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December 9, 2025
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ST25R3919B: EXT_LM voltage level

  • December 9, 2025
  • 2 replies
  • 389 views

Hi

From the ST25R3919B datasheet, I cannot find or understand the voltage level of EXT_LM. Does the EXT_LM voltage level depend on the VDD supply?”

BR

Best answer by Ulysses HERNIOSUS

Hi,

 

EXT_LM is being driven by VDD_TX.

BR, Ulysses

2 replies

Ulysses HERNIOSUS
Technical Moderator
December 9, 2025

Hi,

 

EXT_LM is being driven by VDD_TX.

BR, Ulysses

Carlo Corlattoni
ST Employee
December 12, 2025

Hello,

the ext_lm output level is VDD_TX.

Br