JAJSO03D November 2011 – April 2022 SN65HVDA100-Q1
PRODUCTION DATA
TXD is the interface to the MCU’s LIN protocol controller or SCI/UART that is used to control the state of the LIN output. When TXD is low, the LIN output is dominant (near ground). When TXD is high, the LIN output is recessive (near battery). The TXD input structure is compatible with microcontrollers with 3.3-V and 5-V I/O. TXD has an internal pulldown resistor. The LIN bus is protected from being stuck dominant through a system failure driving TXD low through the dominant state time-out timer. The TXD pin is pulled down strongly in standby mode after a wake-up event on the NWake pin.