component
MAX14946EWE+T
Public Unreviewedby Ray
Analog Devices Inc Maxim Integrated 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
markdownMAX14946EWE+T
Analog Devices Inc Maxim Integrated · Isolated RS-485/422 Transceivers · SOIC-16-300mil
MAX14946EWE+T from Analog Devices Inc Maxim Integrated, 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 | TD1 | output | Transformer driver output 1 for isolated power transfer to external center-tapped isolation transformer. |
| 2 | TD2 | output | Transformer driver output 2 for isolated power transfer to external center-tapped isolation transformer. |
| 3 | GNDA | power_in | UART/logic-side ground; reference for digital signals and transformer driver circuits. |
| 4 | VDDA | power_in | Logic-side power input 3.0V to 5.5V; bypass with 0.1µF and 1µF capacitors to GNDA. |
| 5 | RXD | output | Receiver data output; high when (VA-VB) > -50mV, low when < -200mV, high-impedance when RE high. |
| 6 | RE | input | Receiver output enable, active low; internal 4.5µA pulldown to GNDA enables RXD. |
| 7 | DE | input | Driver output enable for A and B bus pins, active high; internal 4.5µA pulldown to GNDA. |
| 8 | TXD | input | Driver input; low forces A low and B high, high forces A high and B low; internal 4.5µA pullup to VDDA. |
| 9 | GNDB | power_in | Cable-side ground; reference for internal LDO, DEM output, and RS-485/RS-422 bus signals. |
| 10 | DEM | output | Driver enable monitor output; logic high when transmitter is enabled. |
| 11 | VLDO | power_in | LDO power input 4.68V to 14V generating 5V VDDB output with 300mA current limit. |
| 12 | A | bidirectional | Noninverting RS-485 differential output (driver) and input (receiver); ±30kV ESD protected. |
| 13 | B | bidirectional | Inverting RS-485 differential output (driver) and input (receiver); ±30kV ESD protected. |
| 14 | GNDB | power_in | Cable-side ground; reference for internal LDO, DEM output, and RS-485/RS-422 bus signals. |
| 15 | GNDB | power_in | Cable-side ground; reference for internal LDO, DEM output, and RS-485/RS-422 bus signals. |
| 16 | VDDB | power_in | Cable-side power 4.5V to 5.5V output from internal LDO when VLDO driven, or direct supply input when VLDO disabled. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc Maxim Integrated |
| Package | SOIC-16-300mil |
| Category | Signal Isolation Devices |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
MAX14946EWE+T - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files:
max14946ewe-t-etched.step/max14946ewe-t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max14946ewe-t.step/max14946ewe-t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices Inc Maxim Integrated datasheet (21 pp, sha256
021ee07365c89a65, retrieved 2026-09-17, tier: lcsc) - 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).