Part Review Datasheet Check
Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.
Thought for 6 sec
I’ll inspect the part metadata, look for an official datasheet if needed, update the Datasheet property, then compare symbol/footprint/pins against the datasheet and summarize any issues.
Worked for 6 mins 19 sec
Created a project doc
Reviewed the part and created the detailed report here: TJA1044GT/3Z Part Review.
Key findings: the official NXP datasheet URL is
https://www.nxp.com/docs/en/data-sheet/TJA1044.pdf; the existing Datasheet URL was already populated, so I did not change it. The main mismatches are pin 5 is incorrectly modeled as N.C. instead of VIO for TJA1044GT/3Z, and Package or Case Code is TO instead of SO8 / SOT96-1. The SOIC127P600X175-8N footprint appears generally compatible with the official SO8/SOT96-1 package.Fix mismatches and verify
Fix pin mismatch
Correct package metadata
Set pin types
Run validation
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TJA1044GT/3Z Part Review
Date: 2026-07-20
Project: TJA1044GT_3Z
Part UID: dfa4570b-129f-4853-b892-4c3d09934ead
Sources
- Current Flux project metadata, schematic terminals, and PCB footprint inspected from the project.
- Datasheet URL currently set on the part:
https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/b9a2fa76f5bdd86e2658ad6f6f893e6873e191c0f528ee85064a1b11802a6b0c.pdf - Official NXP datasheet found:
https://www.nxp.com/docs/en/data-sheet/TJA1044.pdf - Official NXP product page found:
https://www.nxp.com/products/interfaces/can-transceivers/3-3-v-5-v-io-can-transceivers/high-speed-can-transceiver-with-standby-mode-mantis-family%3ATJA1044
The Datasheet URL property was already populated, so it was not changed under the requested condition. The official NXP URL above should be preferred if the part record should point directly to the manufacturer-hosted datasheet.
Current Part Information Found in Flux
Table
| Field | Current value | Review |
|---|---|---|
| Manufacturer Part Number | TJA1044GT/3Z | Matches NXP orderable suffix for the TJA1044GT/3 SO8 VIO variant. |
| Manufacturer Name | NXP | Acceptable; official manufacturer is NXP Semiconductors. |
| Description | NXP - TJA1044GT/3Z - CAN TRANSCEIVER, 5MBPS, -40 TO 150DEG C | Broadly matches datasheet. |
| Part Type | Integrated Circuits | Acceptable, though Interface / CAN Transceiver would be more specific. |
| Package or Case Code | TO | Mismatch; official package is SO8 / SOT96-1, not TO. |
| Pin / pad count | 8 | Matches datasheet. |
| Footprint asset | SOIC127P600X175-8N.kicad_mod | Generally compatible with SO8 / SOT96-1. |
| 3D model asset | TJA1044GT_3Z.stp | Present; not mechanically validated beyond association. |
Datasheet Key Specifications
Table
| Spec | Datasheet value |
|---|---|
| Function | High-speed CAN transceiver with Standby mode |
| CAN FD support | All variants other than TJA1044T support CAN FD |
| Maximum CAN FD data rate | Timing guaranteed up to 5 Mbit/s |
| VCC supply | 4.5 V to 5.5 V |
| VIO supply for /3 variant | 2.91 V to 5.5 V |
| Logic interface | VIO pin adjusts TXD, RXD, and STB levels for 3.3 V to 5 V MCU I/O |
| Operating / virtual junction temperature | -40 °C to +150 °C |
| CANH/CANL limiting voltage | -42 V to +42 V |
| CANH-CANL differential limiting voltage | -27 V to +27 V |
| IEC 61000-4-2 ESD on CANH/CANL | ±8 kV |
| HBM ESD on any pin | ±4 kV |
| HBM ESD on CANH/CANL | ±8 kV |
| Package | SO8, plastic small outline package, 8 leads, 3.9 mm body width, SOT96-1 |
Pin Cross-Check
Official TJA1044GT/3 SO8-with-VIO pinout from the NXP datasheet:
Table
| Pin | Datasheet name | Datasheet type | Datasheet description | Current Flux terminal | Result |
|---|---|---|---|---|---|
| 1 | TXD | I | Transmit data input | TXD | Match, but Flux pin type is Unspecified. |
| 2 | GND | G | Ground supply | GND | Match, but Flux pin type is Unspecified. |
| 3 | VCC | P | Supply voltage | VCC | Match, but Flux pin type is Unspecified. |
| 4 | RXD | O | Receive data output; reads out data from bus lines | RXD | Match, but Flux pin type is Unspecified. |
| 5 | VIO | P | Supply voltage for I/O level adapter on TJA1044BT(K) and TJA1044GT(K)/3 variants | N.C. | Mismatch. Current symbol uses the non-/3 variant pin 5. |
| 6 | CANL | AIO | LOW-level CAN bus line | CANL | Match, but Flux pin type is Unspecified. |
| 7 | CANH | AIO | HIGH-level CAN bus line | CANH | Match, but Flux pin type is Unspecified. |
| 8 | STB | I | Standby mode control input | STB | Match, but Flux pin type is Unspecified. |
Footprint Cross-Check
Current footprint payload is
SOIC127P600X175-8N:- 8 SMD pads.
- Pad pitch: 1.27 mm.
- Pad size: 0.70 mm x 1.55 mm.
- Pad centers: x = ±2.725 mm; y = ±1.905, ±0.635 mm.
- Body/fab outline approximately 3.9 mm x 4.9 mm.
- Courtyard approximately 7.5 mm x 5.5 mm.
Official datasheet package:
- SO8 / SOT96-1.
- Plastic small outline package, 8 leads, body width 3.9 mm.
- JEDEC reference MS-012.
- Pitch 1.27 mm.
- Max height 1.75 mm.
Result: the footprint geometry appears generally compatible with SO8 / SOT96-1. The main footprint-related issue is pin mapping/name inheritance from the symbol: pad 5 is currently associated with
N.C. in the part instead of VIO.Mismatches and Recommended Fixes
-
Critical symbol mismatch: pin 5
- Current: pin 5 =
N.C. - Correct for TJA1044GT/3Z: pin 5 =
VIO - Recommended fix: rename terminal/pad 5 to
VIO, set pin type to Power In / P, and add the description “supply voltage for I/O level adapter”.
- Current: pin 5 =
-
Package metadata mismatch
- Current:
Package or Case Code = TO - Correct:
SO8,SOIC-8, orSOT96-1 - Recommended fix: change package metadata to
SO8 / SOT96-1.
- Current:
-
Pin type metadata incomplete
- Current: all terminal Pin Type properties are
Unspecified. - Recommended fix: set TXD and STB as inputs, RXD as output, VCC and VIO as power pins, GND as ground, CANH/CANL as bidirectional/analog I/O.
- Current: all terminal Pin Type properties are
-
Datasheet URL preference
- Current Datasheet URL exists, but it points to a Flux-hosted uploaded PDF.
- Official URL found:
https://www.nxp.com/docs/en/data-sheet/TJA1044.pdf - Recommended fix: if policy allows replacing an existing uploaded datasheet URL, set the Datasheet URL to the official NXP URL.
Overall Verdict
The part is close, but not safe to use as-is for the exact MPN
TJA1044GT/3Z because pin 5 is modeled as N.C. instead of the required VIO supply pin. The footprint appears suitable for SO8 / SOT96-1, while the package metadata should be corrected from TO to SO8 / SOT96-1.Sources
Current Part Information Found in Flux
Datasheet Key Specifications
Pin Cross-Check
Footprint Cross-Check
Mismatches and Recommended Fixes
Overall Verdict
