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TCAN1042-Q1: TCAN1042Q1 VS TCAN1042VQ1 Different

user4370495
Expert 1155 points
Part Number: TCAN1042-Q1
Other Parts Discussed in Thread: TCAN1042V-Q1,

Dear  TI:

I Read Tcan1042-Q1 Datasheet ,"I/O Voltage Range Supports 3.3 V and 5 V MCUs". this means tcan1042-q1  (not  tcan1042v-q1) can also be used in 3.3V  MCU or not?

TCAN1042-Q1 (Devices without the "V" Suffix):: The digital inputs have TTL input thresholds and are therefore 5 V and 3.3 V compatible.
TCAN1042V-Q1 (Devices with the "V" Suffix): This supply is used to set the CMOS input thresholds of the TXD and pins and the RXD high level output voltage.

This means  TCAN1042V-Q1 Input voltage and output voltage Range higher than tcan1042-Q1. But tcan1042-q1 can  compatible 3.3v mcu systems.?
if i use tcan1042-q1 in 3.3v mcu systems, any risks or not ?
thanks a lot.

  • 0
    TI__Guru 74252 points

    User,

    The TCAN1042 will accept a 0-3.3V peak-to-peak waveform as an input, but the output will be 0-5V due to the receiver comparator being pulled up to VCC, which is 5V. So no, the non-V device will not work in a 3.3V system, unless the inputs of the controller can accept a 0-5V waveform without being damaged.

    Regards,