TCAN1051HGV: TCAN1051HGVD and TCAN1051HVD

Venkata Narayana

Part Number: TCAN1051HGV

I have supplied Vcc (Pin3) - 5V and VIO (Pin 5) - 3.3V. I am expecting a 3.3V level on RXD pin but receiving 5V which is causing my 3.3V microcontroller to sink more current.

Alternatively I have replaced TCAN1051HGV/ TCAN1051HVD with ATA6564-GAQW1 and it is working perfectly i.e receiving 3.3V level on RXD pin.

Please let me know what could be the reason for this.

over 2 years ago

0 Eric Hackett over 2 years ago

TI__Guru 71792 points

Venkata,

Can you share the topside marking of the TCAN device? The way you've supplied VCC and VIO it should be working as you expect it to, so I want to verify that you have the right part number.

Regards,

Eric Hackett

0 Venkata Narayana over 2 years ago in reply to Eric Hackett

Prodigy 100 points

1051V
02M
ABCP

0 Venkata Narayana over 2 years ago in reply to Venkata Narayana

Prodigy 100 points

Actually it may be

1051V

02M

A8CP

0 Eric Hackett over 2 years ago in reply to Venkata Narayana

TI__Guru 71792 points

Venkata,

Thank you, these are indeed valid TI devices, but in our internal system they are showing up as a hex buffer. Can you take a picture of the device and share it? And can you share a schematic and any waveforms you've captured?

As I said, the way you've described your setup the logic voltages should be translated to 3.3V, but RXD is outputting 5V which would indicate that this is either a non-V device or something else entirely.

Regards,

Eric Hackett

+1 Venkata Narayana over 2 years ago in reply to Eric Hackett

Prodigy 100 points

Hai Eric,

We identified that the devices with issue are purchased from traders but not from Arrow / TI / Mouser. We have tested the parts that are purchased from Mouser and TI and found that they are very working fine.

Hope the issue is with the supplier.

0 Eric Hackett over 2 years ago in reply to Venkata Narayana

TI__Guru 71792 points

Venkata,

Understood, we've had some issues with counterfeit devices lately, so if that's the case please email me directly at e-hackett@ti.com and we can move forward with a different type of support structure.

Regards,

Eric Hackett

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TCAN1051HGV: TCAN1051HGVD and TCAN1051HVD