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SIT1145AQT/FD

Mfr. #:
SIT1145AQT/FD
Mfr.:
SIT
Product Type:
CAN FD Transceiver
Series:
SIT1145AQ
Package / Case:
SOP-14
Description:
5 Mbps CAN FD transceiver with SPI control, selective wake-up and FD-passive filtering in a 14-pin SOP package.

Product Attributes

AttributeValue
Data RateUp to 5 Mbps CAN FD data phase
Supply CurrentSleep IBAT: 60 uA typical, 75 uA maximum for -40<Tj<85 C; up to 100 uA maximum for -40<Tj<125 C; VBAT=7 to 18 V, MC=001, CWE=1, CAN offline. Active dominant ICC: 45 mA typical, 65 mA maximum
Operating Temperature-40 to +125 C ambient; -40 to +150 C junction
ProtocolCAN FD up to 5 Mbps; ISO 11898-2:2024; CAN partial networking
Transmitter / Receiver Channels1 driver / 1 receiver
Supply Voltage (VCC)4.5 to 5.5 V
Logic InterfaceVIO=2.85 to 5.5 V; supports 3.3 V and 5 V MCUs
Supply Voltage (VBAT)5.5 to 40 V recommended; DC/AC characterization tables specify VBAT=5.5 to 28 V
Bus Fault VoltageCANH/CANL: -58 to +58 V; not the /1 variant
Receiver Common-Mode Range-12 to +12 V
Operating ModesNormal, standby, sleep, over-temperature and off; local and remote selective wake-up
Propagation DelayTXD-to-RXD low and high transitions: 255 ns maximum at tbit(TXD)=200 ns; typical conditions VBAT=13 V, VCC=VIO=5 V, 25 C, RL=60 ohm
ProtectionTXD dominant timeout, thermal protection and VBAT/VCC/VIO undervoltage protection
Receiver ThresholdActive/listen-only: 0.5 to 0.9 V, 0.7 V typical, at CANH/CANL -12 to +12 V
Configuration InterfaceSPI; minimum clock period 250 ns normal/standby, 1 us sleep (4 MHz / 1 MHz equivalent maximum)
FD-Passive Function/FD variant ignores CAN FD frames while waiting for a valid selective wake-up frame in sleep/standby
Power ManagementINH controls an external regulator; local WAKE input and remote CAN wake-up
QualificationAEC-Q100 qualified, per manufacturer datasheet
Package Details14-pin SOP; body 8.65 x 3.9 mm nominal; lead span 6.0 mm nominal; pitch 1.27 mm; height 1.75 mm maximum

Product Description

SIT1145AQT/FD adds selective wake-up to a CAN FD physical interface. The controller can configure which standard CAN wake-up frames should activate the node, allowing other traffic to pass while that node remains in standby or sleep. Its INH output can also control the external regulator supplying the rest of the node.

The /FD suffix denotes FD-passive filtering during selective wake-up. While waiting for a valid wake-up frame, the device can ignore CAN FD frames so that a sleeping node using an ordinary CAN controller does not generate bus errors in a mixed CAN and CAN FD network.

SPI provides configuration and status access. The documented minimum clock period is 250 ns in normal or standby mode and 1 us in sleep, so host software must account for the slower sleep-state access timing. This SOP-14 order uses the base SIT1145AQ supply limits, including a 5.5 to 40 V battery input and a 2.85 to 5.5 V I/O rail.

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