component

CS4585EO

Public Made by Adom

by adom

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

componentcommunication interface chipcs4585eofactory-2.0.0extractor-text

Verified CS4585EO

by Ray · last 13 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

13 Nov 2026RayPublished by the parts factory: tier lcsc, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • •array (skip): not an array of element pairs
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: CS4585EO · SOP-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 13-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOIC-8_3.9x4.9mm_P1.27mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-zlqgs7yw/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.10)
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓symbol_text: no pin names collide
  • ✓viewers: viewers/footprint.html 24 kB, viewers/symbol.html 10 kB
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ cs4585eo.kicad_sym✓ cs4585eo.kicad_mod✓ cs4585eo.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray
viewers cs4585eo: viewers rendered from the public page · Ray
cs4585eo-etched.glb cs4585eo: factory component page (tier=lcsc) · Ray
cs4585eo-etched.step cs4585eo: factory component page (tier=lcsc) · Ray
cs4585eo-hero.glb cs4585eo: hero GLB from the etched model (keeps the MPN mark) · Ray
cs4585eo-hero.overlay.json cs4585eo: hero GLB from the etched model (keeps the MPN mark) · Ray
cs4585eo.glb Publish 0.1.0 · Ray
cs4585eo.kicad_mod Publish 0.1.0 · Ray
cs4585eo.kicad_sym Publish 0.1.0 · Ray
cs4585eo.lbr Publish 0.1.0 · Ray
cs4585eo.step Publish 0.1.0 · Ray
package.json Publish 0.1.0 · Ray
page.json Set visibility: public · Ray
README.md Publish 0.1.0 · Ray
verification.json Verified: Published by the parts factory: tier lcsc, 8 pins · Ray

CS4585EO

CRMICRO · RS-485/RS-422 ICs · SOP-8

CS4585EO from CRMICRO, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). Symbol and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

Pinout

Pin Name Type Function
1 RO output Receiver output (tri-state) that is high when A-B ≥ -0.05V or when A and B are open or shorted, and low when A-B ≤ -0.2V.
2 RE input Active-low receiver output enable that enables RO when low and puts RO in high impedance when high.
3 DE input Driver output enable that enables the driver outputs when high and puts them in high impedance when low.
4 DI input Driver input where DI low gives A low and B high, and DI high gives A high and B low.
5 GND power_in Ground.
6 A bidirectional Receiver input and driver output (non-inverting RS-485 bus line) with ±15kV HBM ESD protection and a -7V to +12V common-mode range.
7 B bidirectional Receiver input and driver output (inverting RS-485 bus line) with ±15kV HBM ESD protection and a -7V to +12V common-mode range.
8 VDD power_in Power supply, 5V ±5% operating with an absolute maximum of -0.3 to 7V.

Key specifications

Parameter Value
Manufacturer CRMICRO
Package SOP-8
Category Communication Interface Chip
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 VDD -0.3 7 V 5
A/B input/output voltage VINA/B / VOUTA/B -13 13 V 5
Operating ambient temperature Tamb -40 85 ℃ 5
Storage temperature Tstg -65 150 ℃ 5
Differential output voltage (no load) VOD1 5 V VDD=5V 5%, Tamb=25℃; 无负载 5
Differential output voltage (RS-422 load) VOD2 2 V VDD=5V 5%, Tamb=25℃; R=50Ω（RS-422）(1) 5
Differential output voltage (RS-485 load) VOD2 1.5 V VDD=5V 5%, Tamb=25℃; R=27Ω（RS-485）(1) 5
Change in differential output voltage magnitude ΔVOD 0.01 0.2 V VDD=5V 5%, Tamb=25℃; R=50Ω or 27Ω(1) 5
Common-mode output voltage VOC 3 V VDD=5V 5%, Tamb=25℃; R=50Ω or 27Ω(1) 5
Change in common-mode output voltage magnitude ΔVOC 0.01 0.2 V VDD=5V 5%, Tamb=25℃; R=50Ω or 27Ω(1) 5
Digital input high-level voltage VIH1 2 V VDD=5V 5%, Tamb=25℃; DE、RE、DI 5
Digital input low-level voltage VIL1 0.8 V VDD=5V 5%, Tamb=25℃; DE、RE、DI 5
Digital input current IIN1 -2 2 A VDD=5V 5%, Tamb=25℃; DE、RE、DI 5
A/B input current IIN2 125 A VDD=5V 5%, Tamb=25℃; DE=GND, VDD=GND or 5.25V, Vin=12V 5
A/B input current IIN2 -75 A VDD=5V 5%, Tamb=25℃; DE=GND, VDD=GND or 5.25V, Vin=-7V 5
Driver output short-circuit current IOD1 -250 mA VDD=5V 5%, Tamb=25℃; -7V≤VOUT≤VDD 5
Driver output short-circuit current IOD1 250 mA VDD=5V 5%, Tamb=25℃; 0V≤VOUT≤12V 5
Driver output short-circuit current IOD1 -25 25 mA VDD=5V 5%, Tamb=25℃; 0V≤VOUT≤VDD 5
Differential receiver threshold voltage VTH -200 -125 -50 mV VDD=5V 5%, Tamb=25℃; -7V≤VCM≤12V 5
Receiver output high voltage VOH 3.5 V VDD=5V 5%, Tamb=25℃; IO=-4mA, VID=-50mV 5
Receiver output low voltage VOL 0.4 V VDD=5V 5%, Tamb=25℃; IO=4mA, VID=-200mV 5
Receiver three-state output current IOZR 1 A VDD=5V 5%, Tamb=25℃; 0.4V≤VO≤2.4V 5
Receiver input resistance RIN 96 kΩ VDD=5V 5%, Tamb=25℃; -7V≤VCM≤12V 5
Receiver output short-circuit current IOSR 7 95 mA VDD=5V 5%, Tamb=25℃; 0V≤VRO≤VDD 5
Operating supply current (driver enabled) ICC 430 900 A VDD=5V 5%, Tamb=25℃; 无负载，RE=DI=GND or VDD, DE=VDD 5
Operating supply current (driver disabled) ICC 375 600 A VDD=5V 5%, Tamb=25℃; 无负载，RE=DI=GND or VDD, DE=GND 5
Shutdown mode supply current ISHDN 0.001 10 A VDD=5V 5%, Tamb=25℃; DE=GND, RE=VDD 5
ESD protection (A/B) Human Body Model ESD 15 kV VDD=5V 5%, Tamb=25℃; Human Body Model 5
Driver input-to-output delay (limited slew) tDPLH 250 720 1000 ns VDD=5V 5%, Tamb=25℃; RDIFF=54Ω, CL1=CL2=100pF(2) 6
Driver propagation delay skew (limited slew) tDSKEW -3 100 ns VDD=5V 5%, Tamb=25℃; RDIFF=54Ω, CL1=CL2=100pF(2) 6
Driver rise/fall time (limited slew) tDR,tDF 200 530 750 ns VDD=5V 5%, Tamb=25℃; RDIFF=54Ω, CL1=CL2=100pF(2) 6
Maximum data rate (limited slew) fMAX 500 kbps VDD=5V 5%, Tamb=25℃ 6
Driver enable delay to high (limited slew) tDZH 2500 ns VDD=5V 5%, Tamb=25℃; CL=100pF, S2 closed(3) 6
Driver enable delay to low (limited slew) tDZL 2500 ns VDD=5V 5%, Tamb=25℃; CL=100pF, S1 closed(3) 6
Driver disable delay from low (limited slew) tDLZ 100 ns VDD=5V 5%, Tamb=25℃; CL=15pF, S1 closed(3) 6
Driver disable delay from high (limited slew) tDHZ 100 ns VDD=5V 5%, Tamb=25℃; CL=15pF, S2 closed(3) 6
Receiver input-to-output delay low-to-high (limited slew) tRPLH 127 200 ns VDD=5V 5%, Tamb=25℃; /VID/≥2.0V, rise/fall time≤15ns(4) 6
Receiver input-to-output delay high-to-low (limited slew) tRPHL 127 200 ns VDD=5V 5%, Tamb=25℃; /VID/≥2.0V, rise/fall time≤15ns(4) 6
Receiver propagation delay skew (limited slew) tRSKD 3 30 ns VDD=5V 5%, Tamb=25℃; /VID/≥2.0V, rise/fall time≤15ns(4) 6
Receiver enable delay to low (limited slew) tRZL 20 50 ns VDD=5V 5%, Tamb=25℃; CL=100pF, S1 closed(5) 6
Receiver enable delay to high (limited slew) tRZH 20 50 ns VDD=5V 5%, Tamb=25℃; CL=100pF, S2 closed(5) 6
Receiver disable delay from low (limited slew) tRLZ 20 50 ns VDD=5V 5%, Tamb=25℃; CL=100pF, S1 closed(5) 6
Receiver disable delay from high (limited slew) tRHZ 20 50 ns VDD=5V 5%, Tamb=25℃; CL=100pF, S2 closed(5) 6
Shutdown mode enable time (limited slew) tSHDN 50 200 600 ns VDD=5V 5%, Tamb=25℃ 6
Driver wake-up delay to high (limited slew) tDZH(SHDN) 4500 ns VDD=5V 5%, Tamb=25℃; CL=15pF, S2 closed(3) 6
Driver wake-up delay to low (limited slew) tDZL(SHDN) 4500 ns VDD=5V 5%, Tamb=25℃; CL=15pF, S1 closed(3) 6
Receiver wake-up delay to high (limited slew) tRZH(SHDN) 3500 ns VDD=5V 5%, Tamb=25℃; CL=100pF, S2 closed(5) 6
Receiver wake-up delay to low (limited slew) tRZL(SHDN) 3500 ns VDD=5V 5%, Tamb=25℃; CL=100pF, S1 closed(5) 6
Driver input-to-output delay (unlimited slew) tDPLH 34 60 ns VDD=5V 5%, Tamb=25℃; RDIFF=54Ω, CL1=CL2=100pF(2) 6
Driver propagation delay skew (unlimited slew) tDSKEW -2.5 10 ns VDD=5V 5%, Tamb=25℃; RDIFF=54Ω, CL1=CL2=100pF(2) 6
Driver rise/fall time (unlimited slew) tDR, tDF 14 25 ns VDD=5V 5%, Tamb=25℃; RDIFF=54Ω, CL1=CL2=100pF(2) 6
Maximum data rate (unlimited slew) fMAX 10 Mbps VDD=5V 5%, Tamb=25℃ 6
Receiver input-to-output delay low-to-high (unlimited slew) tRPLH 106 150 ns VDD=5V 5%, Tamb=25℃; /VID/≥2.0V, rise/fall time≤15ns(4) 7
Receiver input-to-output delay high-to-low (unlimited slew) tRPHL 106 150 ns VDD=5V 5%, Tamb=25℃; /VID/≥2.0V, rise/fall time≤15ns(4) 7
Receiver propagation delay skew (unlimited slew) tRSKD 0 10 ns VDD=5V 5%, Tamb=25℃; /VID/≥2.0V, rise/fall time≤15ns(4) 7
Driver wake-up delay to high (unlimited slew) tDZH(SHDN) 250 ns VDD=5V 5%, Tamb=25℃; CL=15pF, S2 closed(3) 7
Driver wake-up delay to low (unlimited slew) tDZL(SHDN) 250 ns VDD=5V 5%, Tamb=25℃; CL=15pF, S1 closed(3) 7

CAD (land: KiCad; 3D: generated from the datasheet)

  • Symbol: CS4585EO
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8, generated on the KiCad land (body 3.9 x 4.9 mm, terminals on the pads, 1.4 mm tall, datasheet A, midpoint of min and max). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
  • 3D model files: cs4585eo-etched.step / cs4585eo-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cs4585eo.step / cs4585eo.glb are the bare package body.

Provenance

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

  • Datasheet: CRMICRO datasheet (13 pp, sha256 7a7405a0b6a7ceb0, retrieved 2026-11-13, 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-sonnet-5-5 (text+vision), consensus claude-opus-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: land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

Datasheet PDF