# TCAN1051HDRBTQ1

**Texas Instruments** · CAN ICs · HVSON-8-EP(3x3)

TCAN1051HDRBTQ1 from Texas Instruments, in a HVSON-8-EP(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | TXD | input | CAN transmit data input; LOW for dominant and HIGH for recessive bus states. |
| 2 | GND | power_in | Ground connection; for DRB (VSON) packages the thermal pad may be connected to GND to optimize thermal characteristics. |
| 3 | VCC | power_in | Transceiver 5-V supply voltage; the datasheet recommends operation from 4.5 V to 5.5 V with a 4.7 µF bulk and 0.1 µF bypass capacitor close to the pin. |
| 4 | RXD | output | CAN receive data output, LOW for dominant and HIGH for recessive bus states; receiver output current is limited to ±8 mA (absolute maximum). |
| 5 | NC | unconnected | No connect on H-suffix devices (VIO level-shifting pin is only present on V-suffix devices); may be left floating or tied to an existing net. |
| 6 | CANL | bidirectional | Low-level CAN bus input/output line; bus pins withstand -70 V to 70 V on H-suffix devices. |
| 7 | CANH | bidirectional | High-level CAN bus input/output line; bus pins withstand -70 V to 70 V on H-suffix devices. |
| 8 | S | input | Silent Mode control input, active high. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HVSON-8-EP(3x3) |
| Category | Communication Interface Chip/UART/485/232 |
| Pins | 9 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| ICC 5-V supply current, normal mode (dominant), RL = 60 Ω | ICC |  | 40 | 70 | mA | See 图 7-1, TXD = 0 V, RL = 60 Ω, CL = open, RCM = open, S = 0V | 9 |
| ICC 5-V supply current, normal mode (dominant), RL = 50 Ω | ICC |  | 45 | 80 | mA | See 图 7-1, TXD = 0 V, RL = 50 Ω, CL = open, RCM = open, S = 0V | 9 |
| ICC 5-V supply current, normal mode (dominant, bus fault) | ICC |  |  | 110 | mA | See 图 7-1, TXD = 0 V, S = 0V, CANH = -12V, RL = open, CL = open, RCM = open | 9 |
| ICC 5-V supply current, normal mode (recessive) | ICC |  | 1.5 | 2.5 | mA | See 图 7-1, TXD = VCC, RL = 50 Ω, CL = open, RCM = open, S = 0V | 9 |
| ICC 5-V supply current, silent mode | ICC |  | 1.5 | 2.5 | mA | See 图 7-1, TXD = VCC, RL = 50 Ω, CL = open, RCM = open, S = VCC | 9 |
| I/O supply current, normal and silent modes | IIO |  | 90 | 300 | µA | RXD Floating, TXD = S = 0 or 5.5 V | 9 |
| Rising undervoltage detection on VCC for protected mode | UVVCC | 4.2 |  | 4.4 | V | All devices | 9 |
| Falling undervoltage detection on VCC for protected mode | UVVCC | 3.8 | 4 | 4.25 | V | All devices | 9 |
| S terminal high-level input voltage | VIH | 2 |  |  | V | Devices without the V suffix (5-V only) | 9 |
| S terminal low-level input voltage | VIL |  |  | 0.8 | V | Devices without the V suffix (5-V only) | 9 |
| S terminal high-level input leakage current | IIH |  |  | 30 | µA | S = VCC or VIO = 5.5 V | 9 |
| S terminal low-level input leakage current | IIL | -2 | 0 | 2 | µA | S = 0 V, VCC = VIO = 5.5 V | 9 |
| S terminal unpowered leakage current | Ilkg(OFF) | -1 |  | 1 | µA | S = 5.5 V, VCC = VIO = 0 V | 9 |
| TXD terminal high-level input voltage | VIH | 2 |  |  | V | Devices without the V suffix (5-V only) | 9 |
| TXD terminal low-level input voltage | VIL |  |  | 0.8 | V | Devices without the V suffix (5-V only) | 9 |
| TXD terminal high-level input leakage current | IIH | -2.5 | 0 | 1 | µA | TXD = VCC = VIO = 5.5 V | 9 |
| TXD terminal low-level input leakage current | IIL | -100 | -25 | -7 | µA | TXD = 0 V, VCC = VIO = 5.5 V | 9 |
| TXD terminal unpowered leakage current | Ilkg(OFF) | -1 | 0 | 1 | µA | TXD = 5.5 V, VCC = VIO = 0 V | 9 |
| TXD terminal input capacitance | CI |  |  | 5 | pF | VIN = 0.4 * sin(4E6 * π * t) + 2.5 V | 9 |
| RXD high-level output voltage (5-V only devices) | VOH | 4 | 4.6 |  | V | Devices without the V suffix (5-V only), See 图 7-2, IO = -2 mA | 10 |
| RXD low-level output voltage (5-V only devices) | VOL |  | 0.2 | 0.4 | V | Devices without the V suffix (5-V only), See 图 7-2, IO = +2 mA | 10 |
| RXD unpowered leakage current | Ilkg(OFF) | -1 | 0 | 1 | µA | RXD = 5.5 V, VCC = 0 V, VIO = 0 V | 10 |
| Bus output voltage (dominant) CANH | VO(DOM) | 2.75 |  | 4.5 | V | See 图 8-2 and 图 7-1, TXD = 0 V, S = 0 V, 50 Ω ≤ RL ≤ 65 Ω, CL = open, RCM = open | 10 |
| Bus output voltage (dominant) CANL | VO(DOM) | 0.5 |  | 2.25 | V | See 图 8-2 and 图 7-1, TXD = 0 V, S = 0 V, 50 Ω ≤ RL ≤ 65 Ω, CL = open, RCM = open | 10 |
| Bus output voltage (recessive) CANH and CANL | VO(REC) | 2 |  | 3 | V | See 图 8-2 and 图 7-1, TXD = VCC, VIO = VCC, S = VCC or 0 V (2), RL = open (no load), RCM = open | 10 |
| Differential output voltage (dominant) CANH - CANL, 45 Ω ≤ RL < 50 Ω | VOD(DOM) | 1.4 |  | 3 | V | See 图 8-2 and 图 7-1, TXD = 0 V, S = 0 V, 45 Ω ≤ RL < 50 Ω, CL = open, RCM = open | 10 |
| Differential output voltage (dominant) CANH - CANL, 50 Ω ≤ RL ≤ 65 Ω | VOD(DOM) | 1.5 |  | 3 | V | See 图 8-2 and 图 7-1, TXD = 0 V, S = 0 V, 50 Ω ≤ RL ≤ 65 Ω, CL = open, RCM = open | 10 |
| Differential output voltage (dominant) CANH - CANL, RL = 2240 Ω | VOD(DOM) | 1.5 |  | 5 | V | See 图 8-2 and 图 7-1, TXD = 0 V, S = 0 V, RL = 2240 Ω, CL = open, RCM = open | 10 |
| Differential output voltage (recessive) CANH - CANL, RL = 60 Ω | VOD(REC) | -120 |  | 12 | mV | See 图 8-2 and 图 7-1, TXD = VCC, S = 0 V, RL = 60 Ω, CL = open, RCM = open | 10 |
| Differential output voltage (recessive) CANH - CANL, RL open | VOD(REC) | -50 |  | 50 | mV | See 图 8-2 and 图 7-1, TXD = VCC, S = 0 V, RL = open (no load), CL = open, RCM = open | 10 |
| Transient symmetry (dominant or recessive) | VSYM | 0.9 |  | 1.1 | V/V | See 图 7-1 and 图 9-2, S at 0 V, Rterm = 60 Ω, Csplit = 4.7 nF, CL = open, RCM = open, TXD = 250 kHz, 1 MHz | 10 |
| DC output symmetry (dominant or recessive) | VSYM_DC | -0.4 |  | 0.4 | V | See 图 7-1 and 图 8-2, S = 0 V, RL = 60 Ω, CL = open, RCM = open | 10 |
| Short-circuit steady-state output current, dominant (CANH) | IOS(SS_DOM) | -100 |  |  | mA | See 图 8-2 and 图 7-7, S at 0 V, VCANH = -5 V to 40 V, CANH = open, TXD = 0 V | 10 |
| Short-circuit steady-state output current, dominant (CANL) | IOS(SS_DOM) |  |  | 100 | mA | See 图 8-2 and 图 7-7, S at 0 V, VCANL = -5 V to 40 V, CANH = open, TXD = 0 V | 10 |
| Short-circuit steady-state output current, recessive | IOS(SS_REC) | -5 |  | 5 | mA | See 图 8-2 and 图 7-7, -27 V ≤ VBUS ≤ 32 V, Where VBUS = CANH = CANL, TXD = VCC, all modes | 10 |
| Common mode range, normal mode | VCM | -30 |  | 30 | V | See 图 7-2, 表 8-5 and 表 7-1, S = 0 or VCC or VIO | 11 |
| Positive-going input threshold voltage, all modes (/VCM/ ≤ 20 V) | VIT+ |  |  | 900 | mV | See 图 7-2, 表 8-5 and 表 7-1, S = 0 or VCC or VIO, -20 V ≤ VCM ≤ +20 V | 11 |
| Positive-going input threshold voltage, all modes (/VCM/ ≤ 30 V) | VIT+ |  |  | 1000 | mV | See 图 7-2, 表 8-5 and 表 7-1, S = 0 or VCC or VIO, -30 V ≤ VCM ≤ +30 V | 11 |
| Negative-going input threshold voltage, all modes (/VCM/ ≤ 20 V) | VIT- | 500 |  |  | mV | See 图 7-2, 表 8-5 and 表 7-1, S = 0 or VCC or VIO, -20 V ≤ VCM ≤ +20 V | 11 |
| Negative-going input threshold voltage, all modes (/VCM/ ≤ 30 V) | VIT- | 400 |  |  | mV | See 图 7-2, 表 8-5 and 表 7-1, S = 0 or VCC or VIO, -30 V ≤ VCM ≤ +30 V | 11 |
| Hysteresis voltage (VIT+ - VIT-) | VHYS |  | 120 |  | mV | See 图 7-2, 表 8-5 and 表 7-1, S = 0 or VCC or VIO | 11 |
| Power-off (unpowered) bus input leakage current | Ilkg(IOFF) |  |  | 4.8 | µA | CANH = CANL = 5 V, VCC = VIO = 0 V | 11 |
| Input capacitance to ground (CANH or CANL) | CI |  | 24 | 30 | pF | TXD = VCC, VIO = VCC | 11 |
| Differential input capacitance | CID |  | 12 | 15 | pF | TXD = VCC, VIO = VCC | 11 |
| Differential input resistance | RID | 30 |  | 80 | kΩ | TXD = VCC = VIO = 5 V, S = 0 V, -30 V ≤ VCM ≤ +30 V | 11 |
| Input resistance (CANH or CANL) | RIN | 15 |  | 40 | kΩ |  | 11 |
| Input resistance matching | RIN(M) | -2 |  | 2 | % | VCANH = VCANL = 5 V | 11 |
| Supply voltage VCC, 5-V bus supply (absolute maximum) | VCC | -0.3 |  | 7 | V | All devices | 6 |
| CAN bus I/O voltage range (CANH, CANL) | VBUS | -70 |  | 70 | V | Devices with the H suffix | 6 |
| Max differential voltage between CANH and CANL | V(Diff) | -70 |  | 70 | V | Devices with the H suffix | 6 |
| Logic input terminal voltage range (TXD, S) | V(Logic_Input) | -0.3 |  | 7 | V | All devices, and VI ≤ VIO + 0.3 V | 6 |
| Logic output terminal voltage range (RXD) | V(Logic_Output) | -0.3 |  | 7 | V | and VI ≤ VIO + 0.3 V | 6 |
| RXD (receiver) output current | IO(RXD) | -8 |  | 8 | mA |  | 6 |
| Virtual junction temperature range | TJ | -55 |  | 150 | °C |  | 6 |
| Storage temperature range | TSTG | -65 |  | 150 | °C |  | 6 |
| VCC 5-V bus supply voltage range | VCC | 4.5 |  | 5.5 | V |  | 8 |
| RXD terminal HIGH level output current | IOH(RXD) | -2 |  |  | mA |  | 8 |
| RXD terminal LOW level output current | IOL(RXD) |  |  | 2 | mA |  | 8 |
| Junction-to-air thermal resistance | RθJA |  | 40.2 |  | °C/W | High-K thermal resistance, DRB (VSON) 8 pins | 8 |
| Junction-to-board thermal resistance | RθJB |  | 49.7 |  | °C/W | DRB (VSON) 8 pins | 8 |

## CAD (KiCad official)

- Symbol: `TCAN1051HDRBTQ1`
- Footprint: `Package_SON:HVSON-8-1EP_3x3mm_P0.65mm_EP1.6x2.4mm`
- 3D model: HVSON-8-EP(3x3), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal VQFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `tcan1051hdrbtq1-etched.step` / `tcan1051hdrbtq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tcan1051hdrbtq1.step` / `tcan1051hdrbtq1.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/tcan1051hdrbtq1.pdf) (47 pp, sha256 `be9bd294ba38ee8b`, retrieved 2026-10-31, tier: manufacturer)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tcan1051hdrbtq1-datasheet.pdf)