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SL485N

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

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SL485N

Slkor SLKORMICRO Elec · RS-485 / RS-422 ICs · SOP-8

SL485N from Slkor SLKORMICRO Elec, 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; the datasheet states it drives logic high when the receiver inputs are open or shorted (fail-safe), and it is high-impedance when RE is high. RO is rated from -0.3 V to VCC+0.3 V.
2 RE input Receiver enable, active low; driving it high puts RO into high-impedance. Absolute control input range is -0.5 V to +6.0 V.
3 DE input Driver enable, active high; when low the driver outputs are high-impedance, and when high the device operates in transmit mode. Absolute control input range is -0.5 V to +6.0 V.
4 DI input Driver data input that sets the differential state of L1/L2 while the driver is enabled. Absolute input range is -0.5 V to +6.0 V.
5 GND power_in Ground reference for all device voltages; the datasheet states all voltages are referenced to ground.
6 L1 bidirectional Receiver input and driver output (bus line A); bus voltage range is -7 V to +12 V, with ±15 kV HBM ESD protection between L1 and L2.
7 L2 bidirectional Receiver input and driver output (bus line B); bus voltage range is -7 V to +12 V, with ±15 kV HBM ESD protection between L1 and L2.
8 VCC power_in Supply pin; absolute maximum is +6.0 V and the datasheet specifies operation at 5 V ±5%.

Key specifications

Parameter Value
Manufacturer Slkor SLKORMICRO Elec
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 6 V 3
Control input voltage (DE, RE) -0.5 6 V 3
Driver input voltage (DI) -0.5 6 V 3
Driver output voltage (L1, L2) -7 12 V 3
Receiver input voltage (L1, L2) -7 12 V 3
Receiver output voltage (RO) -0.3 V 3
Storage temperature range TSTG -65 160 ℃ 3
Operating temperature range TOP -40 85 ℃ 3
Continuous power dissipation, 8-pin plastic SOP 470 mW Above +70℃ 3
Soldering temperature 300 ℃ 10 s 3
Driver differential output, no load VOD1 5 V 4
Driver differential output, loaded VOD2 2 3 V Fig 1, R=50Ω or R=27Ω 4
Change in magnitude of driver differential output voltage ΔVOD 0.2 V 4
Driver common-mode output voltage VOC 3 V 4
Change in magnitude of driver common-mode output voltage ΔVOC 0.2 V 4
Input high voltage VIH 2 V DE, RE, DI 4
Input low voltage VIL 0.8 V DE, RE, DI 4
Input current IIN1 -2 2 uA DE, RE, DI 4
Input current (L1, L2) IIN2 40 90 uA DE=0V, Vcc=5V, VIN=5V 4
Input current (L1, L2) IIN2 60 100 uA DE=0V, Vcc=5V, VIN=0V 4
Receiver differential input threshold voltage VTH -100 100 mV -7V ≤ VCM ≤ +12V 4
Receiver output low voltage VOL 0.4 V IO=4mA 4
Receiver tri-state (high-impedance) output current IOZR -1 1 uA 0.4V ≤ Vo ≤ 2.4V 4
Receiver input impedance RIN 96 kΩ -7V ≤ VCM ≤ +12V 4
No-load supply current ICC 480 800 uA No load, RE=DI=GND or Vcc, DE=Vcc 4
No-load supply current ICC 450 700 uA DE=GND 4
Receiver output short-circuit current IOSR -80 80 mA 0V ≤ VRO ≤ VCC 4
ESD protection, L1 to L2, human body model -15 15 kV Between L1 and L2, human body model 4
Driver input to output propagation delay (low-to-high) tDPLH 250 1000 nS Fig 3 and 5, RDIFF=50Ω, CL1=CL2=100pF 5
Driver input to output propagation delay (high-to-low) tDPHL 250 1000 nS 5
Driver output skew /tDPLH - tDPHL/ tDSKEW -100 -3 100 nS 5
Driver rise time tDR 200 750 nS 5
Driver fall time tDF 200 750 nS 5
Driver enable to output high tDZH 2500 nS Fig 4 and 6, CL=100pF, S2 closed 5
Driver enable to output low tDZL 2500 nS Fig 4 and 6, CL=100pF, S1 closed 5
Driver disable from low tDLZ 100 nS Fig 4 and 6, CL=15pF, S1 closed 5
Driver disable from high tDHZ 100 nS Fig 4 and 6, CL=15pF, S2 closed 5
Receiver input to output propagation delay (low-to-high) tRPLH 200 nS Fig 7 and 9, /VID/ ≥ 2.0V; VID rise/fall time ≤15nS 5
Receiver input to output propagation delay (high-to-low) tRPHL 200 nS 5
Differential receiver skew /tRPLH - tRPHL/ tRSKEW -30 3 30 nS 5
Receiver enable to output low tRZL 20 50 nS Fig 2 and 8, CL=100pF, S1 closed 5
Receiver enable to output high tRZH 20 50 nS Fig 2 and 8, CL=100pF, S2 closed 5
Receiver disable from low tRLZ 20 50 nS Fig 2 and 8, CL=100pF, S1 closed 5
Receiver disable from high tRHZ 20 50 nS Fig 2 and 8, CL=100pF, S2 closed 5
Polarity switch flip wait time Ts 45 65 80 ms DE=RE=0, RO low 5

CAD (KiCad official)

  • Symbol: SL485N
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: sl485n-etched.step / sl485n-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sl485n.step / sl485n.glb are the bare package body.

Provenance

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

  • Datasheet: Slkor SLKORMICRO Elec datasheet (10 pp, sha256 ef9225825518ead9, 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, 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