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HX4082-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.

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HX4082-S

ZHHXDZ · RS-485 / RS-422 ICs · SOP-8

HX4082-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, which is driven low or high according to the receiver truth table and is high-impedance when RE is high.
2 RE input Receiver enable: RE low enables the receiver output RO, and RE high puts RO into the high-impedance (Z) state.
3 DE input Driver enable: DE high enables the driver to transmit (driver truth table), and DE low places the chip in receive mode with the driver outputs at high impedance.
4 DI input Driver data input: a high DI drives A high and B low, and a low DI drives A low and B high when DE is high.
5 GND power_in Ground reference; the datasheet states that all voltages are referenced to ground.
6 A bidirectional Driver differential output and receiver differential input (A side of the RS-485/RS-422 bus), rated ±15 kV ESD (HBM) between A and B.
7 B bidirectional Driver differential output and receiver differential input (B side of the RS-485/RS-422 bus), rated ±15 kV ESD (HBM) between A and B.
8 VCC power_in Power supply; the datasheet gives a working voltage range of 4.5 V to 5.5 V (5 V nominal) and an absolute maximum of 6.0 V.

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
Supply voltage VCC -0.3 6 V 2
Control input voltage DE,RE -0.3 6 V 2
Drive input voltage DI -0.3 6 V 2
Drive output voltage / receive input voltage A,B -7 12 V 2
Receiving output voltage RO -0.5 V Maximum printed as VCC+0.3, not numeric 2
Storage temperature range TSTG -55 150 ℃ 2
Operating temperature range TOP -40 85 ℃ 2
Maximum operating temperature range (label as printed TMOP) TMOP -55 125 ℃ 2
Power dissipation PD 470 mW SOP-8 (+70℃ or above) 2
Solder temperature TL 300 ℃ 10 seconds 2
Working voltage range Vcc 4.5 5.5 V Vcc=5V±5%, TA=25℃ 2
Driver differential output (no load) VOD1 5 V No load 2
Driver differential output VOD2 1.5 V R=54Ω or R=27Ω, Figure 1 2
Change in magnitude of differential output voltage ΔVOD 0.2 V 2
Driver common mode output voltage VOC 1 3 V 2
Change in magnitude of common mode output voltage ΔVOC 0.2 V 2
Input high voltage VIH 2 V DE,RE,DI 2
Input low voltage VIL 0.8 V DE,RE,DI 2
Input current IIN1 -2 2 uA DE,RE,DI 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 output high level VOH 4 V IO=-8mA 2
Receiver output low level VOL 0.4 V IO=8mA 2
Receiver output leakage (tri-state) IOZR 1 uA 0.4V ≤ Vo ≤ 2.4V 2
No load operating current ICC 480 600 uA -7V ≤ VCM ≤ +12V, RE=DI=GND or DE=Vcc 2
Operating current ICC 450 600 uA Vcc, DE=GND 2
Receiver output short-circuit current IOSR 95 mA 0V ≤ VRO ≤ (remainder of condition not legible) 2
ESD protection, human body model -15 15 kV Between A/B, human body mode 2
Driver driver input to output propagation delay (low-to-high) tDPLH 250 1000 nS RDIFF=50Ω, CL1=CL2=100pF, Figure 3,5 2
Driver input to output propagation delay (high-to-low) tDPHL 250 1000 nS RDIFF=50Ω, CL1=CL2=100pF, Figure 3,5 2
Driver output offset /tDPLH, tDPHL/ tDSKEW -100 100 nS RDIFF=50Ω, CL1=CL2=100pF 2
Drive up and down time tDR / tDF 200 750 nS RDIFF=50Ω, CL1=CL2=100pF 2
Driver enables high output tDZH 2500 nS CL=100pF, Figure 4,6, S2 closed 2
Driver enables output to be low tDZL 2500 nS CL=100pF, Figure 4,6, S1 closed 2
Drive from low to off tDLZ 100 nS CL=15pF, Figure 4,6, S1 closed 2
Drive from high to off tDHZ 100 nS CL=15pF, Figure 4,6, S2 closed 2
Receiver input to output (low-to-high) tRPLH 200 nS /VID/ ≥ 2.0V; rising and falling time ≤ 15nS, Figure 7,9 2
Receiver input to output (high-to-low) tRPHL 200 nS /VID/ ≥ 2.0V; rising and falling time ≤ 15nS, Figure 7,9 2
Differential receiver offset /tRPLH, tRPHL/ tRSKEW -30 30 nS 2
Receiver enable to output low (S1 closed) tRZL 20 50 nS CL=100pF, Figure 2,8 2
Receiver enable to output high (S2 closed) tRZH 20 50 nS CL=100pF, Figure 2,8 2
Receiver from low to off (S1 closed) tRLZ 20 50 nS CL=100pF, Figure 2,8 2
Receiver from high to off (S2 closed) tRHZ 20 50 nS CL=100pF, Figure 2,8 2
Maximum data speed fMAX 250 500 Mbps 3
Driver output short-circuit current IOD 100 mA Short circuit current between A/B 2
Receiver differential input impedance RIN 96 kΩ 2
Change in differential receiver threshold (hysteresis) ΔVTH 25 mV 2

CAD (KiCad official)

  • Symbol: HX4082-S
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: hx4082-s-etched.step / hx4082-s-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hx4082-s.step / hx4082-s.glb are the bare package body.

Provenance

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

  • Datasheet: ZHHXDZ datasheet (4 pp, sha256 cec6d0a583acd3dc, 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