SLLSFE2 June 2019 SN65HVDA1040B-Q1
PRODUCTION DATA.
The device has undervoltage detection and lockout on the VCC supply. If an undervoltage condition is detected on VCC, the device protects the bus.
The TXD pin is pulled up to VCC to force a recessive input level if the pin floats. The STB is pulled up to VCC to force the device in standby mode (low power) if the pin floats.
The bus pins (CANH, CANL, and SPLIT) all have extremely low leakage currents when the device is unpowered, so it does not load down the bus, but be an ideal passive load to the bus. This is critical, especially if some nodes of the network are unpowered while the rest of the network remains in operation.