component
ISO1176DWR
Public Unreviewedby Ray
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
markdownISO1176DWR
Texas Instruments · Isolated RS-485/422 Transceivers · SOIC-16-300mil
ISO1176DWR 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. Recommended 3.15 V to 5.5 V referenced to GND1. |
| 2 | GND1 | power_in | Logic-side ground. Internally connected to pin 8. |
| 3 | R | output | Receiver output. Logic-level output reflecting the state of the differential bus (A/B). |
| 4 | RE | input | Receiver logic-low enable (active low). Drive low to enable the receiver output R. |
| 5 | DE | input | Driver logic-high enable. Drive high to enable the differential bus driver (A/B). |
| 6 | D | input | Driver logic input. Digital input whose state is transmitted differentially on A/B when the driver is enabled. |
| 7 | PV | input | Chip enable (power-valid). Logic high applied immediately after power up enables device operation; logic low 3-states all outputs. |
| 8 | GND1 | power_in | Logic-side ground. Internally connected to pin 2. |
| 9 | GND2 | power_in | Bus-side ground. Internally connected to pin 15. |
| 10 | ISODE | output | Bus-side (isolated) driver enable output. Mirrors the DE state across the isolation barrier, useful for controlling external bus-side circuitry. |
| 11 | NC | unconnected | Not connected internally; may be left floating. |
| 12 | A | bidirectional | Noninverting differential bus I/O (RS-485/PROFIBUS A line). Operates over -7 V to +12 V common-mode range. |
| 13 | B | bidirectional | Inverting differential bus I/O (RS-485/PROFIBUS B line). Operates over -7 V to +12 V common-mode range. |
| 14 | NC | unconnected | Not connected internally; may be left floating. |
| 15 | GND2 | power_in | Bus-side ground. Internally connected to pin 9. |
| 16 | VCC2 | power_in | Bus-side power supply. Recommended 4.75 V to 5.25 V referenced to GND2. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Signal Isolation Devices |
| Pins | 16 |
Ordering variants
Same part, different packaging or reel option.
ISO1176DWR
CAD (KiCad official)
- Symbol:
ISO1176DWR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (36 pp, sha256
a3a0d37a1070db5e, retrieved 2026-08-17, 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:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).