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HADM485ARZ-REEL
Public Made by Adomby adom
HXY MOSFET RS-485 / RS-422 ICs, SOP-8. Pinout cross-checked by two models against the datasheet, 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
markdownHADM485ARZ-REEL
HXY MOSFET · RS-485 / RS-422 ICs · SOP-8
HADM485ARZ-REEL from HXY MOSFET, 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 output: goes high when VA is more than 200 mV above VB, and goes low when VA is more than 200 mV below VB. |
| 2 | RE | input | Receiver output enable, active low: when RE is high the receiver output RO is placed in high-impedance (high-Z) state. |
| 3 | DE | input | Driver output enable, active high: when DE is low the driver output is high-Z, and when DE is high the chip operates in transmit mode (DE low with RE low gives receive mode). |
| 4 | DI | input | Driver input: a low level on DI drives A high and B low, and a high level on DI does the opposite. |
| 5 | GND | power_in | Ground, the negative power supply terminal. |
| 6 | A | bidirectional | Receiver non-inverting input and driver non-inverting output. |
| 7 | B | bidirectional | Receiver inverting input and driver inverting output. |
| 8 | VCC | power_in | Positive power supply terminal, operated from a 5 V single supply; absolute maximum VCC rating is 10 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HXY MOSFET |
| 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 | 10 | V | 2 | |||
| RE, DE control input voltage | -0.5 | 10 | V | 2 | |||
| DI driver input voltage | -0.5 | 10 | V | 2 | |||
| A, B driver output voltage | -0.5 | 15 | V | 2 | |||
| A, B receiver input voltage | -0.5 | 15 | V | 2 | |||
| RO receiver output voltage | -0.5 | 10 | V | 2 | |||
| Storage temperature | Tstg | -65 | 160 | ℃ | 2 | ||
| Operating temperature | TA | -40 | 85 | ℃ | 2 | ||
| Input high voltage (DE, RE) | VIH | 2 | V | 2 | |||
| Input high voltage (DI) | VIH | 2.8 | V | 2 | |||
| Input low voltage (DE, RE) | VIL | 0.8 | V | 2 | |||
| Input low voltage (DI) | VIL | 1.6 | V | 2 | |||
| Input current (DE, RE, DI) | IIN1 | -2 | 2 | uA | 2 | ||
| Input current (A, B), VIN=0V | IIN2 | 180 | 400 | uA | DE=0V, VCC=5V, VIN=0V | 2 | |
| Receiver differential threshold voltage | VTH | -0.2 | 0.2 | V | 2 | ||
| Receiver input hysteresis | ΔVTH | 70 | mV | 2 | |||
| Receiver output high voltage | VOH | 3.5 | 4.5 | V | IO=-4mA, VID=200mV | 2 | |
| Receiver output low voltage | VOL | 0.2 | 0.4 | V | IO=4mA, VID=-200mV | 2 | |
| Receiver tri-state (high-Z) output current | IOZR | -1 | 1 | uA | 0.4V≤VO≤2.4V | 2 | |
| Receiver input resistance | RIN | 48 | KΩ | 2 | |||
| No-load supply current | ICC | 1.2 | 1.6 | mV | RE、DI=0 or VCC; DE=VCC | 2 | |
| No-load supply current | ICC | 1.1 | 1.5 | mV | RE、DI=0 or VCC; DE=0 | 2 | |
| Driver short-circuit current (VO=High) | IOSD1 | 120 | 250 | mA | DE=RE=5V, DI=0, VA=5V | 2 | |
| Driver short-circuit current (VO=Low) | IOSD2 | 120 | 250 | mA | DE=RE=5V, DI=0, VB=0 | 2 | |
| ESD protection, A and B pins, human body model | ESD | -4 | 4 | KV | A and B pins, human body model (note 1) | 2 | |
| Receiver input to output tPLH | tPLH | 20 | 60 | 200 | ns | 见图2,图4, RDIFF=50Ω, CL1=CL2=100pF | 3 |
| Maximum data rate | MAX | 2.5 | Mbps | 3 | |||
| Driver output skew to output | SKEW | 30 | ns | 3 | |||
| Differential receiver skew tPLH - tPHL | SKD | 20 | ns | 差分接收 | 3 |
CAD (KiCad official)
- Symbol:
HADM485ARZ-REEL - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
hadm485arz-reel-etched.step/hadm485arz-reel-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hadm485arz-reel.step/hadm485arz-reel.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HXY MOSFET datasheet (8 pp, sha256
e352d2a5a4dd3f0e, retrieved 2026-10-18, 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: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).