HD588E from Broadic, 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. Logic-level output of the RS-485 receiver; high when A-B ≥ -50mV, low when A-B ≤ -200mV. High-impedance when /RE is high.
2	/RE	input	Receiver enable, active low. Drive low to enable the receiver output RO; drive high to place RO in high-impedance. With /RE=1 and DE=0 the part enters low-current shutdown (I_SHDN ≈ 1.8 µA typ).
3	DE	input	Driver enable, active high. Drive high to enable the differential driver onto A/B; drive low to place the driver outputs in high-impedance.
4	DI	input	Driver input. TTL/CMOS logic input; V_IH ≥ 2.0V, V_IL ≤ 0.8V. When the driver is enabled, a logic high on DI forces A high and B low; a logic low forces the inverse.
5	GND	power_in	Ground reference for the device. All voltages are referenced to this pin.
6	A	bidirectional	Non-inverting RS-485/RS-422 bus I/O. Driver non-inverting output and receiver non-inverting input. Withstands -8V to +13V bus voltage and ±16kV HBM ESD.
7	B	bidirectional	Inverting RS-485/RS-422 bus I/O. Driver inverting output and receiver inverting input. Withstands -8V to +13V bus voltage and ±16kV HBM ESD.
8	VCC	power_in	Supply voltage input. 3.3V or 5V operation (absolute maximum +6V). Bypass with a 0.1 µF ceramic capacitor to GND close to the pin.

Key specifications

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

CAD (KiCad official)

Symbol: HD588E
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`hd588e.step`	122 KB	You want the bare part, or you mark your own boards.
`hd588e-etched.step`	1.6 MB	You want the part with `HD588E` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 402 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: Broadic datasheet (12 pp, sha256 34d878c4619b2393, 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