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ES8485E-SR

Public Made by Adom

by adom

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

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ES8485E-SR

ElecSuper · RS-485 / RS-422 ICs · SOP-8

ES8485E-SR from ElecSuper, 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: when /RE is low, RO is high if A-B ≥ -10mV and low if A-B ≤ -200mV, and it is high-impedance when /RE is high.
2 /RE input Active-low receiver output enable: low enables RO, high disables RO to high-impedance, and /RE high with DE low puts the device into low-power shutdown.
3 DE input Driver output enable: high enables the driver outputs, low sets them to high-impedance, and /RE high with DE low 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 this pin.
6 A bidirectional Non-inverting bus terminal that serves as the receiver non-inverting input and the driver non-inverting output; bus fault tolerance is ±15V.
7 B bidirectional Inverting bus terminal that serves as the receiver inverting input and the driver inverting output; bus fault tolerance is ±15V.
8 VCC power_in Power supply input, specified for 3.0V to 5.5V operation with an absolute maximum of +6.5V.

Key specifications

Parameter Value
Manufacturer ElecSuper
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 6.5 V 3
Control port input voltage (/RE, DE, DI) -0.3 V 3
Bus-side input voltage (A, B) -15 15 V 3
Receiver output voltage (RO) -0.3 V 3
Operating temperature range TA -40 125 ℃ 3
Storage temperature range Tstg -60 150 ℃ 3
Soldering temperature range 300 ℃ 3
Driver differential output voltage (no load) VOD1 3 5.5 V 无负载 3
Driver differential output voltage VOD2 1.5 V RL = 54 Ω, VCC=3.3V 3
Change in magnitude of differential output voltage (NOTE1) ΔVOD 0.2 V RL = 54 Ω 3
Common-mode output voltage VOC 3 V RL = 54 Ω 3
Change in magnitude of common-mode output voltage (NOTE1) ΔVOC 0.2 V RL = 54 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
Output short-circuit current, shorted to high IOSD1 250 mA short-circuit to 0V~12V 3
Output short-circuit current, shorted to low IOSD2 -250 mA short-circuit to -7V~0V 3
Receiver input current (A, B) IIN2 -100 uA DE = 0 V, VCC=0 or 3.3/5V, VIN = -7V 4
Receiver input current (A, B) IIN2 125 uA DE = 0 V, VCC=0 or 3.3/5V, VIN = 12 V 4
Positive-going input threshold voltage VIT+ -10 mV -7V≤VCM≤12V 4
Negative-going 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 = +2.5mA, VID = -200 mV 4
Three-state input leakage current IOZR -1 1 uA 0.4V<VO<2.4V 4
Receiver input resistance RIN 96 kΩ -7V≤VCM≤12V 4
Receiver short-circuit current IOSR -90 90 mA 0 V≤VO≤VCC 4
Supply current ICC1 240 650 uA /RE=0V, DE = 0 V, VCC=3.3V 4
Supply current ICC1 270 750 uA /RE=0V, DE = 0 V, VCC=5V 4
Supply current ICC2 250 650 uA /RE=VCC, DE=VCC, VCC=3.3V 4
Supply current ICC2 280 750 uA /RE=VCC, DE=VCC, VCC=5V 4
Shutdown current ISHDN 0.2 10 uA /RE= VCC, DE=0V, VCC=3.3V 4
Driver differential output delay tDD 20 40 ns RL=60Ω, CL=100pF 5
Driver differential output transition time tTD 12 28 ns 5
Driver propagation delay, low to high tPLH 20 40 ns RL=27Ω 5
Driver propagation delay, high to low tPHL 20 40 ns 5
Driver propagation delay skew /tPLH - tPHL/ tPDS 1 8 ns 5
Enable to output high tPZH 55 ns RL=110Ω 5
Enable to output low tPZL 55 ns 5
Input high to disable tPHZ 85 ns RL=110Ω 5
Input low to disable tPLZ 85 ns 5
Enable to output high in shutdown tPSH 20 100 ns RL=110Ω 5
Enable to output low in shutdown tPSL 20 100 ns RL=110Ω 5
Receiver propagation delay, low to high tRPLH 60 ns CL=15pF 5
Receiver propagation delay, high to low tRPHL 60 ns 5
Receiver propagation delay skew /tRPLH - tRPHL/ tRPDS 3 10 ns CL=15pF 5
Enable to output low time tPRZL 15 40 ns CL=15pF 5
Enable to output high time tPRZH 15 40 ns CL=15pF 6
Output high to disable time tRPHZ 25 55 ns CL=15pF 6
Output low to disable time tPRLZ 25 55 ns CL=15pF 6
Enable to output low time in shutdown tPRSL 150 500 ns CL=15pF 6
Enable to output high time in shutdown tPRSH 150 500 ns CL=15pF 6
Time to enter shutdown tSHDN 50 300 ns NOTE2 6

CAD (KiCad official)

  • Symbol: ES8485E-SR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: es8485e-sr-etched.step / es8485e-sr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); es8485e-sr.step / es8485e-sr.glb are the bare package body.

Provenance

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

  • Datasheet: ElecSuper datasheet (13 pp, sha256 bebca5deb605eb5c, 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