component

HX485-S

Public Made by Adom

by adom

ZHHXDZ RS-485 / RS-422 ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentinterfacehx485-sfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

PCB Footprint

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Datasheet

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Download PDF
Contents

README

markdown

HX485-S

ZHHXDZ · RS-485 / RS-422 ICs · SOP-8

HX485-S from ZHHXDZ, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 RO output Receiver data output: per the receiver truth table, RO is high for a differential input of -50 mV, for an open-circuit or short-circuit input (fail-safe), and low for -200 mV when RE is low, and it goes high-impedance when RE is high with DE high.
2 RE input Receiver output enable, active low: the receiver output is effective when RE is low and is placed in high-impedance when RE is high.
3 DE input Driver output enable, active high: the chip operates in transmit mode when DE is high, and with DE low and RE low it operates in receive mode with the A/B driver outputs in high-impedance.
4 DI input Driver data input: with DE high, DI high drives A high and B low, and DI low drives A low and B high.
5 GND power_in Ground.
6 A bidirectional Non-inverting driver differential output and receiver differential input; the datasheet rates ESD protection at ±15 kV (human body model) between A and B.
7 B bidirectional Inverting driver differential output and receiver differential input; the datasheet rates ESD protection at ±15 kV (human body model) between A and B.
8 Vcc power_in Power supply, 5 V nominal; the DC characteristics specify a working voltage range of 4.5 V to 5.5 V (Vcc = 5 V ±5%).

Key specifications

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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Working voltage range Vcc 4.5 5 5.5 V Vcc=5V±5%, TA=25℃ (DC table header) 2
Driver differential output (with load) VOD2 1.5 V R=54Ω or R=27Ω, Figure 1 2
Change in differential output voltage magnitude ΔVOD 0.2 V R=54Ω or R=27Ω, Figure 1; see note 1 (DI change) 2
Driver common-mode output voltage VOC 1 3 V R=54Ω or R=27Ω, Figure 1 2
Change in common-mode output voltage ΔVOC 0.2 V R=54Ω or R=27Ω, Figure 1; see note 1 (DI change) 2
Input high voltage VIH 2 V DE, RE, DI 2
Input low voltage VIL 0.8 V DE, RE, DI 2
Input current (DE, RE, DI) IIN1 -2 2 uA 2
Input current (A, B) IIN2 40 90 uA DE=0V, Vcc=5V, VIN=5V 2
Input current (A, B) IIN2 60 100 uA DE=0V, Vcc=5V, VIN=0V 2
Receiver differential input threshold voltage VTH -200 -50 mV -7V≤VCM≤+12V 2
Receiver differential input threshold voltage change ΔVTH 25 mV 2
Receiver output high level VOH 4 V IO=-8mA 2
Receiver output low level VOL 0.4 V IO=8mA 2
Receiver output leakage current (tri-state) IOZR 1 uA 0.4V≤Vo≤2.4V 2
Receiver input impedance RIN 96 kΩ -7V≤VCM≤+12V 2
No load operating current ICC 480 600 uA DE = Vcc 2
No load operating current ICC 450 600 uA DE=GND, RE=DI=GND or Vcc 2
Receiver output short-circuit current IOSR 95 mA 0V ≤ VRO ≤ (as printed) 2
ESD protection, human body model -15 15 kV Between A/B, human body mode 2
Driver input to output (high) tDPLH 60 nS RDIFF=50Ω, CL1=CL2=100pF, Figure 3,5 2
Driver input to output (low) tDPHL 60 nS RDIFF=50Ω, CL1=CL2=100pF, Figure 3,5 2
Driver differential skew tDSKEW -10 10 nS RDIFF=50Ω, CL1=CL2=100pF 2
Driver output offset tDPLH, tDPHL -2.5 nS RDIFF=50Ω, CL1=CL2=100pF 2
Drive up and down time tDR / tDF 25 nS RDIFF=50Ω, CL1=CL2=100pF 2
Driver enable to high output tDZH 150 nS CL=100pF, Figure 4,6, S2 closed 2
Driver enable to low output tDZL 150 nS CL=100pF, Figure 4,6, S1 closed 2
Driver high to off tDLZ 100 nS CL=15pF, Figure 4,6, S1 closed 2
Driver low to off tDHZ 100 nS CL=15pF, Figure 4,6, S2 closed 2
Receiver input to output (low to high) tRPLH 150 nS /VID/≥2.0V; VID rise/fall time≤15nS, Figure 7,9 2
Receiver input to output (high to low) tRPHL 150 nS /VID/≥2.0V; VID rise/fall time≤15nS, Figure 7,9 2
Differential receiver offset tRSKEW -10 0 10 nS 2
Receiver enable to output low tRZL 20 50 nS CL=100pF, Figure 2,8 2
Receiver enable to output high tRZH 20 50 nS CL=100pF, Figure 2,8 2
Receiver low to off tRLZ 20 50 nS CL=100pF, Figure 2,8 2
Receiver high to off tRHZ 20 50 nS CL=100pF, Figure 2,8 2
Maximum data speed fMAX 10 Mbps 3
Supply voltage VCC 6 V 2
Control input voltage (DE, RE) DE，RE 6 V 2
Driver input voltage DI 6 V 2
Drive output voltage / receive input voltage A,B -7 12 V 2
Storage temperature range TSTG -55 150 ℃ 2
Operating temperature range TOP -40 85 ℃ 2
Maximum operating temperature range TMOP -55 125 ℃ 2
Power dissipation PD 470 mW SOP-8 2
Solder temperature TL 300 ℃ 10 seconds 2

CAD (KiCad official)

  • Symbol: HX485-S
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: hx485-s-etched.step / hx485-s-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hx485-s.step / hx485-s.glb are the bare package body.

Provenance

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

  • Datasheet: ZHHXDZ datasheet (4 pp, sha256 46fb57171727991f, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (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).

Datasheet PDF