component
SP3485ECMM
Public Made by Adomby adom
HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, MSOP-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
markdownSP3485ECMM
HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · MSOP-8
SP3485ECMM from HGSEMI, in a MSOP-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: with RE low, RO is high when A-B is at or above +200 mV and low when A-B is at or below -200 mV. |
| 2 | RE | input | Receiver output enable, active low: RE high disables the receiver so RO is high-impedance, and RE high with DE low puts the device into low-power shutdown. |
| 3 | DE | input | Driver output enable, active high: DE low puts the driver outputs in high-impedance, and RE high with DE low puts the device into low-power shutdown. |
| 4 | DI | input | Driver input: with DE high, a low on DI drives A low and B high, and a high on DI drives A high and B low. |
| 5 | GND | power_in | Ground; all voltages in the datasheet are referenced to this pin. |
| 6 | A | bidirectional | Non-inverting receiver input and non-inverting driver output on the RS-485 bus. |
| 7 | B | bidirectional | Inverting receiver input and inverting driver output on the RS-485 bus. |
| 8 | VCC | power_in | Supply pin; the device operates from 3.0 to 3.6 V (3.3 V ±10%), with absolute maximum VCC of +7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | MSOP-8 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Differential driver output voltage (RL=54Ω) | VOD2 | 1.5 | V | 图 2，RL = 54Ω | 4 | ||
| Differential driver output voltage (RL=100Ω) | VOD2 | 2 | V | 图 2，RL = 100 Ω | 4 | ||
| Change in magnitude of differential output voltage | ΔVOD | 0.2 | V | 图 2，RL = 54 Ω | 4 | ||
| Driver common-mode output voltage | VOC | 3 | V | 图 2，RL = 54 Ω | 4 | ||
| Change in magnitude of common-mode output voltage | ΔVOC | 0.2 | V | 图 2，RL = 54 Ω | 4 | ||
| High-level input voltage | VIH | 2 | V | DE，DI，RE | 4 | ||
| Low-level input voltage | VIL | 0.8 | V | DE，DI，RE | 4 | ||
| Logic input current | IIN1 | -2 | 2 | uA | DE，DI，RE | 4 | |
| Output short-circuit current, shorted to high | IOSD1 | 250 | mA | 短路到 0V~12V | 4 | ||
| Output short-circuit current, shorted to low | IOSD2 | -250 | mA | 短路到-7V~0V | 4 | ||
| Input current (A, B) | IIN2 | 1 | mA | DE = 0 V, VCC=0 或 3.3V,VIN = 12 V | 5 | ||
| Input current (A, B) | IIN2 | -0.8 | mA | DE = 0 V, VCC=0 或 3.3V,VIN = -7 V | 5 | ||
| Positive input threshold voltage | VIT+ | 200 | mV | -7V≦VCM≦12V | 5 | ||
| Negative input threshold voltage | VIT- | -200 | mV | -7V≦VCM≦12V | 5 | ||
| Input hysteresis voltage | Vhys | 10 | 30 | mV | -7V≦VCM≦12V | 5 | |
| Low-level output voltage | VOL | 0.4 | V | IOUT = +2.5mA，VID = -200 mV | 5 | ||
| Three-state input leakage current | IOZR | -1 | 1 | uA | 0.4 V < VO < 2.4 V | 5 | |
| Receiver input resistance | RIN | 12 | kΩ | -7V≦VCM≦12V | 5 | ||
| Receiver short-circuit current | IOSR | -60 | 60 | mA | 0 V≤VO≤VCC | 5 | |
| Supply current (RE=0V, DE=0V) | ICC1 | 800 | uA | RE =0V，DE = 0 V | 5 | ||
| Supply current (RE=VCC, DE=VCC) | ICC2 | 700 | uA | RE =VCC，DE=VCC | 5 | ||
| Shutdown current | ISHDN | 30 | uA | RE =VCC，DE=0V | 5 | ||
| ESD HBM (A/B pins) | -15 | 15 | kV | HBM 人体模式 | 5 | ||
| ESD MM (A/B pins) | -800 | 800 | V | MM 机器模式 | 5 | ||
| ESD contact discharge (A/B pins) | -12 | 12 | kV | IEC 61000-4-2 接触放电 | 5 | ||
| ESD air discharge (A/B pins) | -15 | 15 | kV | IEC 61000-4-2 空气放电 | 5 | ||
| ESD HBM (other pins) | -4 | 4 | kV | HBM 人体模式 | 5 | ||
| Driver differential output delay | tDD | 10 | 35 | ns | RDIFF = 60 Ω, CL1=CL2=100pF (见图 3 与图 4) | 6 | |
| Driver differential transition time | tTD | 12 | 25 | ns | 6 | ||
| Driver propagation delay, low to high | tPLH | 8 | 35 | ns | RDIFF = 27 Ω, (见图 3 与图 4) | 6 | |
| Driver propagation delay, high to low | tPHL | 8 | 35 | ns | 6 | ||
| Driver propagation delay skew /tPLH-tPHL/ | tPDS | 1 | 8 | ns | 6 | ||
| Enable to output high | tPZH | 20 | 90 | ns | RL = 110Ω，（见图 5、6） | 6 | |
| Enable to output low | tPZL | 20 | 90 | ns | 6 | ||
| Input low to disable | tPLZ | 20 | 80 | ns | 6 | ||
| Input high to disable | tPHZ | 20 | 80 | ns | 6 | ||
| Enable to output high from shutdown | tDSH | 500 | 900 | ns | RL = 110Ω，（见图 5、6） | 6 | |
| Enable to output low from shutdown | tDSL | 500 | 900 | ns | RL = 110Ω，（见图 5、6） | 6 | |
| Receiver propagation delay, input to output low to high | tRPLH | 80 | 150 | ns | CL=15pF，见图 7 与图 8 | 7 | |
| Receiver propagation delay, input to output high to low | tRPHL | 80 | 150 | ns | 7 | ||
| Receiver propagation delay skew /tRPLH − tRPHL/ | tRPDS | 7 | 10 | ns | 7 | ||
| Enable to output low time | tRPZL | 20 | 50 | ns | CL=15pF，见图 7 与图 8 | 7 | |
| Enable to output high time | tRPZH | 20 | 50 | ns | CL=15pF，见图 7 与图 8 | 7 | |
| Output low to disable time | tPRLZ | 20 | 45 | ns | CL=15pF，见图 7 与图 8 | 7 | |
| Output high to disable time | tPRHZ | 20 | 45 | ns | CL=15pF，见图 7 与图 8 | 7 | |
| Enable to output high time from shutdown | tRPSH | 200 | 1400 | ns | CL=15pF，见图 7 与图 8 | 7 | |
| Enable to output low time from shutdown | tRPSL | 200 | 1400 | ns | CL=15pF，见图 7 与图 8 | 7 | |
| Time to enter shutdown | tSHDN | 80 | 300 | ns | NOTE2 | 7 | |
| Supply voltage | VCC | 7 | V | 3 | |||
| Control port voltage (RE, DE, DI) | RE, DE, DI | -0.3 | 7 | V | 3 | ||
| Bus-side input voltage (A, B) | A, B | -7 | 13 | V | 3 | ||
| Receiver output voltage | RO | -0.3 | 7 | V | 3 | ||
| Storage operating temperature range | -60 | 150 | ℃ | 3 | |||
| Soldering temperature range | TLEAD | 260 | ℃ | 10 s | 3 | ||
| Operating temperature range (SP3485EC) | 0 | 70 | ℃ | 3 | |||
| Operating supply voltage range | VCC | 3 | 3.6 | V | 2 |
CAD (KiCad official)
- Symbol:
SP3485ECMM - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
sp3485ecmm-etched.step/sp3485ecmm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sp3485ecmm.step/sp3485ecmm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (17 pp, sha256
c05da1a89ebea3bb, retrieved 2026-10-17, 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: 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).