TPIC1021DR

Texas Instruments · LIN Transceivers · SOIC-8

TPIC1021DR from Texas Instruments, in a SOIC-8. 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	RXD	output	RXD is an open-drain output reporting the LIN bus state (high for recessive, low for dominant) and goes low on a wake-up request, requiring an external pull-up if the MCU pin has none.
2	EN	input	Enable input selecting Normal mode when high and low-power (sleep) mode when low, with an internal pull-down that keeps the device in low-power mode if the pin floats.
3	NWake	input	High-voltage wake-up input with DC and transient input voltage of -1 V to 40 V through a 33-kΩ series resistor, where a low longer than tNWAKE causes a local wake-up, and an internal pull-up to VSUP.
4	TXD	input	Transmit input controlling the LIN output, where low drives LIN dominant and high drives it recessive; it is compatible with 3.3 V and 5.0 V I/O, has an internal pull-down, and is protected by the dominant state timeout.
5	GND	power_in	Device ground connection; the device operates with a ground shift as long as VSUP does not fall below its minimum operating voltage.
6	LIN	bidirectional	Single-wire LIN bus transmitter and receiver that accepts DC voltages from -40 V to 40 V, with an internal 30-kΩ pull-up and series diode to VSUP for responder applications.
7	VSUP	power_in	Device supply pin, rated for 7 V to 27 V recommended operation (27 V continuous and 40 V transient absolute maximum), connected to the battery through an external reverse-blocking diode.
8	INH	output	Inhibit output that drives an external voltage regulator's inhibit input, with the high-side switch on in Normal mode and off in Low Power mode, and output current limited to 2 mA.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8
Category	Interface
Pins	8

CAD (KiCad official)

Symbol: TPIC1021DR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)
3D model files: tpic1021dr-etched.step / tpic1021dr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tpic1021dr.step / tpic1021dr.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (25 pp, sha256 9ce91d0367264a72, retrieved 2026-10-08, tier: manufacturer)
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

# TPIC1021DR

**Texas Instruments** · LIN Transceivers · SOIC-8

TPIC1021DR from Texas Instruments, in a SOIC-8. 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 | RXD | output | RXD is an open-drain output reporting the LIN bus state (high for recessive, low for dominant) and goes low on a wake-up request, requiring an external pull-up if the MCU pin has none. |
| 2 | EN | input | Enable input selecting Normal mode when high and low-power (sleep) mode when low, with an internal pull-down that keeps the device in low-power mode if the pin floats. |
| 3 | NWake | input | High-voltage wake-up input with DC and transient input voltage of -1 V to 40 V through a 33-kΩ series resistor, where a low longer than tNWAKE causes a local wake-up, and an internal pull-up to VSUP. |
| 4 | TXD | input | Transmit input controlling the LIN output, where low drives LIN dominant and high drives it recessive; it is compatible with 3.3 V and 5.0 V I/O, has an internal pull-down, and is protected by the dominant state timeout. |
| 5 | GND | power_in | Device ground connection; the device operates with a ground shift as long as VSUP does not fall below its minimum operating voltage. |
| 6 | LIN | bidirectional | Single-wire LIN bus transmitter and receiver that accepts DC voltages from -40 V to 40 V, with an internal 30-kΩ pull-up and series diode to VSUP for responder applications. |
| 7 | VSUP | power_in | Device supply pin, rated for 7 V to 27 V recommended operation (27 V continuous and 40 V transient absolute maximum), connected to the battery through an external reverse-blocking diode. |
| 8 | INH | output | Inhibit output that drives an external voltage regulator's inhibit input, with the high-side switch on in Normal mode and off in Low Power mode, and output current limited to 2 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Interface |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TPIC1021DR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `tpic1021dr-etched.step` / `tpic1021dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpic1021dr.step` / `tpic1021dr.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/tpic1021.pdf) (25 pp, sha256 `9ce91d0367264a72`, retrieved 2026-10-08, tier: manufacturer)
- **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/tpic1021dr-datasheet.pdf)