team,

Could you give me comment on following customer questions?

Q1. Could you share any reference data on the output voltage variation or accuracy?

Q2. Could you give me comment on how to calculate/estimate the output voltage variation? Can it be calculated caused by Ron voltage drop only?

Best regards,

Takeshi Sasaki

over 2 years ago

0 Clemens Ladisch over 2 years ago

Guru 268730 points

Yes, a closed switch behaves somewhat like a resistor. But the resistance varies with voltage, and is lowest at the supply rails (see r_on(p)). Also see the On-resistance flatness and on-capacitance training video.

0 Tyler McGuire over 2 years ago

TI__Expert 3515 points

Hi Takeshi,

As Clemens mentioned, the output voltage will essentially be the input voltage less the RON voltage drop. The TI Precision Labs video linked has a good explanation of RON. The RON will vary based on the supply voltage and across the signal voltage range.

Thanks,
Tyler

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SN74LV4051A: Output voltage variation