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TLIN2021-Q1: Part substitution

Nandini Muralidharan
Intellectual 810 points
Part Number: TLIN2021-Q1
Other Parts Discussed in Thread: TLIN2021A-Q1

Hi,

We want to replace MAX13021ASA+ with TLIN2021-Q1.

1. Is there anything we should be aware of while doing this replacement from Electrical point of view?

2. The state diagrams look different between the 2 parts. When Enable is high (device enabled), LIN is high and RXD is high (recessive) and TXD is low (dominant), what will happen to the TI's device state? In case of Maxim device, it is handled by normal/low slope modes (as per attached picture) depending on TXD's state.

  

  • 0
    TI__Mastermind 26826 points

    Nandini,

    Apologies for the delay in responding here.

    Please consider TLIN2021A-Q1 instead of TLIN2021-Q1 as the TLIN2021A-Q1 is the newer component. My answer below applies to both of these components.

    Electrically, these components have the same footprint and fit the same physical layer, so they should be compatible from this perspective. I did notice that the MAX13021 data sheet shows an implementation where INH is connected through the serial diode and commander pull-up resistor to LIN, and this implementation is not recommended (re: ISO 17987-4).

    From a state diagram perspective, you're correct. The TLIN2021A-Q1 fits an application without adjustable slope control, so your EN pin (equivalent to NSLP) brings you into Normal mode from any mode regardless of the state of TXD. The WAKE pin and LIN pin can bring the device from Sleep to Standby..

    The TLIN2021A-Q1 is specifically designed for ISO 17987-4 and SAE J2602-1 internationally-defined LIN applications The MAX13021 data sheet only specifically calls out SAE J2602-1 but I cannot confirm whether it's also compatible with ISO 17987-4 applications.

    Best,

    Danny