component

MAX487ESA-JSM

Public Made by Adom

by adom

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

componentinterfacemax487esa-jsmfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 17d ago
viewers max487esa-jsm: viewers · Ray 17d ago
max487esa-jsm-etched.glb Publish 0.1.0 · Ray 17d ago
max487esa-jsm-etched.step max487esa-jsm: factory component page (tier=lcsc) · Ray 17d ago
max487esa-jsm-hero.glb max487esa-jsm: hero GLB from the etched model (keeps the MPN mark) · Ray 17d ago
max487esa-jsm-hero.overlay.json Publish 0.1.0 · Ray 17d ago
max487esa-jsm.glb Publish 0.1.0 · Ray 17d ago
max487esa-jsm.kicad_mod Publish 0.1.0 · Ray 17d ago
max487esa-jsm.kicad_sym Publish 0.1.0 · Ray 17d ago
max487esa-jsm.lbr Publish 0.1.0 · Ray 17d ago
max487esa-jsm.step Publish 0.1.0 · Ray 17d ago
package.json Publish 0.1.0 · Ray 17d ago
page.json Set visibility: public · Ray 17d ago
README.md Publish 0.1.0 · Ray 17d ago

MAX487ESA-JSM

JSMSEMI · RS-485 / RS-422 ICs · SOP-8

MAX487ESA-JSM from JSMSEMI, 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: with /RE low, RO goes high when A - B >= 200 mV and goes low when A - B <= -200 mV.
2 /RE input Receiver enable control: the receiver is active when /RE is low and disabled when /RE is high.
3 DE input Driver enable control: the driver is active when DE is high and disabled when DE is low.
4 DI input Driver input: with DE high, DI low drives A low and B high, and DI high drives A high and B low.
5 GND power_in Ground reference pin.
6 A bidirectional Receiver non-inverting input and driver inverting output on the RS-485/RS-422 bus.
7 B bidirectional Receiver inverting input and driver inverting output on the RS-485/RS-422 bus.
8 VCC power_in Supply pin, normally connected to a 5 V supply; absolute maximum supply voltage is -0.3 V to 8.0 V.

Key specifications

Parameter Value
Manufacturer JSMSEMI
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 -0.3 8 V 2
Control input voltage /RE, DE -0.3 V 2
Receiver output voltage RO -0.3 V 2
Driver input voltage DI -0.3 V 2
Operating temperature TOP TOP -40 85 oC 2
Storage temperature TSTO TSTO -65 150 oC 2
Control input high voltage /RE, DE, DI 2 V 2
Control input low voltage /RE, DE, DI 0.8 V 2
Receiver input voltage A, B -7 12 V 2
Operating temperature -40 85 oC 2
Differential driver output (RL=27) VOD2 1.5 V Fig.1, RL= 27 3
Change in magnitude of differential output VOD 0.2 V Fig.1, RL= 27 3
Driver common-mode output voltage VOC 3 V Fig.1, RL= 27 3
Input signal high level VIH 2 V DE, DI, REB 3
Input signal low level VIL 0.8 V DE, DI, REB 3
Control pin input current IIN1 -2 2 μA DE, DI, REB 3
A/B pin input current IIN2 1 mA DE=0, Vcc=0V or 5.25V; VIN=12V 3
A/B pin input current IIN2 -0.8 mA DE=0, Vcc=0V or 5.25V; VIN=-7V 3
Output short-circuit current IOSD -250 250 mA -7V VOUT 12V 3
Receiver differential threshold voltage VTH -200 200 mV 3
Receiver output low voltage VOL 0.4 V Io= 4mA, VID= -200mV 3
Receiver input resistance RIN 32 k -7V VCM +12V 3
Receiver short-circuit current IOSR 7 95 mA Fig. 6, 0V VRO Vcc 3
Supply current (DE=Vcc) Icc 500 900 μA No load, /RE= GND, DI= Vcc or GND. DE= Vcc 3
Supply current (DE=GND) Icc 300 500 μA No load, /RE= GND, DI= Vcc or GND. DE= GND 3
Driver rise or fall time tDF, tDR 10 30 60 ns Fig.5 and 7, RDIFF=54, CL1=CL2= 100pF 4
Data rate fData 250 Kbps 4
Driver enable to output low tDZL 70 ns CDL= 100pF, S1 关闭 4
Driver enable to output high tDZH 70 ns CDL= 100pF, S2 关闭 4
Driver low to disable tDLZ 70 ns CDL= 15pF, S1 关闭 4
Driver high to disable tDHZ 70 ns CDL= 15pF, S2 关闭 4
Receiver input to output propagation delay tRPLH, tRPHL 120 200 ns VID 2.0V; VID 15ns rise and fall time 4
Receiver enable to output low tRZL 20 50 ns CRL= 15pF, S1 关闭 4
Receiver enable to output high tRZH 20 50 ns CRL= 15pF, S2 关闭 4
Receiver low to disable tRLZ 20 50 ns CRL= 15pF, S1 关闭 4
Receiver high to disable tRHZ 20 50 ns CRL= 15pF, S2 关闭 4

CAD (KiCad official)

  • Symbol: MAX487ESA-JSM
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: max487esa-jsm-etched.step / max487esa-jsm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max487esa-jsm.step / max487esa-jsm.glb are the bare package body.

Provenance

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

  • Datasheet: JSMSEMI datasheet (12 pp, sha256 909b1032f31deb7c, 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