What's the difference between TJA1051T/E and TJA1051T/CM?

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What's the difference between TJA1051T/E and TJA1051T/CM?

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owenchen1
Contributor I

Hi,

What's the difference between TJA1051T/E and TJA1051T/CM?

Can they completely replace each other?

Is the function of the fifth pin of  TJA1051T/CM  the same as that of  TJA1051T/E?

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TomasVaverka
NXP TechSupport
NXP TechSupport

Hi Owen,

There are three versions of the TJA1051 available, the only difference is in pin 5 which is either an enable control input (EN), a VIO supply pin or is not connected:

pastedImage_2.png

The TJA1051T/E is the one with EN pin. The TJA1051T does not have the EN pin and the transition to „CM“ is explained in the attached PCN. 

The EN pin on the TJA1051T/E selects the Off mode. In this mode the entire transceiver is disabled, allowing the MCU to save power when CAN communication is not required. The bus pins are floating in Off mode, making the transceiver invisible to the rest of the network. If you are not using this mode, the TJA1051T/E can be replaced by TJA1051T/CM with pin 5 not connected. 

Best regards,

Tomas

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owenchen1
Contributor I

Hi Tomas,

Thank you very much, very professional answer.

What's the difference between TJA1051T/E,118 and TJA1051T/E/1J?

What do suffixes 118 and 1J mean?

khumphriMandar

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TomasVaverka
NXP TechSupport
NXP TechSupport

Hi Owen,

Technically there is no difference. 

It is used to identify this device as the dual source version of the device, we internally manufacture this device at two FAB locations in order to give our end customer built in dual sourcing.

Best regards,

Tomas

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