component

WB485E

Public Unreviewed

by Ray

waferbest RS-485 / RS-422 ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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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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Contents

README

markdown

WB485E

waferbest · RS-485 / RS-422 ICs · SOP-8

WB485E from waferbest, in a SOP-8. 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 RO output Receiver output. RO is high when VA-VB > +200mV and low when VA-VB < -200mV. Goes high-impedance when RE is high. TTL/CMOS-level output referenced to VCC/GND.
2 RE input Receiver output enable, active low. When RE is low the receiver output RO is enabled; when RE is high RO is placed in high impedance. VIH >= 2V, VIL <= 0.8V.
3 DE input Driver output enable, active high. When DE is high the driver outputs A/B are enabled (transmit mode); when DE is low the driver outputs are high impedance. VIH >= 2V, VIL <= 0.8V.
4 DI input Driver data input. When DI is low, A is driven high and B is driven low; when DI is high, A is low and B is high. VIH >= 2.8V, VIL <= 1.6V.
5 GND power_in Ground / power supply negative return for the device.
6 A bidirectional Non-inverting differential bus line. Serves as the receiver non-inverting input and the driver non-inverting output on the RS-485/RS-422 bus. Absolute max -0.5V to +15V; ESD ±4kV HBM.
7 B bidirectional Inverting differential bus line. Serves as the receiver inverting input and the driver inverting output on the RS-485/RS-422 bus. Absolute max -0.5V to +15V; ESD ±4kV HBM.
8 VCC power_in Positive supply input, nominally 5V. Absolute maximum 10V. Typical no-load supply current 1.1-1.2 mA.

Key specifications

Parameter Value
Manufacturer waferbest
Package SOP-8
Category Interface
Pins 8

CAD (KiCad official)

  • Symbol: WB485E
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: waferbest datasheet (8 pp, sha256 896c03be677b79b2, 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).

Datasheet PDF