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sit1050qt
Public Unreviewedby Ray
SIT CAN Controllers, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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markdownSIT1050QT
SIT · CAN Controllers · SOP-8
SIT1050QT from SIT, in a SOP-8. 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 | Transmit data input from the CAN controller. Internally pulled to VCC via ~30 µA; drives the bus dominant when low. VIH ≥ 2 V, VIL ≤ 0.8 V, tolerant to VCC+0.3 V. |
| 2 | GND | power_in | Ground supply reference (0 V). The DFN3*3-8 package exposed center pad is internally connected to this pin and should be soldered to board ground for improved thermal performance. |
| 3 | VCC | power_in | 5 V supply voltage (operating range 4.75 V to 5.25 V; absolute maximum -0.3 V to +6 V). Provides bias for the driver, receiver and reference-voltage generator. |
| 4 | RXD | output | Receive data output to the CAN controller; reports the state of the differential bus (low = dominant, high = recessive). Push-pull output: VOH ≥ 4 V at IO = -2 mA, VOL ≤ 0.4 V at IO = 2 mA. |
| 5 | Vref | output | Reference voltage output nominally at 0.5·VCC (typ. 2.5 V, min 2 V, max 3 V). May be used as an external bias reference; sourced from an internal ~200 µA regulator. |
| 6 | CANL | bidirectional | Low-level CAN bus line (differential pair with CANH). DC-tolerant from -40 V to +40 V, common-mode range ±12 V; ~25 kΩ termination to internal 0.5·VCC bias, short-circuit protected. |
| 7 | CANH | bidirectional | High-level CAN bus line (differential pair with CANL). DC-tolerant from -40 V to +40 V, common-mode range ±12 V; ~25 kΩ termination to internal 0.5·VCC bias, short-circuit protected. |
| 8 | S | input | Silent-mode control input. Tie low (or leave floating; internal ~1 µA pull-down) for normal high-speed operation; drive high to disable the transmitter and place the device in silent (listen-only) mode. Enable time from silent to dominant is typically 1 µs. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SIT |
| Package | SOP-8 |
| Category | Interface |
| Pins | 8 |
Ordering variants
SIT1050QTSIT1050QTK
CAD (KiCad official)
- Symbol:
SIT1050QT - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SIT datasheet (None pp, sha256
d6dabfb2bbbf5785, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).