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ADM485ARMZ-TUDI

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

componentinterfaceadm485armz-tudifactory-2.0.0extractor-text

Verified ADM485ARMZ-TUDI

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier lcsc, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ADM485ARMZ-TUDI · MSOP-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 9-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: MSOP-8_3x3mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-brpuvofu/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ adm485armz-tudi.kicad_sym✓ adm485armz-tudi.kicad_mod✓ adm485armz-tudi.step
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Ray Publish 0.1.0 b28a798 5d ago

ADM485ARMZ-TUDI

Tudi · RS-485 / RS-422 ICs · MSOP-8

ADM485ARMZ-TUDI from Tudi, 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: high when A-B >= -50mV and low when A-B <= -200mV while /RE is low, and high-impedance when /RE is high.
2 /RE input Receiver output enable, active low: low enables RO, high puts RO in high-impedance, and /RE high with DE low enters low-power shutdown.
3 DE input Driver output enable: high enables the driver outputs, low puts them in high-impedance, and DE low with /RE high enters low-power shutdown.
4 DI input Driver input: with DE 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.
6 A bidirectional Non-inverting receiver input and non-inverting driver output (bus range -7V to 13V).
7 B bidirectional Inverting receiver input and inverting driver output (bus range -7V to 13V).
8 VCC power_in Power supply, 4.75V to 5.25V operating, absolute maximum +7V.

Key specifications

Parameter Value
Manufacturer Tudi
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
Supply voltage VCC 7 V 2
Bus pin input voltage (A, B) -7 13 V 2
Control port input voltage (/RE, DE, DI) -0.3 V 2
Receiver output voltage (RO) -0.3 V 2
Operating temperature range TA -40 85 ℃ 2
Storage temperature range -60 150 ℃ 2
Soldering temperature 300 ℃ 2
Continuous power dissipation 400 mW SOP8 package as printed 2
Supply voltage operating range VCC 4.75 5.25 V 5 V ±5%, per text 1
Driver output common-mode voltage VOC 3 V Fig. 2, RL = 27 Ω 3
Change in differential output voltage magnitude ΔVOD 0.2 V Fig. 2, RL = 27 Ω; NOTE1 3
Change in common-mode output voltage magnitude ΔVOC 0.2 V Fig. 2, RL = 27 Ω; NOTE1 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 35 250 mA shorted to 0 V to 12 V 3
Output short-circuit current, shorted to low IOSD2 -250 -35 mA shorted to -7 V to 0 V 3
Receiver input current (A, B) at VIN = 12 V IIN2 125 uA DE = 0 V, VCC = 0 or 5 V, VIN = 12 V 3
Receiver input current (A, B) at VIN = -7 V IIN2 -100 uA DE = 0 V, VCC = 0 or 5 V, VIN = -7 V 3
Positive input threshold voltage VIT+ -50 mV -7 V ≤ VCM ≤ 12 V 3
Negative input threshold voltage VIT- -200 mV 3
Input hysteresis voltage Vhys 10 30 mV -7 V ≤ VCM ≤ 12 V 3
Low-level output voltage VOL 0.4 V IOUT = +4 mA, VID = -200 mV 3
Three-state output leakage current IOZR -1 1 uA 0.4 V < VO < 2.4 V 4
Receiver input resistance RIN 96 kΩ -7 V ≤ VCM ≤ 12 V 4
Receiver short-circuit current IOSR 7 95 mA 0 V ≤ VO ≤ VCC 4
Supply current (/RE = 0 V or VCC, DE = 0) ICC 180 500 uA /RE = 0 V or VCC, DE = 0 4
Supply current (/RE = VCC) ICC 170 400 uA /RE = VCC 4
Shutdown supply current ISHDN 0.5 10 uA DE = 0 V, /RE = VCC 4
Driver propagation delay, low to high tDPLH 1000 ns RDIFF = 54 Ω, CL1 = CL2 = 100 pF (Fig. 3, 4) 4
Driver propagation delay, high to low tDPHL 1000 ns RDIFF = 54 Ω, CL1 = CL2 = 100 pF (Fig. 3, 4) 4
Driver propagation delay skew tSKEW1 -100 100 ns /tDPLH - tDPHL/ 4
Driver rise and fall time tDR, tDF 200 500 700 ns 4
Driver enable to output high tDZH 2500 ns CL = 100 pF, S1 closed (Fig. 5, 6) 4
Driver enable to output low tDZL 2500 ns 4
Driver input low to disable tDLZ 100 ns CL = 15 pF, S2 closed (Fig. 5, 6) 4
Driver input high to disable tDHZ 100 ns CL = 15 pF, S2 closed (Fig. 5, 6) 4
Driver enable to output high, shutdown tDZH(SHDN) 4500 ns CL = 15 pF, S2 closed (Fig. 5, 6) 4
Driver enable to output low, shutdown tDZL(SHDN) 4500 ns CL = 15 pF, S1 closed (Fig. 5, 6) 4
Receiver propagation delay, low to high tRPLH 127 200 ns VID ≥ 2.0 V; rise/fall time ≤ 15 ns (Fig. 7, 8) 5
Receiver propagation delay, high to low tRPHL 127 200 ns (Fig. 7, 8) 5
Receiver propagation delay skew tSKEW2 3 30 ns (Fig. 7, 8) 5
Receiver enable to output low tRZL 20 50 ns CL = 100 pF, S1 closed (Fig. 9, 10) 5
Receiver enable to output high tRZH 20 50 ns CL = 100 pF, S2 closed (Fig. 9, 10) 5
Receiver output low to disable tRLZ 20 50 ns CL = 100 pF, S1 closed (Fig. 9, 10) 5
Receiver output high to disable tRHZ 20 50 ns CL = 100 pF, S2 closed (Fig. 9, 10) 5
Receiver enable to output high, shutdown tRZH(SHDN) 3500 ns CL = 100 pF, S2 closed (Fig. 9, 10) 5
Receiver enable to output low, shutdown tRZL(SHDN) 3500 ns CL = 100 pF, S1 closed (Fig. 9, 10) 5
Time to enter shutdown tSHDN 50 200 600 ns NOTE2 5

CAD (KiCad official)

  • Symbol: ADM485ARMZ-TUDI
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: adm485armz-tudi-etched.step / adm485armz-tudi-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adm485armz-tudi.step / adm485armz-tudi.glb are the bare package body.

Provenance

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

  • Datasheet: Tudi datasheet (9 pp, sha256 60380ebc18eded6e, retrieved 2026-11-05, 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: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF