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SIT1043QTK
Public Made by Adomby adom
SIT CAN Transceivers, DFN4.5x3-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSIT1043QTK
SIT · CAN Transceivers · DFN4.5x3-14
SIT1043QTK from SIT, in a DFN4.5x3-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | TXD | input | Transmitter data input accepting digital signals from 0V to VIO level to control CAN bus driver output state. |
| 2 | GND | power_in | Ground reference providing return path for all power supplies and signal measurements. |
| 3 | VCC | power_in | 5V bus power supply input with recommended operating range of 4.5V to 5.5V and maximum rating to ±6V. |
| 4 | RXD | output | Receiver data output providing digital signal at 0V or VIO level reflecting CAN bus dominant/recessive state. |
| 5 | VIO | power_in | I/O port power supply input with recommended operating range of 2.8V to 5.5V and maximum rating to ±6V. |
| 6 | EN | input | Enable control input; high level enables transmitter and high-speed receiver, low level enters silent/standby mode. |
| 7 | INH | tri_state | Inhibit output for external regulator control; driven high in normal/standby/sleep-wait modes to enable external supplies, high-impedance state in sleep mode. |
| 8 | ERRN | output | Error indicator output driven low to signal power-up event, wake-up request flag, or local/bus error conditions. |
| 9 | WAKE | input | Local wake-up input detecting valid rising or falling edge transitions at Vth(WAKE) threshold with minimum 5µs pulse duration. |
| 10 | VBAT | power_in | Battery power supply input with recommended operating range of 4.5V to 40V and undervoltage detection threshold of 3V to 4.3V. |
| 11 | SPLIT | output | Bus common-mode stabilization output providing reference bias at approximately VCC/2 in normal and silent modes for CAN differential signal biasing. |
| 12 | CANL | bidirectional | CAN bus low-side input/output with ±58V maximum voltage rating and ±30V common-mode input range in normal modes. |
| 13 | CANH | bidirectional | CAN bus high-side input/output with ±58V maximum voltage rating and ±30V common-mode input range in normal modes. |
| 14 | STBN | input | Standby control input; high level enables normal/silent mode operation, low level initiates low-power standby and sleep modes. |
| 15 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SIT |
| Package | DFN4.5x3-14 |
| Category | Interface |
| Pins | 15 |
CAD (KiCad official)
- Symbol:
SIT1043QTK - Footprint:
Package_DFN_QFN:DFN-14-1EP_3x4.5mm_P0.65mm_EP1.65x4.25mm - 3D model: DFN4.5x3-14 (KiCad packages3D, STEP)
- 3D model files:
sit1043qtk-etched.step/sit1043qtk-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sit1043qtk.step/sit1043qtk.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SIT datasheet (29 pp, sha256
e0f1086f046ad773, retrieved 2026-09-22, tier: lcsc) - 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).