component

SIT1027QT

Public Made by Adom

by adom

SIT LIN Transceivers, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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SIT1027QT

SIT · LIN Transceivers · SOP-8

SIT1027QT 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 RXD output Receive data output to the MCU (open-drain, needs external pull-up). Reports the state of the LIN bus; also driven active LOW after a remote wake-up event to interrupt the microcontroller.
2 SLP_N input Sleep control input (active LOW). Controls the inhibit output and mode transitions: hold HIGH for tgotonorm to enter Normal mode, hold LOW for tgotosleep to enter Sleep mode. Also resets the wake-up source flag on TXD and wake-up request on RXD. Has an internal pull-down so a floating pin forces Sleep mode.
3 n.c. unconnected Not connected. Leave open (or tie to a convenient net per PCB preference).
4 TXD input Transmit data input from the MCU. LOW drives the LIN bus to the dominant state, HIGH releases it to the recessive state. Has an internal pull-down to GND so an unconnected TXD forces a defined level.
5 GND power_in Ground reference for the device.
6 LIN bidirectional LIN bus line I/O (single-wire, up to 20 kBd, 12V nominal). Includes an integrated ~30 kΩ pull-up to VBAT for slave-node operation; when used as a master node, an additional external pull-up (typically 1 kΩ) to VBAT through a series diode is required.
7 VBAT power_in Battery supply voltage input. Operating range 5.5V to 27V (12V automotive nominal). Undervoltage detection disables the driver below Vth(VBATL)L and re-enables above Vth(VBATL)H.
8 n.c. unconnected Not connected.

Key specifications

Parameter Value
Manufacturer SIT
Package SOP-8
Category Interface
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • SIT1027QT
  • SIT1027QTK

CAD (KiCad official)

  • Symbol: SIT1027QT
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: sit1027qt-etched.step / sit1027qt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sit1027qt.step / sit1027qt.glb are the bare package body.

Provenance

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

  • Datasheet: SIT datasheet (20 pp, sha256 554c411d0b8bbe3b, 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).

Datasheet PDF