component
ISO1450DWR
Public Made by Adomby adom
Texas Instruments Isolated RS-485/422 Transceivers, SOIC-16-300mil. Datasheet-verified pinout, 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
markdownISO1450DWR
Texas Instruments · Isolated RS-485/422 Transceivers · SOIC-16-300mil
ISO1450DWR from Texas Instruments, in a SOIC-16-300mil. 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 | VCC1 | power_in | Logic-side power supply; 2.25V to 5.5V recommended operating range for 50Mbps operation. |
| 2 | GND1 | power_in | Logic-side ground connection for VCC1; pins 2 and 8 must both be connected to GND1. |
| 3 | R | tri_state | Receiver output; high when differential input exceeds -10mV threshold, low when below -130mV, high-impedance when RE is high. |
| 4 | RE | input | Receiver enable input, active-low; enables receiver output at low level, disables to high-impedance when high or open. |
| 5 | DE | input | Driver enable input, active-high; enables driver outputs at high level, disables to high-impedance when low or open. |
| 6 | D | input | Driver input; accepts logic level to control differential outputs A and B with internal pull-up resistor. |
| 7 | NC | unconnected | No internal connection; may be connected to PCB power or ground without affecting device function. |
| 8 | GND1 | power_in | Logic-side ground connection for VCC1; pins 2 and 8 must both be connected to GND1. |
| 9 | GND2 | power_in | Bus-side isolated ground connection for VCC2; pins 9 and 15 must both be connected to GND2. |
| 10 | NC | unconnected | No internal connection; may be connected to PCB power or ground without affecting device function. |
| 11 | NC | unconnected | No internal connection; may be connected to PCB power or ground without affecting device function. |
| 12 | A | bidirectional | Bus non-inverting differential half-duplex transceiver I/O for RS-485 communication; rated ±18V per absolute maximum ratings. |
| 13 | B | bidirectional | Bus inverting differential half-duplex transceiver I/O for RS-485 communication; rated ±18V per absolute maximum ratings. |
| 14 | NC | unconnected | No internal connection; may be connected to PCB power or ground without affecting device function. |
| 15 | GND2 | power_in | Bus-side isolated ground connection for VCC2; pins 9 and 15 must both be connected to GND2. |
| 16 | VCC2 | power_in | Bus-side power supply; 3V to 5.5V recommended operating range for 50Mbps half-duplex operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Signal Isolation Devices |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
ISO1450DWR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files:
iso1450dwr-etched.step/iso1450dwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso1450dwr.step/iso1450dwr.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 2026-09-21, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).