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ISO1412DW

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Texas Instruments Isolated RS-485/422 Transceivers, SOIC-16-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ISO1412DW

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); iso1412dw.step / iso1412dw.glb are 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, 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