LTC4331 datasheet(8/22 Pages) AD

8 / 22 page

LT3960

Rev. B

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PIN FUNCTIONS

CANSDAL (Pin 1): Low Level CAN Bus Line. Carries the

I2C data bus.

CANSDAH (Pin 2): High Level CAN Bus Line. Carries the

I2C data bus.

CANSCLH (Pin 4): High Level CAN Bus Line. Carries the

I2C clock bus.

CANSCLL (Pin 5): Low Level CAN Bus Line. Carries the

I2C clock bus.

GND (Pin 3 and Exposed Pad): Ground. Solder the

exposed pad and pin directly to the ground plane.

VIN (Pin 6): Input Voltage Supply. This pin is the power

supply input to the LDO. It must be locally bypassed with

a 1µF filter capacitor to GND as close to the pin as possi-

ble. If the LDO function is unused, tie VIN to VCC.

EN/MODE (Pin 7): MODE/Shutdown pin. Tie above 2.5V

to select master mode, float pin to select slave mode, or

pull this pin to ground for low-power shutdown mode.

VCC (Pin 8): Low Dropout Regulator Output and Device

Power Supply Input. Bypass this pin with a 2.2µF or

greater capacitor to ground. Any bypass capacitors must

be located as close to the pin as possible.

SCL (Pin 9): Clock Input or Output Pin for the I2C Serial

Port. When EN/MODE is 2.5V or above, the SCL pin is

an input for the master clock. When EN/MODE is float-

ing, the SCL pin is an output for data received on the

CANSCLH/L pins.

SDA (Pin 10): Data Input and Output Pin for the I2C

Serial Port.

LTC4331 数据表(PDF) 8 Page - Analog Devices