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ADM485ARMZ-REEL7

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

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ADM485ARMZ-REEL7

Analog Devices · RS-485 / RS-422 ICs · MSOP-8

ADM485ARMZ-REEL7 from Analog Devices, 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: when the receiver is enabled, RO is high if A is greater than B by 200 mV and low if A is less than B by 200 mV.
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 and absolute maximum range is −9 V to +14 V.
7 B bidirectional Inverting receiver input B and driver output B; the bus common-mode range is −7 V to +12 V and absolute maximum range is −9 V to +14 V.
8 VCC power_in Power supply, 5 V ±5%; absolute maximum rating is −0.3 V to +7 V.

Key specifications

Parameter Value
Manufacturer Analog Devices
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 (absolute maximum) VCC -0.3 7 V 5
Driver Input (DI) -0.3 V Upper limit VCC + 0.3 V 5
Control Inputs (DE, RE) -0.3 V Upper limit VCC + 0.3 V 5
Receiver Inputs (A, B) -9 14 V 5
Driver Outputs (A, B) -9 14 V 5
Receiver Output -0.5 V Upper limit VCC + 0.5 V 5
Power Dissipation 8-Lead MSOP 900 mW 5
Storage Temperature Range -65 150 °C 5
Lead Temperature (Soldering) 300 °C 10 sec 5
Lead Temperature (Vapor Phase) 215 °C 60 sec 5
Lead Temperature (Infrared) 220 °C 15 sec 5
Operating Temperature Range (Industrial, A Version) -40 85 °C Industrial range (A version) 5
Differential Output Voltage VOD 5 V R = ∞, see Figure 20 3
Differential Output Voltage VOD 2 5 V VCC = 5 V, R = 50 Ω (RS-422), see Figure 20 3
Differential Output Voltage VOD 1.5 5 V R = 27 Ω (RS-485), see Figure 20 3
Δ/VOD/ for Complementary Output States Δ/VOD/ 0.2 V R = 27 Ω or 50 Ω, see Figure 20 3
Common-Mode Output Voltage VOC 3 V R = 27 Ω or 50 Ω, see Figure 20 3
Output Short-Circuit Current, VOUT = High 35 250 mA −7 V ≤ VO ≤ +12 V 3
Output Short-Circuit Current, VOUT = Low 35 250 mA −7 V ≤ VO ≤ +12 V 3
CMOS Input Logic Threshold Low (driver) VINL 0.8 V 3
CMOS Input Logic Threshold High (driver) VINH 2 V 3
Logic Input Current (DE, DI) -1 1 μA 3
Differential Input Threshold Voltage VTH -0.2 0.2 V −7 V ≤ VCM ≤ +12 V 3
Input Resistance 12 kΩ −7 V ≤ VCM ≤ +12 V 3
Input Current (A, B) 1 mA VIN = 12 V 3
Input Current (A, B) -0.8 mA VIN = −7 V 3
CMOS Input Logic Threshold Low (receiver) VINL 0.8 V 3
CMOS Input Logic Threshold High (receiver) VINH 2 V 3
Logic Enable Input Current (RE) -1 1 μA 3
CMOS Output Voltage Low VOL 0.4 V IOUT = 4.0 mA 3
CMOS Output Voltage High VOH 4 V IOUT = −4.0 mA 3
Short-Circuit Output Current 7 85 mA VOUT = GND or VCC 3
Three-State Output Leakage Current -1 1 μA 0.4 V ≤ VOUT ≤ 2.4 V 3
Power Supply Current, Outputs Enabled ICC 1 2.2 mA Digital inputs = GND or VCC 3
Power Supply Current, Outputs Disabled ICC 0.6 1 mA Digital inputs = GND or VCC 3
Driver Propagation Delay Input to Output tPLH, tPHL 2 10 15 ns RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 22 4
Driver Output to Output Skew tSKEW 1 5 ns RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 22 4
Driver Rise/Fall Time tR, tF 8 15 ns RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 22 4
Driver Enable to Output Valid 10 25 ns RL = 110 Ω, CL = 50 pF, see Figure 23 4
Driver Disable Timing 10 25 ns RL = 110 Ω, CL = 50 pF, see Figure 23 4
Matched Enable Switching /tZH − tZL/ 0 2 ns RL = 110 Ω, CL = 50 pF, see Figure 23 4
Matched Disable Switching /tHZ − tLZ/ 0 2 ns RL = 110 Ω, CL = 50 pF, see Figure 23 4
Receiver Propagation Delay Input to Output tPLH, tPHL 8 15 30 ns CL = 15 pF, see Figure 24 4
Receiver Skew /tPLH − tPHL/ 5 ns CL = 15 pF, see Figure 24 4
Receiver Enable tZH, tZL 5 20 ns CL = 15 pF, RL = 1 kΩ, see Figure 25 4
Receiver Disable tHZ, tLZ 5 20 ns CL = 15 pF, RL = 1 kΩ, see Figure 25 4
Tx Pulse Width Distortion 1 ns 4
Rx Pulse Width Distortion 1 ns 4
Input Voltage Hysteresis ΔVTH 70 mV VCM = 0 V 3
Thermal Impedance, 8-Lead MSOP θJA 206 °C/W 5
Supply Voltage VCC 5 V VCC = 5 V ± 5%, all specifications TMIN to TMAX 3

CAD (KiCad official)

  • Symbol: ADM485ARMZ-REEL7
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: adm485armz-reel7-etched.step / adm485armz-reel7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adm485armz-reel7.step / adm485armz-reel7.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (16 pp, sha256 4475c1e72c517f23, retrieved 2026-10-19, tier: lcsc)
  • 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