# THVD1406DR

**TEXAS INSTRUMENTS** · Global Sourcing Parts · SOIC-8

THVD1406DR 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 | R | output | Receiver data output; recommended receiver output current is -8 mA to 8 mA. |
| 2 | RE | input | Receiver enable, active low, with an internal 2-MΩ pull-up; logic input VIH is 2 V min and VIL is 0.8 V max. |
| 3 | SHDN | input | Shutdown enable, active low, with an internal 2-MΩ pull-up; logic input VIH is 2 V min and VIL is 0.8 V max. |
| 4 | D | input | Driver data input; logic input VIH is 2 V min and VIL is 0.8 V max. |
| 5 | GND | power_in | Device ground. |
| 6 | A | bidirectional | Bus I/O port A, complementary to B; bus terminals withstand ±16-V bus fault and recommended input voltage is -7 V to 12 V. |
| 7 | B | bidirectional | Bus I/O port B, complementary to A; bus terminals withstand ±16-V bus fault and recommended input voltage is -7 V to 12 V. |
| 8 | VCC | power_in | Supply pin, 3-V to 5.5-V supply for the device; recommended VCC is 3 V to 5.5 V and absolute maximum is 7 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TEXAS INSTRUMENTS |
| Package | SOIC-8 |
| Category | Global Sourcing Parts |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage (absolute maximum) | VCC | -0.5 |  | 7 | V |  | 4 |
| Input voltage at any logic pin (D, SHDN or RE) | VL | -0.3 |  | 5.7 | V |  | 4 |
| Voltage at A or B inputs | VA, VB | -16 |  | 16 | V |  | 4 |
| Receiver output current | IO | -24 |  | 24 | mA |  | 4 |
| Junction temperature | TJ |  |  | 170 | °C |  | 4 |
| Storage temperature | TSTG | -65 |  | 150 | °C |  | 4 |
| Supply voltage | VCC | 3 | 5 | 5.5 | V |  | 4 |
| Differential input voltage | VID | -12 |  | 12 | V |  | 4 |
| Input voltage at any bus terminal | VI | -7 |  | 12 | V |  | 4 |
| High-level input voltage (D, SHDN, RE) | VIH | 2 |  | 5.5 | V |  | 4 |
| Low-level input voltage (D, SHDN, RE) | VIL | 0 |  | 0.8 | V |  | 4 |
| Driver output current | IO | -60 |  | 60 | mA | Driver | 4 |
| Receiver output current | IO | -8 |  | 8 | mA | Receiver | 4 |
| Differential load resistance | RL | 54 | 60 |  | Ω |  | 4 |
| Signaling rate THVD1406 | 1/tUI |  |  | 500 | kbps | THVD1406 | 4 |
| Junction temperature | TJ | -40 |  | 150 | °C |  | 4 |
| Operating ambient temperature | TA | -40 |  | 125 | °C |  | 4 |
| Thermal shutdown threshold (temperature rising) | TSHDN | 150 |  | 170 | °C |  | 4 |
| Driver differential-output voltage magnitude | /VOD/ | 1.5 |  | 2 | V | RL = 60 Ω, -7 V ≤ Vtest ≤ 12 V | 6 |
| Driver differential-output voltage magnitude | /VOD/ | 2.1 |  | 3 | V | RL = 60 Ω, -7 V ≤ Vtest ≤ 12 V, 4.5 V ≤ VCC ≤ 5.5 V | 6 |
| Driver differential-output voltage magnitude | /VOD/ | 2 |  | 2.5 | V | RL = 100 Ω, CL = 50 pF, see Figure 7-2 | 6 |
| Change in magnitude of driver differential-output voltage | Δ/VOD/ | -50 |  | 50 | mV | RL = 54 Ω or 100 Ω, CL = 50 pF, see Figure 7-2 | 6 |
| Steady-state common-mode output voltage | VOC(SS) | 1 |  | 3 | V |  | 6 |
| Change in differential driver common-mode output voltage | ΔVOC | -50 |  | 50 | mV |  | 6 |
| Peak-to-peak driver common-mode output voltage | VOC(PP) |  |  | 200 | mV | RL = 54 Ω or 100 Ω, CL = 50 pF, VCC = 3.3 V, see Figure 7-2 | 6 |
| Driver short-circuit output current | /IOS/ | -250 |  | 250 | mA | -7 V ≤ [VA or VB] ≤ 12 V, or A pin shorted to B pin | 6 |
| Bus input current (driver disabled) | II | 75 |  | 100 | µA | VCC = 0 V or 5.5 V, VI = 12 V | 6 |
| Bus input current (driver disabled) | II | -97 |  | -70 | µA | VCC = 0 V or 5.5 V, VI = -7 V | 6 |
| Positive-going receiver differential-input voltage threshold | VIT+ | -70 |  | -45 | mV | -7 V ≤ VCM ≤ 12 V | 6 |
| Negative-going receiver differential-input voltage threshold | VIT- | -200 |  | -150 | mV |  | 6 |
| Receiver differential-input voltage threshold hysteresis | VHYS | 30 |  | 50 | mV | VIT+ - VIT- | 6 |
| Receiver low-level output voltage | VOL | 0.2 |  | 0.4 | V | IOL = 4 mA | 6 |
| Receiver high-impedance output current | IOZ | -1 |  | 1 | µA | VO = 0 V or VCC, RE = VCC | 6 |
| Input current (D, SHDN, RE) | IIN | -5 |  | 5 | µA |  | 6 |
| Supply current (quiescent), driver and receiver enabled | ICC |  | 1500 | 1800 | µA | VCC = 3.6 V, SHDN = VCC, RE = 0, D = 0, no load | 6 |
| Supply current (quiescent), driver enabled, receiver disabled | ICC |  | 1000 | 1500 | µA | VCC = 3.6 V, SHDN = VCC, RE = VCC, D = 0, no load | 6 |
| Supply current (quiescent), driver and receiver disabled | ICC |  | 2 | 4.1 | µA | VCC = 3.6 V, SHDN = 0, no load | 6 |
| Supply current (quiescent), driver and receiver enabled | ICC |  | 1700 | 3000 | µA | VCC = 5.5 V, SHDN = VCC, RE = 0, D = 0, no load | 6 |
| Supply current (quiescent), driver enabled, receiver disabled | ICC |  | 1300 | 2500 | µA | VCC = 5.5 V, SHDN = VCC, RE = VCC, D = 0, no load | 6 |
| Supply current (quiescent), driver and receiver disabled | ICC |  | 3 | 6.9 | µA | VCC = 5.5 V, SHDN = 0, no load | 6 |
| Driver differential output rise and fall times | tr, tf | 200 | 300 | 600 | ns | See Figure 7-3 | 7 |
| Driver propagation delay | tPHL, tPLH |  | 275 | 500 | ns |  | 7 |
| Driver pulse skew | tSK(P) |  |  | 10 | ns | /tPHL - tPLH/ | 7 |
| Driver disable time | tPHZ, tPLZ |  | 80 | 200 | ns | See Figure 7-4 and Figure 7-5 | 7 |
| Driver enable time | tPZH, tPZL |  | 200 | 650 | ns | Receiver enabled | 7 |
| Driver enable time | tPZH, tPZL |  | 5 | 10 | µs | Receiver disabled | 7 |
| Driver active time in auto-direction mode | tdevice_auto-dir | 4 | 8 | 14 | µs | SHDN high and D switches from low to high, Figure 7-8 | 7 |
| Receiver output rise and fall times | tr, tf |  | 6 | 20 | ns | See Figure 7-6 | 7 |
| Receiver propagation delay time | tPHL, tPLH |  | 40 | 110 | ns |  | 7 |
| Receiver pulse skew | tSK(P) |  |  | 7 | ns | /tPHL - tPLH/ | 7 |
| Receiver disable time | tPHZ, tPLZ |  | 15 | 60 | ns | See Figure 7-7 | 7 |
| Receiver enable time | tPZL, tPZH |  | 80 | 150 | ns | Driver enabled, See Figure 7-7 | 7 |
| Junction-to-ambient thermal resistance (SOIC, D) | RθJA |  | 126 |  | °C/W |  | 5 |
| Junction-to-case (top) thermal resistance (SOIC, D) | RθJC(top) |  | 66.2 |  | °C/W |  | 5 |
| Junction-to-board thermal resistance (SOIC, D) | RθJB |  | 69.4 |  | °C/W |  | 5 |
| Junction-to-top characterization parameter (SOIC, D) | ψJT |  | 18.7 |  | °C/W |  | 5 |
| Junction-to-board characterization parameter (SOIC, D) | ψJB |  | 68.7 |  | °C/W |  | 5 |

## CAD (KiCad official)

- Symbol: `THVD1406DR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `thvd1406dr-etched.step` / `thvd1406dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `thvd1406dr.step` / `thvd1406dr.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/thvd1406.pdf) (32 pp, sha256 `8bfffd15766380a5`, retrieved 2026-10-21, 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/thvd1406dr-datasheet.pdf)