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ISL3155EIUZ-T-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.

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ISL3155EIUZ-T-TUDI

Tudi · RS-485 / RS-422 ICs · MSOP-8

ISL3155EIUZ-T-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, high-impedance when /RE is high.
2 /RE input Receiver output enable, active low; /RE high with DE low puts the device in low-power shutdown.
3 DE input Driver output enable, active high, high-impedance outputs when low; DE low with /RE high enters shutdown.
4 DI input Driver input, with DE high a low on DI drives A low and B high, 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, with ±15kV ESD protection.
7 B bidirectional Inverting receiver input and inverting driver output, with ±15kV ESD protection.
8 VCC power_in Power supply, operating range 4.75V to 5.25V.

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 3
Control port voltage /RE, DE, DI -0.3 V 3
Bus pin input voltage A, B -7 13 V 3
Receiver output voltage RO -0.3 V 3
Operating temperature range -40 85 °C 3
Storage temperature range -60 150 °C 3
Soldering temperature range 300 °C 3
Continuous power dissipation 400 mW SOP8 package 3
Supply voltage range VCC 4.75 5.25 V 2
Driver rise/fall time tDR, tDF 200 500 700 ns 5
Driver skew /tDPLH - tDPHL/ tSKEW1 -100 100 ns 5
Tri-state input leakage current IOZR -1 1 uA 0.4 V < VO < 2.4 V 5
Logic input current IIN1 -2 2 uA DE, DI, /RE 4
Receiver input current (A, B) IIN2 125 uA DE = 0 V, VCC = 0 or 5 V, VIN = 12 V 4
Receiver input current (A, B) IIN2 -100 uA DE = 0 V, VCC = 0 or 5 V, VIN = -7 V 4
Driver output short-circuit current, short to high IOSD1 35 250 mA short to 0V~12 V 4
Driver output short-circuit current, short to low IOSD2 -250 -35 mA short to -7V~0V 4
Supply current ICC 180 500 uA /RE=0V or VCC, DE = 0 5
Supply current ICC 170 400 uA /RE=VCC, DE=VCC 5
Shutdown current ISHDN 0.5 10 uA DE=0 V, /RE=VCC 5
Shutdown exit time tSHDN 50 200 600 ns /RE=1, DE=0 (NOTE2) 6
Receiver propagation delay, low to high tRPLH 127 200 ns VID≥2.0V; rise and fall time VID≤15 ns 6
Receiver propagation delay, high to low tRPHL 127 200 ns 6
Receiver skew /tRPLH - tRPHL/ tSKEW2 3 30 ns 6
Enable to output low time tRZL 20 50 ns CL = 100 pF, S1 closed 6
Enable to output high time tRZH 20 50 ns CL = 100 pF, S2 closed 6
Output low to disable time tRLZ 20 50 ns CL = 100 pF, S1 closed 6
Output high to disable time tRHZ 20 50 ns CL = 100 pF, S2 closed 6

CAD (KiCad official)

  • Symbol: ISL3155EIUZ-T-TUDI
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: isl3155eiuz-t-tudi-etched.step / isl3155eiuz-t-tudi-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); isl3155eiuz-t-tudi.step / isl3155eiuz-t-tudi.glb are the bare package body.

Provenance

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

  • Datasheet: Tudi datasheet (10 pp, sha256 e9d7e24ac7e5473a, retrieved 2026-10-17, 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