component
SP3085EIMM
Public Made by Adomby adom
HGSEMI RS-485 / RS-422 ICs, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SP3085EIMM
HGSEMI · RS-485 / RS-422 ICs · MSOP-8
SP3085EIMM 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: when /RE is low, RO is high if A-B ≥ -50mV and low if A-B ≤ -200mV. |
| 2 | /RE | input | Active-low receiver output enable: high disables the receiver (RO high-impedance), and /RE high with DE low puts the device into low-power shutdown. |
| 3 | DE | input | Active-high driver output enable: low puts the driver outputs in high-impedance, and DE low with /RE high puts the device into low-power shutdown. |
| 4 | DI | input | Driver input: when DE is 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 reference for the device; all voltages are referenced to ground. |
| 6 | A | bidirectional | Receiver non-inverting input and driver non-inverting output on the RS-485 bus; bus-side input voltage is rated -7 V to +13 V with ±16 kV HBM ESD protection. |
| 7 | B | bidirectional | Receiver inverting input and driver inverting output on the RS-485 bus; bus-side input voltage is rated -7 V to +13 V with ±16 kV HBM ESD protection. |
| 8 | VCC | power_in | Supply pin, operating range 4.5-5.5 V; absolute maximum supply is +7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | MSOP-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 |
|---|---|---|---|---|---|---|---|
| Power supply voltage (absolute maximum) | VCC | 7 | V | 3 | |||
| Supply voltage operating range | VCC | 4.5 | 5.5 | V | 2 | ||
| Bus-side input voltage A, B | A、B | -7 | 13 | V | 3 | ||
| Control port voltage /RE, DE, DI | -0.3 | V | 3 | ||||
| Receiver output voltage RO | RO | -0.3 | V | 3 | |||
| Operating temperature range (SP3085EI) | -40 | 85 | ℃ | SP3085EI | 3 | ||
| Storage temperature range | -60 | 150 | ℃ | 3 | |||
| Soldering temperature range | TLEAD | 260 | ℃ | 10S | 3 | ||
| Driver differential output voltage | VOD2 | 1.5 | V | 图 2，RL = 27 Ω | 3 | ||
| Driver differential output voltage | VOD2 | 2 | V | 图 2，RL = 50 Ω | 3 | ||
| Change in magnitude of differential output voltage | ∆VOD | 0.2 | V | 图 2，RL = 27 Ω | 3 | ||
| Driver output common-mode voltage | VOC | 3 | V | 图 2，RL = 27 Ω | 3 | ||
| Change in magnitude of common-mode output voltage | ∆VOC | 0.2 | V | 图 2，RL = 27 Ω | 3 | ||
| High-level input voltage | VIH | 2 | V | DE，DI，/RE | 3 | ||
| Low-level input voltage | VIL | 0.8 | V | DE，DI，/RE | 3 | ||
| Logic input current | IIN1 | -2 | 2 | uA | DE，DI，/RE | 3 | |
| Driver output short-circuit current, shorted high | IOSD1 | 35 | 250 | mA | 短路到 0V~12V | 3 | |
| Driver output short-circuit current, shorted low | IOSD2 | -250 | -35 | mA | 短路到-7V~0V | 3 | |
| Input current (A, B) | IIN2 | 125 | uA | DE = 0 V，VCC=0 或 5V，VIN = 12 V | 4 | ||
| Input current (A, B) | IIN2 | -100 | uA | DE = 0 V， VCC=0 或 5V，VIN = -7 V | 4 | ||
| Positive input threshold voltage | VIT+ | -50 | mV | -7V≦VCM≦12V | 4 | ||
| Negative input threshold voltage | VIT- | -200 | mV | -7V≦VCM≦12V | 4 | ||
| Input hysteresis voltage | Vhys | 10 | 30 | mV | -7V≦VCM≦12V | 4 | |
| Low-level output voltage | VOL | 0.4 | V | IOUT = +4mA，VID = -200 mV | 4 | ||
| Three-state input leakage current | IOZR | -1 | 1 | uA | 0.4 V < VO < 2.4 V | 4 | |
| Receiver short-circuit current | IOSR | 7 | 95 | mA | 0 V≤VO≤VCC | 4 | |
| Supply current (driver disabled, /RE=0V or VCC) | ICC1 | 180 | 300 | uA | /RE=0V 或 VCC，DE = 0 V | 4 | |
| Supply current (driver and receiver enabled) | ICC2 | 150 | 300 | uA | /RE=VCC，DE=VCC | 4 | |
| Shutdown supply current | ISHDN | 0.5 | 10 | uA | /RE=VCC，DE=0V | 4 | |
| Driver propagation delay, low to high | tDPLH | 100 | 150 | ns | RDIFF = 54 Ω, CL1=CL2=100pF | 4 | |
| Driver propagation delay, high to low | tDPHL | 100 | 150 | ns | 4 | ||
| Driver differential output skew | tSKEW1 | -10 | 10 | ns | 4 | ||
| Driver rise time / fall time | tDR, tDF | 190 | 250 | ns | 4 | ||
| Driver enable to output high | tDZH | 70 | 160 | ns | CL= 100 pF，S1 闭合（见图 5、6） | 4 | |
| Driver enable to output low | tDZL | 70 | 160 | ns | 4 | ||
| Driver input low to disable | tDLZ | 70 | 100 | ns | CL = 15 pF，S2 闭合（见图 5、6） | 4 | |
| Driver input high to disable | tDHZ | 70 | 100 | ns | 4 | ||
| Driver enable to output high, in shutdown | tDZH(SHDN) | 80 | 120 | ns | CL = 15 pF,S2 闭合（见图 5、6） | 4 | |
| Driver enable to output low, in shutdown | tDZL(SHDN) | 80 | 120 | ns | CL = 15 pF,S1 闭合（见图 5、6） | 4 | |
| Receiver propagation delay, low to high | tRPLH | 50 | 80 | ns | 见图 7 与图 8，VID≥2.0V；上升与下降沿时间 VID≤15ns | 5 | |
| Receiver propagation delay, high to low | tRPHL | 50 | 80 | ns | 5 | ||
| Receiver propagation delay skew | tSKEW2 | 5 | 15 | ns | 5 | ||
| Receiver enable to output low | tRZL | 25 | 40 | ns | CL = 100 pF，S1 闭合(见图 9，10) | 5 | |
| Receiver enable to output high | tRZH | 25 | 40 | ns | CL = 100 pF，S2 闭合(见图 9，10) | 5 | |
| Receiver output low to disable | tRLZ | 25 | 50 | ns | CL = 100 pF,S1 闭合(见图 9，10) | 5 | |
| Receiver output high to disable | tRHZ | 25 | 50 | ns | CL= 100pF，S2 闭合(见图 9,10) | 5 | |
| Receiver enable to output high, in shutdown | tRZH(SHDN) | 1000 | ns | CL = 100 pF，S2 闭合(见图 9,10) | 5 | ||
| Receiver enable to output low, in shutdown | tRZL(SHDN) | 1000 | ns | CL= 100 pF，S1 闭合(见图 9，10) | 5 | ||
| Time to enter shutdown | tSHDN | 50 | 200 | 600 | ns | /RE=1，DE=0 持续时间 (NOTE2) | 5 |
| ESD HBM, A and B pins | -16 | 16 | KV | A、B 人体模型（HBM） | 4 | ||
| ESD contact discharge, A and B pins | -16 | 16 | KV | A、B 接触放电 | 4 | ||
| ESD HBM, other ports | -6 | 6 | KV | 其它端口 人体模型（HBM） | 4 | ||
| Driver differential output (no load) | VOD1 | 5 | V | 3 | |||
| Receiver input resistance | RIN | 96 | kΩ | -7V≦VCM≦12V | 4 | ||
| Thermal shutdown threshold temperature | 150 | ℃ | 3 | ||||
| Thermal shutdown hysteresis temperature | 20 | ℃ | 3 |
CAD (KiCad official)
- Symbol:
SP3085EIMM - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
sp3085eimm-etched.step/sp3085eimm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sp3085eimm.step/sp3085eimm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (13 pp, sha256
467b978ccfded829, 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).
# SP3085EIMM
**HGSEMI** · RS-485 / RS-422 ICs · MSOP-8
SP3085EIMM 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: when /RE is low, RO is high if A-B ≥ -50mV and low if A-B ≤ -200mV. |
| 2 | /RE | input | Active-low receiver output enable: high disables the receiver (RO high-impedance), and /RE high with DE low puts the device into low-power shutdown. |
| 3 | DE | input | Active-high driver output enable: low puts the driver outputs in high-impedance, and DE low with /RE high puts the device into low-power shutdown. |
| 4 | DI | input | Driver input: when DE is 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 reference for the device; all voltages are referenced to ground. |
| 6 | A | bidirectional | Receiver non-inverting input and driver non-inverting output on the RS-485 bus; bus-side input voltage is rated -7 V to +13 V with ±16 kV HBM ESD protection. |
| 7 | B | bidirectional | Receiver inverting input and driver inverting output on the RS-485 bus; bus-side input voltage is rated -7 V to +13 V with ±16 kV HBM ESD protection. |
| 8 | VCC | power_in | Supply pin, operating range 4.5-5.5 V; absolute maximum supply is +7 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | MSOP-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 |
|---|---|---|---|---|---|---|---|
| Power supply voltage (absolute maximum) | VCC | | | 7 | V | | 3 |
| Supply voltage operating range | VCC | 4.5 | | 5.5 | V | | 2 |
| Bus-side input voltage A, B | A、B | -7 | | 13 | V | | 3 |
| Control port voltage /RE, DE, DI | | -0.3 | | | V | | 3 |
| Receiver output voltage RO | RO | -0.3 | | | V | | 3 |
| Operating temperature range (SP3085EI) | | -40 | | 85 | ℃ | SP3085EI | 3 |
| Storage temperature range | | -60 | | 150 | ℃ | | 3 |
| Soldering temperature range | TLEAD | | | 260 | ℃ | 10S | 3 |
| Driver differential output voltage | VOD2 | 1.5 | | | V | 图 2，RL = 27 Ω | 3 |
| Driver differential output voltage | VOD2 | 2 | | | V | 图 2，RL = 50 Ω | 3 |
| Change in magnitude of differential output voltage | ∆VOD | | | 0.2 | V | 图 2，RL = 27 Ω | 3 |
| Driver output common-mode voltage | VOC | | | 3 | V | 图 2，RL = 27 Ω | 3 |
| Change in magnitude of common-mode output voltage | ∆VOC | | | 0.2 | V | 图 2，RL = 27 Ω | 3 |
| High-level input voltage | VIH | 2 | | | V | DE，DI，/RE | 3 |
| Low-level input voltage | VIL | | | 0.8 | V | DE，DI，/RE | 3 |
| Logic input current | IIN1 | -2 | | 2 | uA | DE，DI，/RE | 3 |
| Driver output short-circuit current, shorted high | IOSD1 | 35 | | 250 | mA | 短路到 0V~12V | 3 |
| Driver output short-circuit current, shorted low | IOSD2 | -250 | | -35 | mA | 短路到-7V~0V | 3 |
| Input current (A, B) | IIN2 | | | 125 | uA | DE = 0 V，VCC=0 或 5V，VIN = 12 V | 4 |
| Input current (A, B) | IIN2 | -100 | | | uA | DE = 0 V， VCC=0 或 5V，VIN = -7 V | 4 |
| Positive input threshold voltage | VIT+ | -50 | | | mV | -7V≦VCM≦12V | 4 |
| Negative input threshold voltage | VIT- | | | -200 | mV | -7V≦VCM≦12V | 4 |
| Input hysteresis voltage | Vhys | | 10 | 30 | mV | -7V≦VCM≦12V | 4 |
| Low-level output voltage | VOL | | | 0.4 | V | IOUT = +4mA，VID = -200 mV | 4 |
| Three-state input leakage current | IOZR | -1 | | 1 | uA | 0.4 V < VO < 2.4 V | 4 |
| Receiver short-circuit current | IOSR | 7 | | 95 | mA | 0 V≤VO≤VCC | 4 |
| Supply current (driver disabled, /RE=0V or VCC) | ICC1 | | 180 | 300 | uA | /RE=0V 或 VCC，DE = 0 V | 4 |
| Supply current (driver and receiver enabled) | ICC2 | | 150 | 300 | uA | /RE=VCC，DE=VCC | 4 |
| Shutdown supply current | ISHDN | | 0.5 | 10 | uA | /RE=VCC，DE=0V | 4 |
| Driver propagation delay, low to high | tDPLH | | 100 | 150 | ns | RDIFF = 54 Ω, CL1=CL2=100pF | 4 |
| Driver propagation delay, high to low | tDPHL | | 100 | 150 | ns | | 4 |
| Driver differential output skew | tSKEW1 | -10 | | 10 | ns | | 4 |
| Driver rise time / fall time | tDR, tDF | | 190 | 250 | ns | | 4 |
| Driver enable to output high | tDZH | | 70 | 160 | ns | CL= 100 pF，S1 闭合（见图 5、6） | 4 |
| Driver enable to output low | tDZL | | 70 | 160 | ns | | 4 |
| Driver input low to disable | tDLZ | | 70 | 100 | ns | CL = 15 pF，S2 闭合（见图 5、6） | 4 |
| Driver input high to disable | tDHZ | | 70 | 100 | ns | | 4 |
| Driver enable to output high, in shutdown | tDZH(SHDN) | | 80 | 120 | ns | CL = 15 pF,S2 闭合（见图 5、6） | 4 |
| Driver enable to output low, in shutdown | tDZL(SHDN) | | 80 | 120 | ns | CL = 15 pF,S1 闭合（见图 5、6） | 4 |
| Receiver propagation delay, low to high | tRPLH | | 50 | 80 | ns | 见图 7 与图 8，VID≥2.0V；上升与下降沿时间 VID≤15ns | 5 |
| Receiver propagation delay, high to low | tRPHL | | 50 | 80 | ns | | 5 |
| Receiver propagation delay skew | tSKEW2 | | 5 | 15 | ns | | 5 |
| Receiver enable to output low | tRZL | | 25 | 40 | ns | CL = 100 pF，S1 闭合(见图 9，10) | 5 |
| Receiver enable to output high | tRZH | | 25 | 40 | ns | CL = 100 pF，S2 闭合(见图 9，10) | 5 |
| Receiver output low to disable | tRLZ | | 25 | 50 | ns | CL = 100 pF,S1 闭合(见图 9，10) | 5 |
| Receiver output high to disable | tRHZ | | 25 | 50 | ns | CL= 100pF，S2 闭合(见图 9,10) | 5 |
| Receiver enable to output high, in shutdown | tRZH(SHDN) | | | 1000 | ns | CL = 100 pF，S2 闭合(见图 9,10) | 5 |
| Receiver enable to output low, in shutdown | tRZL(SHDN) | | | 1000 | ns | CL= 100 pF，S1 闭合(见图 9，10) | 5 |
| Time to enter shutdown | tSHDN | 50 | 200 | 600 | ns | /RE=1，DE=0 持续时间 (NOTE2) | 5 |
| ESD HBM, A and B pins | | -16 | | 16 | KV | A、B 人体模型（HBM） | 4 |
| ESD contact discharge, A and B pins | | -16 | | 16 | KV | A、B 接触放电 | 4 |
| ESD HBM, other ports | | -6 | | 6 | KV | 其它端口 人体模型（HBM） | 4 |
| Driver differential output (no load) | VOD1 | | 5 | | V | | 3 |
| Receiver input resistance | RIN | | 96 | | kΩ | -7V≦VCM≦12V | 4 |
| Thermal shutdown threshold temperature | | | 150 | | ℃ | | 3 |
| Thermal shutdown hysteresis temperature | | | 20 | | ℃ | | 3 |
## CAD (KiCad official)
- Symbol: `SP3085EIMM`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `sp3085eimm-etched.step` / `sp3085eimm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sp3085eimm.step` / `sp3085eimm.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8770707257858777088) (13 pp, sha256 `467b978ccfded829`, 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`, 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](docs/sp3085eimm-datasheet.pdf)