TCAN1043A-Q1 Automotive Low-Power Fault Protected CAN FD TransceiverWith Sleep Mode
1 Features
- AEC Q100 (Grade 1) Qualified for automotive applications
- Functional Safety-Capable
- Meets the requirements of ISO 11898-2:2016
- Wide input operational voltage range
- Supports classic CAN and CAN FD up to 8 Mbps (TCAN1043A-Q1) or 5 Mbps (TCAN1043AT-Q1)
- VIO level shifting supports: 1.7 V to 5.5 V
- Operating modes:
- Normal mode
- Silent mode
- Standby mode
- Low-power sleep mode
High-voltage INH output for system power control
Local wake-up support via the WAKE pin
- Sleep Wake Error (SWE) timer enables safe transition from standby mode to sleep mode in the event of a system power failure or software fault
- Allows for extended power-up time
- Defined behavior when unpowered
- Bus and IO terminals are high impedance (no load to operating bus or application)
- Protection features:
- ±58-V CAN bus fault tolerant
- Load dump support on VSUP
- IEC ESD protection
Under-voltage protection
- Thermal shutdown protection
- TXD dominant state timeout (TXD DTO)
- Available in 14-pin leaded (SOT and SOIC) packages and leadless (VSON) package with wettable flanks for improved automated optical inspection (AOI) capability
3 Description
The TCAN1043A-Q1 is a high-speed Controller Area Network (CAN) transceiver that meets the physical layer requirements of the ISO 11898-2:2016 high-speed CAN specification. The device supports both classical CAN and CAN FD data rates up to 8 megabits per second (Mbps) (TCAN1043A-Q1) or 5 Mbps (TCAN1043AT-Q1).
The TCAN1043A-Q1 allows for system-level reductions in battery current consumption by selectively enabling the various power supplies that may be present on a system via the INH output pin. This allows a low-current sleep state in which power is gated to all system components except for the TCAN1043A-Q1, while monitoring the CAN bus. When a wake-up event is detected, the TCAN1043A-Q1 initiates system start-up by driving INH high.
The TCAN1043A-Q1 features an SWE timer that enables a safe transition to Sleep mode after 4 minutes (tINACTIVE) of inactivity in Standby mode. This makes sure the device is transitioned to low-power Sleep mode if the MCU fails to transition the device to Normal mode.
| PART NUMBER | PACKAGE(1) | BODY SIZE (NOM) |
|---|---|---|
| TCAN1043A-Q1 | SOT (DYY) | 4.20 mm x 2.00 mm |
| SOIC (D) | 8.65 mm x 3. 90 mm | |
| VSON (DMT) | 4.50 mm x 3.00 mm | |
| TCAN1043AT-Q1 | SOIC (D) | 8.65 mm x 3. 90 mm |
| VSON (DMT) | 4.50 mm x 3.00 mm |
Simplified Schematic4 Revision History
Changes from Revision D (January 2023) to Revision E (March 2023)
- Deleted text from the first paragraph of #GUID-7FB8DAB8-F4EF-48A9-AA5B-0905C4042B16/TITLE-SLLSFD1T5013362-24 Go
Changes from Revision C (April 2022) to Revision D (January 2023)
- Added TCAN1043AT-Q1 to the Package Information table.Go
- Added part number TCAN1043AT-Q1 to the data sheet Specifications Go
- Added minimum specification to the tSILENCE parameter in the Device Characteristics sectionGo
- Changed Figure 7-6 to remove the nSTB signal from the TX block.Go
- Added a link to Table 8-1 in the nFAULT Pin sectionGo
- Changed Table 8-1 to add a comment in the Power-up, Wake-up Source Recognition and TXDRXD event flags in the Internal and External Fault Indicators sectionGo
- Changed Figure 8-4 to accurately reflect the behavior of the SWE timer. Added notes 4 and 5 showing the transition from silent mode to sleep mode due to SWE timer timeout.Go
- Added Figure 8-5 to explain the steps to transition from sleep mode to silent or normal mode when sleep mode is entered due to SWE timer timeout.Go
- Added a paragraph describing the steps needed to enter Normal or Silent mode directly from Sleep mode using EN and nSTB pins in the #GUID-289C7485-2894-4BA6-BBC8-005BC6B50C15/TITLE-SLLSFD1T5013362-88 section. Go
- Changed Figure 8-8 to indicate tINH_SLP_STB delay on the INH waveformGo
- Changed Figure 8-9 to indicate tINH_SLP_STB delay on the INH waveformGo
- Changed Figure 8-10 to convert '&' to 'and', clarified that RXD pin is in High Impedance in the 'CAN Off state'Go
- Added Note 2 to Figure 8-10 Go
- Changed text From: "The CAN Transceiver blocks its transmitter and receiver" To: "The CAN transceiver blocks its transmitter" in the CAN Active sectionGo
Changes from Revision B (December 2021) to Revision C (April 2022)
- Deleted Product Preview from the SOT (DYY) package in the Package Information table.Go
- Changed the INH pin transistor connection in Figure 8-1 Go
Changes from Revision A (October 2021) to Revision B (December 2021)
- Deleted Product Preview from the SOIC (D) package in the Package Information table.Go
Changes from Revision * (January 2021) to Revision A (October 2021)
- Changed from Advanced Information to: Production dataGo
5 Pin Configuration and Functions
(Top View)
(Top View)
| PINS | TYPE (1) | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| TXD | 1 | I | CAN transmit data input, integrated pull-up |
| GND | 2 | GND | Ground connection |
| VCC | 3 | P | 5 V transceiver supply |
| RXD | 4 | O | CAN receive data output, tri-state when VIO < UVIO |
| VIO | 5 | P | I/O supply voltage |
| EN | 6 | I | Enable input for mode control, integrated pull-down |
| INH | 7 | O | Inhibit pin to control system voltage regulators and supplies, high-voltage |
| nFAULT | 8 | O | Fault output, inverted logic |
| WAKE | 9 | I | Local WAKE input terminal, high voltage |
| VSUP | 10 | P | High-voltage supply from battery |
| NC | 11 | NC | No connect, internally not connected |
| CANL | 12 | I/O | Low-level CAN bus input/output line |
| CANH | 13 | I/O | High-level CAN bus input/output line |
| nSTB | 14 | I | Standby mode control input, integrated pull-down |
| Thermal Pad | — | Connect the thermal pad to the printed circuit board (PCB) ground plane for thermal relief | |
