component
ISO1412DW
Public Made by Adomby adom
Texas Instruments Isolated RS-485/422 Transceivers, SOIC-16-300mil. Pinout cross-checked by two models against the datasheet, 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
markdownISO1412DW
Texas Instruments · Isolated RS-485/422 Transceivers · SOIC-16-300mil
ISO1412DW from Texas Instruments, in a SOIC-16-300mil. 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 | VCC1 | power_in | Logic-side (side 1) power supply, specified from 1.71 V to 5.5 V. |
| 2 | GND1 | power_in | Logic-side ground; pin 2 and pin 8 must both be connected to GND1. |
| 3 | R | output | Receiver output on the logic side; goes high-impedance when RE is high or open. Recommended receiver output current is limited to ±4 mA. |
| 4 | RE | input | Receiver enable; a low level enables the receiver output, while a high level or an open pin disables it (high-impedance). |
| 5 | DE | input | Driver enable; a high level enables the driver outputs, while a low level or an open pin disables them (high-impedance). |
| 6 | D | input | Driver data input on the logic side; high-level input must be at least 0.7 × VCC1 and low-level input at most 0.3 × VCC1. |
| 7 | NC | unconnected | No internal connection; device function is unaffected if this pin is tied to a supply or ground on the PCB. |
| 8 | GND1 | power_in | Logic-side ground; must be connected to GND1 together with pin 2. |
| 9 | GND2 | power_in | Bus-side ground; must be connected to GND2 together with pin 15. |
| 10 | NC | unconnected | No internal connection; device function is unaffected if this pin is tied to a supply or ground on the PCB. |
| 11 | Y | output | Driver non-inverting bus output of the full-duplex device (RS-485/RS-422 differential output, high-impedance when disabled). |
| 12 | Z | output | Driver inverting bus output of the full-duplex device (RS-485/RS-422 differential output, high-impedance when disabled). |
| 13 | B | input | Bus-side receiver inverting input; bus pins withstand a common-mode voltage of -7 V to 12 V and absolute bus voltage of ±18 V relative to GND2. |
| 14 | A | input | Bus-side receiver non-inverting input; bus pins withstand a common-mode voltage of -7 V to 12 V and absolute bus voltage of ±18 V relative to GND2. |
| 15 | GND2 | power_in | Bus-side ground; must be connected to GND2 together with pin 9. |
| 16 | VCC2 | power_in | Bus-side (receiver-side) power supply, specified from 3 V to 5.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Signal Isolation Devices |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
ISO1412DW - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files:
iso1412dw-etched.step/iso1412dw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso1412dw.step/iso1412dw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (48 pp, sha256
ee0c34ba1cd8865f, retrieved 2026-10-11, 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 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).