Functional Diagram
Functional Diagram
DRIVER
DRIVER
CAN Bus-Line High
CANH
CANH
CAN Bus-Line Low
CANL
CANL
THERMAL SHUTDOWN
THERMAL
SHUTDOWN
DOMINANT TIMEOUT
DOMINANT
TIMEOUT
Transmit Data Input. Drive TXD high to set the driver in the recessive state. Drive TXD low to set the driver in the dominant state. TXD has an internal pullup to VDD.
TXD
TXD
Standby Mode. A logic-high on STBY pin selects the standby mode. In standby mode, the transceiver is not able to transmit data and the receiver is in low power mode. A logic-low on STBY pin puts the transceiver in normal operating mode. A 39.2kΩ external resistor can be used to connect the STBY pin to ground for slow slew rate.
STBY
STBY
Receive Data Output. RXD is high when CANH and CANL are in the recessive state. RXD is low when CANH and CANL are in the dominant state.
RXD
RXD
Supply Voltage. Bypass VDD to GND with a 0.1µF capacitor.
VDD
V
DD
PROTECTION
PROTECTION
Ground.
GND
GND
Shutdown Input, CMOS/TTL compatible. Drive SHDN high to put MAX33040E/MAX33041E in shutdown. SHDN has an internal pulldown resistor to GND.
SHDN
SHDN
WAKE-UP MODE CONTROL
WAKE-UP
MODE
CONTROL
WAKE-UP FILTER
WAKE-UP
FILTER
PROTECTION
PROTECTION
