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SamGibson
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This is a bidirectional logic level adapter. Check the note AN10441 from NXPAN10441 from NXP to get the full description.

It also allow to isolate a powered down bus section. Some current can indeed be injected into the chip from the communication lines via it's ESD clamp diodes, this circuit protect the chip from this behavior.

I often use this circuit with a pair of 100 ohms resistors on the SDA/SCL lines with a dedicated ESD diode to get the signals out of the board.

AN10441 - Level Shifter

This is a bidirectional logic level adapter. Check the note AN10441 from NXP to get the full description.

It also allow to isolate a powered down bus section. Some current can indeed be injected into the chip from the communication lines via it's ESD clamp diodes, this circuit protect the chip from this behavior.

I often use this circuit with a pair of 100 ohms resistors on the SDA/SCL lines with a dedicated ESD diode to get the signals out of the board.

AN10441 - Level Shifter

This is a bidirectional logic level adapter. Check the note AN10441 from NXP to get the full description.

It also allow to isolate a powered down bus section. Some current can indeed be injected into the chip from the communication lines via it's ESD clamp diodes, this circuit protect the chip from this behavior.

I often use this circuit with a pair of 100 ohms resistors on the SDA/SCL lines with a dedicated ESD diode to get the signals out of the board.

AN10441 - Level Shifter

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This is a bidirectional logic level adapter. Check the note AN10441 from NXPAN10441 from NXP to get the full description.

It also allow to isolate a powered down bus section. Some current can indeed be injected into the chip from the communication lines via it's ESD clamp diodes, this circuit protect the chip from this behavior.

I often use this circuit with a pair of 100 ohms resistors on the SDA/SCL lines with a dedicated ESD diode to get the signals out of the board.

AN10441 - Level Shifter

This is a bidirectional logic level adapter. Check the note AN10441 from NXP to get the full description.

It also allow to isolate a powered down bus section. Some current can indeed be injected into the chip from the communication lines via it's ESD clamp diodes, this circuit protect the chip from this behavior.

AN10441 - Level Shifter

This is a bidirectional logic level adapter. Check the note AN10441 from NXP to get the full description.

It also allow to isolate a powered down bus section. Some current can indeed be injected into the chip from the communication lines via it's ESD clamp diodes, this circuit protect the chip from this behavior.

I often use this circuit with a pair of 100 ohms resistors on the SDA/SCL lines with a dedicated ESD diode to get the signals out of the board.

AN10441 - Level Shifter

Added link to original source of included material, as required by site rule: https://electronics.stackexchange.com/help/referencing
Source Link
SamGibson
  • 18.3k
  • 5
  • 41
  • 63

This is a bidirectional logic level adapter. Check the note AN10441 from NXPAN10441 from NXP to get the full description.

It also allow to isolate a powered down bus section. Some current can indeed be injected into the chip from the communication lines via it's ESD clamp diodes, this circuit protect the chip from this behavior.

AN10441 - Level Shifter

This is a bidirectional logic level adapter. Check the note AN10441 from NXP to get the full description.

It also allow to isolate a powered down bus section. Some current can indeed be injected into the chip from the communication lines via it's ESD clamp diodes, this circuit protect the chip from this behavior.

AN10441 - Level Shifter

This is a bidirectional logic level adapter. Check the note AN10441 from NXP to get the full description.

It also allow to isolate a powered down bus section. Some current can indeed be injected into the chip from the communication lines via it's ESD clamp diodes, this circuit protect the chip from this behavior.

AN10441 - Level Shifter

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