component
ADM1485ARZ-REEL
Public Made by Adomby adom
Analog Devices RS-485 / RS-422 ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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Datasheet
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README
markdownADM1485ARZ-REEL
Analog Devices · RS-485 / RS-422 ICs · SOP-8
ADM1485ARZ-REEL from Analog Devices, 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: RO goes High when A is more than 200 mV above B, and goes Low when A is more than 200 mV below B. |
| 2 | RE | input | Receiver output enable: a low level enables the receiver output RO, and a high level places RO in a high impedance state. |
| 3 | DE | input | Driver output enable: a high level enables the driver differential outputs A and B, and a low level places them in a high impedance state. |
| 4 | DI | input | Driver input: when the driver is enabled, a logic low on DI forces A low and B high, and a logic high on DI forces A high and B low. |
| 5 | GND | power_in | Ground connection, 0 V. |
| 6 | A | bidirectional | Noninverting receiver input A and driver output A; the bus common-mode range is -7 V to +12 V. |
| 7 | B | bidirectional | Inverting receiver input B and driver output B; the bus common-mode range is -7 V to +12 V. |
| 8 | VCC | power_in | Power supply, 5 V ± 5%. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| 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 |
|---|---|---|---|---|---|---|---|
| Differential Output Voltage (R = infinity) | VOD | 5 | V | R = ∞, Test Circuit 1 | 2 | ||
| Differential Output Voltage (RS-422) | VOD | 2 | 5 | V | VCC = 5 V, R = 50 Ω (RS-422), Test Circuit 1 | 2 | |
| Differential Output Voltage (RS-485) | VOD | 1.5 | 5 | V | R = 27 Ω (RS-485), Test Circuit 1 | 2 | |
| Differential Output Voltage with common-mode test voltage | VOD3 | 1.5 | 5 | V | VTST = -7 V to +12 V, Test Circuit 2 | 2 | |
| Change in /VOD/ for complementary output states | Δ/VOD/ | 0.2 | V | R = 27 Ω or 50 Ω, Test Circuit 1 | 2 | ||
| Common-Mode Output Voltage | VOC | 3 | V | R = 27 Ω or 50 Ω, Test Circuit 1 | 2 | ||
| Change in /VOD/ for complementary output states (second entry) | Δ/VOD/ | 0.2 | V | R = 27 Ω or 50 Ω | 2 | ||
| Output Short-Circuit Current (VOUT = High) | 35 | 250 | mA | -7 V ≤ VO ≤ +12 V | 2 | ||
| Output Short-Circuit Current (VOUT = Low) | 35 | 250 | mA | -7 V ≤ VO ≤ +12 V | 2 | ||
| CMOS Input Logic Threshold Low (driver) | VINL | 0.8 | V | 2 | |||
| CMOS Input Logic Threshold High (driver) | VINH | 2 | V | 2 | |||
| Logic Input Current (DE, DI) | -1 | 1 | μA | 2 | |||
| Differential Input Threshold Voltage | VTH | -0.2 | 0.2 | V | -7 V ≤ VCM ≤ +12 V | 2 | |
| Input Resistance | 12 | kΩ | -7 V ≤ VCM ≤ +12 V | 2 | |||
| Input Current (A, B) at VIN = +12 V | 1 | mA | VIN = +12 V | 2 | |||
| Input Current (A, B) at VIN = -7 V | -0.8 | mA | VIN = -7 V | 2 | |||
| CMOS Input Logic Threshold Low (receiver) | VINL | 0.8 | V | 2 | |||
| CMOS Input Logic Threshold High (receiver) | VINH | 2 | V | 2 | |||
| Logic Enable Input Current (RE) | -1 | 1 | μA | 2 | |||
| CMOS Output Voltage Low | VOL | 0.4 | V | IOUT = +4.0 mA | 2 | ||
| CMOS Output Voltage High | VOH | 4 | V | IOUT = -4.0 mA | 2 | ||
| Short-Circuit Output Current (receiver) | 7 | 85 | mA | VOUT = GND or VCC | 2 | ||
| Three-State Output Leakage Current | -1 | 1 | μA | 0.4 V ≤ VOUT ≤ 2.4 V | 2 | ||
| ICC (Outputs Enabled) | ICC | 1 | 2.2 | mA | Digital Inputs = GND or VCC | 2 | |
| ICC (Outputs Disabled) | ICC | 0.6 | 1 | mA | Digital Inputs = GND or VCC | 2 | |
| Propagation Delay Input to Output (driver) | tPLH, tPHL | 2 | 10 | 15 | ns | RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Test Circuit 3 | 2 |
| Driver Output to Output Skew | tSKEW | 1 | 5 | ns | RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Test Circuit 3 | 2 | |
| Driver Rise/Fall Time | tR, tF | 8 | 15 | ns | RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Test Circuit 3 | 2 | |
| Driver Enable to Output Valid | 10 | 25 | ns | RL = 110 Ω, CL = 50 pF, Test Circuit 4 | 2 | ||
| Driver Disable Timing | 10 | 25 | ns | RL = 110 Ω, CL = 50 pF, Test Circuit 4 | 2 | ||
| Matched Enable Switching | /tAZH -tBZL/, /tBZH -tAZL/ | 0 | 2 | ns | RL = 110 Ω, CL = 50 pF, Test Circuit 4* | 2 | |
| Matched Disable Switching | /tAHZ -tBLZ/, /tBHZ -tALZ/ | 0 | 2 | ns | RL = 110 Ω, CL = 50 pF, Test Circuit 4* | 2 | |
| Propagation Delay Input to Output (receiver) | tPLH, tPHL | 8 | 15 | 30 | ns | CL = 15 pF, Test Circuit 5 | 2 |
| Receiver Skew | /tPLH -tPHL/ | 5 | ns | CL = 15 pF, Test Circuit 5 | 2 | ||
| Receiver Enable | tEN1 | 5 | 20 | ns | CL = 15 pF, RL = 1 kΩ, Test Circuit 6 | 2 | |
| Receiver Disable | tEN2 | 5 | 20 | ns | CL = 15 pF, RL = 1 kΩ, Test Circuit 6 | 2 | |
| Tx Pulse Width Distortion | 1 | ns | 2 | ||||
| Rx Pulse Width Distortion | 1 | ns | 2 | ||||
| Supply voltage tolerance | VCC | -5 | 5 | % | Power Supply, 5 V ± 5% | 3 | |
| Supply voltage | VCC | 5 | V | Power Supply, 5 V ± 5% | 3 | ||
| Operating Temperature Range (Industrial, A Version) | -40 | 85 | °C | A Version | 3 | ||
| Supply voltage VCC (absolute maximum) | VCC | -0.3 | 7 | V | 3 | ||
| Driver Input (DI) | DI | -0.3 | V | max VCC + 0.3 V | 3 | ||
| Control Inputs (DE, RE) | DE, RE | -0.3 | V | max VCC + 0.3 V | 3 | ||
| Receiver Inputs (A, B) | A, B | -9 | 14 | V | 3 | ||
| Driver Outputs (A, B) | A, B | -9 | 14 | V | 3 | ||
| Receiver Output | RO | -0.5 | V | max VCC + 0.5 V | 3 | ||
| Power Dissipation 8-Lead SOIC | 450 | mW | 8-Lead SOIC | 3 | |||
| Storage Temperature Range | -65 | 150 | °C | 3 | |||
| Lead Temperature (Soldering, 10 sec) | 300 | °C | 10 sec | 3 | |||
| Lead Temperature (Vapor Phase, 60 sec) | 215 | °C | 60 sec | 3 | |||
| Lead Temperature (Infrared, 15 sec) | 220 | °C | 15 sec | 3 | |||
| Input Voltage Hysteresis | ΔVTH | 70 | mV | VCM = 0 V | 2 | ||
| Thermal Impedance θJA (8-Lead SOIC) | θJA | 170 | °C/W | 8-Lead SOIC | 3 | ||
| Thermal shutdown disable temperature | 150 | °C | Die temperature; drivers disabled | 8 | |||
| Thermal shutdown re-enable temperature | 140 | °C | As device cools; drivers re-enabled | 8 |
CAD (KiCad official)
- Symbol:
ADM1485ARZ-REEL - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
adm1485arz-reel-etched.step/adm1485arz-reel-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);adm1485arz-reel.step/adm1485arz-reel.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (11 pp, sha256
b82bfe64cbc6738f, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).