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ISL3155EIUZ-T-TUDI
Public Made by Adomby adom
Tudi RS-485 / RS-422 ICs, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownISL3155EIUZ-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);isl3155eiuz-t-tudi.step/isl3155eiuz-t-tudi.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).