TCAN844
The TCAN844 is an electronic component from Texas Instruments. View the full TCAN844 datasheet below including pinout, electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
CAN Transceivers
Overview
The TCAN844-Q1 is a high speed controller area network (CAN) transceiver that is compatible with physical layer requirements of the ISO 11898-2:2024 high-speed CAN specification.
The device includes internal logic level translation via the VIO pin to allow for interfacing the transceiver I/O directly to 3.3V, or 5V logic levels. The transceiver supports a low-power standby mode and wake over CAN which is compatible to the ISO 11898-2:2024 defined wake-up pattern (WUP).
The transceivers also include thermal-shutdown (TSD), TXD-dominant time-out (DTO), supply undervoltage detection, and ±40V bus fault protection. The devices have defined fail-safe behavior in supply undervoltage or floating pin scenarios. These transceivers are not only available in industrystandard SOIC-8 and VSON-8 packages, but also have a space-saving small footprint SOT-23 package option.
Features
- AEC-Q100 Qualified for automotive applications
- -Human body model (HBM) ESD protection: ±12KV for CANH and CANL pins as per AEC Q100-002
- -Charged-device model (CDM) ESD protection: ±500V as per AEC Q100-011
- -IEC 61000-4-2 Contact discharge: ±8KV (unpowered)
- Compatible with ISO 11898-2:2024 physical layer standard
- Functional Safety-Capable
- -Documentation available to aid in functional safety system design
- Support of classical CAN and optimized CAN FD performance at 2 and 5Mbps
- -Short and symmetrical propagation delays for enhanced timing margin
- TCAN844V-Q1 I/O voltage range supports 2.9V to 5.25V
- Support for 12V battery applications
- Receiver common mode input voltage: ±12V
- Protection features:
- -Bus fault protection: ±40V
- -Undervoltage protection
- -TXD-dominant time-out (DTO)
- Data rates down to 9.2kbps
- -Thermal-shutdown protection (TSD)
- Operating modes:
- -Normal mode
- -Low power standby mode supporting remote wake-up request
- Optimized behavior when unpowered
- -Bus and logic pins are high impedance (no load to operating bus or application)
- -Hot-plug capable: power up/down glitch-free operation on bus and RXD output
- 8-Pin SOIC, small footprint SOT-23 and leadless VSON-8 package with improved automated optical inspection (AOI) capability
Applications
- Automotive and transportation
- -Body control modules
- -Automotive gateway
- -Advanced driver assistance system (ADAS)
- -Infotainment
Pin Configuration
TCAN844 Pinout
Package: 8-Pin SOT (DDF), SOIC (D), or VSON (DRB)
| Pin Number | Pin Name | Type | Description |
|---|---|---|---|
| 1 | TXD | Digital Input | CAN transmit data input; integrated pull-up |
| 2 | GND | GND | Ground connection |
| 3 | VCC | Supply | 5V supply voltage |
| 4 | RXD | Digital Output | CAN receive data output, tri-stated when device powered off |
| 5 | NC / VIO | Supply / - | Not internally connected (devices without VIO); I/O supply voltage (devices with suffix 'V') |
| 6 | CANL | Bus IO | Low-level CAN bus input/output line |
| 7 | CANH | Bus IO | High-level CAN bus input/output line |
| 8 | STB | Digital Input | Standby input for mode control; integrated pull-up |
Notes
- Pin 5 function depends on device variant: NC (no connect) for standard TCAN844, or VIO (I/O supply voltage) for TCAN844-V variants.
- VSON package includes a thermal pad (center) that should be connected to internal PCB ground plane using multiple vias for improved thermal performance.
- All three package variants (DDF/SOT, D/SOIC, DRB/VSON) share identical pin numbering and functions.
Electrical Characteristics
Over recommended operating conditions with TJ = -40 °C to 150 °C (unless otherwise noted)
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| Driver Electrical Characteristics | Driver Electrical Characteristics | Driver Electrical Characteristics | Driver Electrical Characteristics | Driver Electrical Characteristics | Driver Electrical Characteristics | Driver Electrical Characteristics |
| V CANH(D) | Bus output voltage (dominant) CANH | V TXD = 0V, R L =50Ω to 65Ω, C L = open, R CM = open | 2.75 | 4.5 | V | |
| V CANL(D) | Bus output voltage (dominant) CANL | V TXD = 0V, R L =50Ω to 65Ω, C L = open, R CM = open | 0.5 | 2.25 | V | |
| V CANH(R) V CANL(R) | Bus output voltage (recessive) | V TXD = V CC , R L = open (no load), R CM = open | 2 | 3 | V | |
| V SYM | Driver symmetry (V O(CANH) + V O(CANL) )/V CC | R TERM = 60Ω, C L = open, C SPLIT = 4.7 nF | 0.9 | 1.1 | V/V | |
| V SYM_DC | DC output symmetry (V CC - V O(CANH) - V O(CANL) ) | R L = 60Ω, C L = open | -400 | 400 | mV | |
| V DIFF(D) | Differential output voltage normal mode | TXD = 0V, 50Ω ≤ R L ≤ 65Ω, C L = open | 1.5 | 3 | V | |
| TXD = 0V, 45Ω ≤ R L ≤ 70Ω, C L = open | 1.4 | 3.3 | V | |||
| Dominant | TXD = 0V, R L = 2240Ω, C L = open | 1.5 | 5 | V | ||
| V DIFF(R) | Differential output voltage normal mode | TXD = V CC or V IO , R L = 60Ω, C L = open | -120 | 12 | mV | |
| V DIFF(R) | Recessive | Normal mode, TXD = V CC or V IO , R L = open, C L = open | -50 | 50 | mV | |
| V CANH(INACT) | Bus output voltage on CANH with bus biasing inactive | V TXD = V CC or V IO , R L = open, C L = open, R CM = open | -0.1 | 0.1 | V | |
| V CANL(INACT) | Bus output voltage on CANL with bus biasing inactive | V TXD = V CC or V IO , R L = open, C L = open, R CM = open | -0.1 | 0.1 | V | |
| V DIFF(INACT) | Bus output voltage on CANH - CANL (recessive) with bus biasing inactive | V TXD = V CC or V IO , R L = open, C L = open, R CM = open | -0.2 | 0.2 | V | |
| I CANH(OS) | Short-circuit steady-state | -3.0V ≤ V CANH ≤ +18.0V, CANL = open, V TXD = 0V | -115 | mA | ||
| I CANL(OS) | output current, Dominant | -3.0V ≤ V CANL ≤ +18.0V, CANH = open, V TXD = 0V | 115 | mA | ||
| I OS_REC | Short-circuit steady-state output current; Recessive | -40V ≤ V BUS ≤ +40V , V BUS = CANH = CANL | -5 | 5 | mA | |
| Receiver Electrical Characteristics | Receiver Electrical Characteristics | Receiver Electrical Characteristics | Receiver Electrical Characteristics | Receiver Electrical Characteristics | Receiver Electrical Characteristics | Receiver Electrical Characteristics |
| V DIFF_RX(D) | Receiver dominant state differential input voltage range, bus biasing active | -12V ≤ V CANL ≤ +12V -12V ≤ V CANH ≤ +12V | 0.9 | 8 | V | |
| V DIFF_RX(R) | Receiver recessive state differential input voltage range, bus biasing active | -12V ≤ V CANL ≤ +12V -12V ≤ V CANH ≤ +12V | -3 | 0.5 | V | |
| V HYS | Hysteresis voltage for input- threshold, normal and selective wake modes | -12V ≤ V CM ≤ 12V | 80 | mV | ||
| V DIFF_RX(D_INA CT) | Receiver dominant state differential input voltage range, bus biasing in-active | -12V ≤ V CANL ≤ +12V -12V ≤ V CANH ≤ +12V | 1.15 | 8 | V | |
| V DIFF_RX(R_INA CT) | Receiver recessive state differential input voltage range, bus biasing in-active | -12V ≤ V CANL ≤ +12V -12V ≤ V CANH ≤ +12V | -3 | 0.4 | V | |
| V CM | Common mode range: | -12 | 12 | V | ||
| I LKG(IOFF) | Power-off (unpowered) bus input leakage current | CANH = CANL = 5V | 5 | μA | ||
| CI powered Normal | Input capacitance to ground (CANH or CANL) | TXD = V CC , V IO = V CC | 20 | pF | ||
| C ID powered Normal | Differential input capacitance | TXD = V CC , V IO = V CC | 10 | pF | ||
| R DIFF | Differential input resistance during passive recessive state | V TXD = V CC or V IO , normal mode: -2.0V ≤ V CANH ≤ +7.0V; -2.0V ≤ V CANL ≤ +7.0V | 18 | 90 | kΩ | |
| R SE_CANH R SE_CANL | Single ended Input resistance during passive recessive state | -2V ≤ V CANH ≤ +7V -2V ≤ V CANL ≤ +7V | 9 | 45 | kΩ |
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1) (2)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| V CC | Supply voltage | -0.3 | 6 | V |
| V IO | Supply voltage I/O level shifter | -0.3 | 6 | V |
| V BUS | CAN Bus I/O voltage (CANH, CANL) | -40 | 40 | V |
| V DIFF | Max differential voltage range between CANH and CANL | -12 | 12 | V |
| V Logic_Input | Logic input terminal voltage | -0.3 | 6 | V |
| V RXD | RXD output terminal voltage range | -0.3 | 6 | V |
| I O(RXD) | RXD output current | -8 | 8 | mA |
| T J | Operating virtual junction temperature range | -40 | 165 | °C |
| T STG | Storage temperature | -65 | 150 | °C |
Recommended Operating Conditions
| MIN | NOM | MAX | UNIT | ||
|---|---|---|---|---|---|
| V CC | Supply voltage | 4.75 | 5 | 5.25 | V |
| V IO | Supply voltage for I/O level shifter | 2.9 | 5.25 | V | |
| I OH(RXD) | RXD terminal high level output current | -2 | mA | ||
| I OL(RXD) | RXD terminal low level output current | 2 | mA | ||
| T J | Operational free-air temperature (see thermal characteristics table) | -40 | 150 | °C | |
| T SDR | Thermal shutdown | 160 | °C | ||
| T SDF | Thermal shutdown release | 150 | °C | ||
| T SD(HYS) | Thermal shutdown hysteresis | 10 | 10 | 10 | °C |
Thermal Information
| TCAN844(V)-Q1 | TCAN844(V)-Q1 | TCAN844(V)-Q1 | UNIT | ||
|---|---|---|---|---|---|
| THERMAL METRIC | THERMAL METRIC | D (SOIC) | DRB (VSON) | DDF (SOT23) | UNIT |
| R θJA | Junction-to-ambient thermal resistance | 130.1 | 67.7 | 180.5 | °C/W |
| R θJC(top) | Junction-to-case (top) thermal resistance | 72.3 | 77.2 | 94.4 | °C/W |
| R θJB | Junction-to-board thermal resistance | 79.5 | 40.3 | 93.3 | °C/W |
Typical Application
The TCAN844(V)-Q1 transceiver can be used in applications with a host controller or FPGA that includes the link layer portion of the CAN protocol. Figure 8-1 shows a typical configuration for 5V controller applications. The bus termination is shown for illustrative purposes.
Package Information
| PART NUMBER | PACKAGE (1) | PACKAGE SIZE (2) |
|---|---|---|
| TCAN844-Q1 | SOIC (D) | 4.9mm x 6mm |
| TCAN844-Q1 | VSON (DRB) | 3mm x 3mm |
| TCAN844-Q1 | SOT-23 (DDF) | 2.9mm x 2.8mm |
- (2) The package size (length × width) is a nominal value and includes pins, where applicable.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| TCAN844-Q1 | Texas Instruments | — |
| TCAN844DRQ1 | Texas Instruments | 8-SOIC (0.154", 3.90mm Width) |
| TCAN844V | Texas Instruments | — |
| TCAN844V-Q1 | Texas Instruments | — |
| TCAN844VDRQ1 | Texas Instruments | 8-SOIC (0.154", 3.90mm Width) |
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