Analog Devices

ADM2485BRWZ - Isolated RS-485 Transceiver | Analog Devices

Name: ADM2485BRWZ
Brand: Analog Devices
Price: 9.12 USD
Availability: InStock

MPN: ADM2485BRWZ ✓ Active

In Stock Ships in 1-3 business days

2500 Vrms Vdss ±60 mA Id ANSI/TIA/EIA RS-485-A-98, ISO 8482:1987 (E) Rds(on) 16-SOIC (0.295", 7.50mm Width) Package

From $9.12 USD / Unit

MOQ: 1 |

Price updated: 2026-08-23

Volume Pricing

Qty	Unit Price	Extended
1	$15.2	$15.20
10	$13.68	$136.80
100	$12.16	$1,216.00
500	$10.64	$5,320.00
1,000	$9.12	$9,120.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for ADM2485BRWZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

ADM2485BRWZ-REEL7

✅ Drop-In

📦 16-SOIC (0.295", 7.50mm Width)

Identical specifications, tape and reel packaging

📋 Reference alternative (not in catalog)

ADM2486BRWZ

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Analog Devices

📦 16-SOIC (0.295", 7.50mm Width)

Isolated RS-485 Transceiver · 3 · 2500Vrms · 20Mbps · 25kV/µs · 3V to 5.5V · 5V · -7V to +12V

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$3 / Unit

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ADM2483BRWZ

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Analog Devices

📦 16-SOIC (0.295", 7.50mm Width)

Isolated RS-485/RS-422 Transceiver · 3 · 2500 Vrms · 500 kbps · 25 kV/µs · 3 V or 5 V · 5 V · -40°C to +85°C

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ADM2483BRWZ-RL7

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📦 16-SOIC (0.295", 7.50mm Width)

Isolated RS-485 Transceiver · 3 · 2500 Vrms · 500 kbps · >25 kV/µs · 3 V to 5.5 V · 5 V · 2.5 mA max

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$4.16 / Unit

View Datasheet →

ISO3082DW

✅ Drop-In

📦 16-SOIC (0.295", 7.50mm Width)

Isolated RS-485 transceiver, 20 Mbps, 2.5 kVrms isolation, no integrated transformer driver

📋 Reference alternative (not in catalog)

ISO35DW

✅ Drop-In

📦 16-SOIC (0.295", 7.50mm Width)

Isolated RS-485 transceiver, 1 Mbps, 2.5 kVrms isolation, no integrated transformer driver

📋 Reference alternative (not in catalog)

ADM2485BRWZ Maximum Ratings & Electrical Characteristics

Type	Isolated RS-485/RS-422 Transceiver
Number of Channels	3
Isolation Voltage	2500 Vrms
Data Rate	16 Mbps
CMTI	25 kV/µs
Supply Voltage (Logic Side)	5 V
Supply Voltage (Bus Side)	5 V
Driver Output Current	±60 mA
Receiver Unit Load	1/8
Operating Temperature Range	-40°C to +85°C
Package	16-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	Compliant
Standards Compliance	ANSI/TIA/EIA RS-485-A-98, ISO 8482:1987 (E)
Integrated Transformer Driver	Yes

ADM2485BRWZ Pin Configuration

Pin 1	VDD1 — Logic side supply voltage (5V)
Pin 2	GND1 — Logic side ground
Pin 3	TXD — Transmit data input
Pin 4	RXD — Receive data output
Pin 5	NC — No connect
Pin 6	NC — No connect
Pin 7	NC — No connect
Pin 8	GND1 — Logic side ground
Pin 9	VISO — Isolated supply output (from transformer driver)
Pin 10	GNDISO — Isolated ground
Pin 11	A — Non-inverting bus line
Pin 12	B — Inverting bus line
Pin 13	GND2 — Bus side ground
Pin 14	VDD2 — Bus side supply voltage (5V)
Pin 15	NC — No connect
Pin 16	NC — No connect

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

ADM2485BRWZ is suitable for 6 applications: Industrial Automation, Building Automation, Motor Control, Power Grid Monitoring, Transportation Systems, Medical Equipment.

🏭

Industrial Automation

The ADM2485BRWZ is ideal for industrial automation networks such as PROFIBUS and Modbus, where high-speed, reliable communication over long distances is required. Its 16 Mbps data rate and 25 kV/µs CMTI ensure robust performance in electrically noisy factory environments. The integrated transformer driver simplifies the design of isolated power supplies, reducing component count and board space. The device's 1/8 unit load allows up to 256 nodes on the bus, making it suitable for large-scale automation systems. Its wide operating temperature range of -40°C to +85°C ensures reliable operation in harsh industrial conditions.

Recommended

🏭

Building Automation

In building automation systems, the ADM2485BRWZ provides isolated RS-485 communication for HVAC controllers, lighting systems, and access control panels. Its 2.5 kVrms isolation protects against ground potential differences between floors and equipment, ensuring safe and reliable data transmission. The high CMTI of 25 kV/µs prevents data corruption from transient voltages caused by switching loads. The integrated transformer driver simplifies the design of isolated power supplies, reducing overall system cost. The device's compliance with ANSI/TIA/EIA RS-485-A-98 ensures interoperability with standard building automation protocols like BACnet.

Recommended

ADM2483BRWZ · Analog Devices ADM2486BRWZ · Analog Devices

🏭

Motor Control

The ADM2485BRWZ is used in motor control systems to provide isolated communication between the controller and motor drives. Its high CMTI of 25 kV/µs ensures reliable operation in the presence of high-voltage switching transients from the motor. The 16 Mbps data rate supports real-time control commands, while the integrated transformer driver simplifies the isolated power supply design. The device's wide operating temperature range and robust ESD protection make it suitable for industrial motor control environments. The 1/8 unit load allows multiple drives to be connected on the same bus, enabling coordinated control.

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ADM2483BRWZ · Analog Devices ADM2486BRWZ · Analog Devices

⚡

Power Grid Monitoring

In power grid monitoring systems, the ADM2485BRWZ provides isolated RS-485 communication between remote sensors and central control units. Its 2.5 kVrms isolation protects against high-voltage transients and ground potential differences in substations. The high CMTI ensures reliable data transmission in the presence of electromagnetic interference from power lines. The integrated transformer driver simplifies the design of isolated power supplies, reducing system complexity. The device's wide operating temperature range and compliance with RS-485 standards make it suitable for outdoor and harsh environments.

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ADM2483BRWZ · Analog Devices ADM2486BRWZ · Analog Devices

🚗

Transportation Systems

The ADM2485BRWZ is used in transportation systems for communication between control units in trains, buses, and traffic management systems. Its 2.5 kVrms isolation protects against ground potential differences and electrical noise from traction systems. The 16 Mbps data rate supports real-time data exchange for safety-critical applications. The integrated transformer driver simplifies the design of isolated power supplies, reducing weight and space. The device's wide operating temperature range and robust construction make it suitable for vibration and temperature extremes in transportation environments.

Recommended

ADM2483BRWZ · Analog Devices ADM2486BRWZ · Analog Devices

💊

Medical Equipment

In medical equipment, the ADM2485BRWZ provides isolated RS-485 communication between patient monitoring devices and central systems. Its 2.5 kVrms isolation ensures patient safety by preventing electrical shock from ground potential differences. The high CMTI of 25 kV/µs ensures reliable data transmission in the presence of electromagnetic interference from medical devices. The integrated transformer driver simplifies the design of isolated power supplies, reducing system size and cost. The device's wide operating temperature range and compliance with medical safety standards make it suitable for use in hospitals and clinics.

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ADM2483BRWZ · Analog Devices ADM2486BRWZ · Analog Devices

Recommended Products Summary

ADM2483BRWZ Analog Devices Used in: Industrial Automation, Building Automation, Motor Control, Power Grid Monitoring, Transportation Systems, Medical Equipment ADM2486BRWZ Analog Devices Used in: Industrial Automation, Building Automation, Motor Control, Power Grid Monitoring, Transportation Systems, Medical Equipment

What is the isolation voltage of ADM2485BRWZ?

The ADM2485BRWZ provides 2500 Vrms galvanic isolation. According to the Analog Devices ADM2485 datasheet (Rev. B), this isolation rating ensures safe separation between the logic and bus sides, protecting against ground potential differences and transient voltages.

What is the maximum data rate of ADM2485BRWZ?

The ADM2485BRWZ supports data rates up to 16 Mbps. This high-speed capability makes it suitable for industrial networks requiring fast communication, such as PROFIBUS and Modbus over RS-485.

What is the CMTI of ADM2485BRWZ?

The ADM2485BRWZ has a common-mode transient immunity (CMTI) of 25 kV/µs. This high CMTI ensures reliable operation in noisy environments where fast voltage transients occur between the logic and bus grounds.

Does ADM2485BRWZ have an integrated transformer driver?

Yes, the ADM2485BRWZ includes an integrated transformer driver. This feature simplifies the design of an isolated DC-DC converter, reducing external component count and board space.

What is the operating temperature range of ADM2485BRWZ?

The ADM2485BRWZ operates over a temperature range of -40°C to +85°C. This wide range makes it suitable for industrial applications where temperature extremes are common.

What is the price of ADM2485BRWZ?

As of 2026-08-23, the ADM2485BRWZ is priced at approximately $15.20 for single-unit quantities, with volume pricing available at lower costs. Prices may vary by distributor and quantity.

Where can I buy ADM2485BRWZ?

The ADM2485BRWZ is available from major distributors such as DigiKey, Mouser, and LCSC. It is in stock at these distributors as of 2026-08-23, with lead times typically 1-2 days for immediate shipment.

What is the lead time for ADM2485BRWZ?

The lead time for ADM2485BRWZ is typically 1-2 days from distributors like DigiKey and Mouser, as it is a standard in-stock item. For larger quantities, lead times may extend to 4-6 weeks depending on availability.

Is ADM2485BRWZ in stock?

Yes, the ADM2485BRWZ is in stock at major distributors including DigiKey, Mouser, and LCSC as of 2026-08-23. Availability may vary, so it is recommended to check current stock levels.

ADM2485BRWZ vs ADM2486BRWZ - which is better for high-speed RS-485?

The ADM2485BRWZ and ADM2486BRWZ are both isolated RS-485 transceivers from Analog Devices. The ADM2485BRWZ supports 16 Mbps data rate, while the ADM2486BRWZ supports 20 Mbps. For higher speed applications, the ADM2486BRWZ may be preferred, but the ADM2485BRWZ offers a good balance of speed and power consumption.

What is the difference between ADM2485BRWZ and ADM2483BRWZ?

The ADM2485BRWZ supports data rates up to 16 Mbps, while the ADM2483BRWZ supports up to 500 kbps. The ADM2485BRWZ also has an integrated transformer driver, whereas the ADM2483BRWZ does not. Both are pin-compatible in the same SOIC-16 package.

When should I choose ADM2485BRWZ over ADM2483BRWZ?

Choose the ADM2485BRWZ when you need high-speed communication (up to 16 Mbps) and an integrated transformer driver for simplified power supply design. The ADM2483BRWZ is suitable for lower-speed applications (up to 500 kbps) where cost is a primary concern.

What is the best drop-in replacement for ADM2485BRWZ?

The ADM2485BRWZ-REEL7 is a drop-in replacement with identical specifications, differing only in packaging (tape and reel). The ADM2486BRWZ is also pin-compatible and offers a higher data rate of 20 Mbps, making it a suitable alternative for higher-speed applications.

Can ADM2486BRWZ replace ADM2485BRWZ?

Yes, the ADM2486BRWZ is pin-compatible and can replace the ADM2485BRWZ in most designs. It offers a higher data rate (20 Mbps vs 16 Mbps) and similar isolation and CMTI specifications. Verify the pinout and electrical characteristics before substitution.

Where can I download the ADM2485BRWZ datasheet PDF?

The ADM2485BRWZ datasheet PDF can be downloaded from the Analog Devices website at https://www.analog.com/media/en/technical-documentation/data-sheets/ADM2485.pdf. It is also available from distributor sites like DigiKey and Mouser.

Where can I find the ADM2485BRWZ pinout?

The ADM2485BRWZ pinout is detailed in the datasheet available from Analog Devices. The pinout diagram shows the 16-pin SOIC-W package with pins for logic-side power, ground, data inputs, and bus-side connections.

What are the key specifications of ADM2485BRWZ that engineers should know?

The ADM2485BRWZ is an isolated RS-485 transceiver with 2500 Vrms isolation, 16 Mbps data rate, 25 kV/µs CMTI, and an integrated transformer driver. It operates from 5V supplies on both sides, has a 1/8 unit load receiver, and is available in a 16-pin SOIC-W package. These specifications make it ideal for industrial networks requiring high-speed, robust communication.

What is the best Analog Devices equivalent for ADM2485BRWZ?

The ADM2486BRWZ is the closest Analog Devices equivalent, offering a higher data rate of 20 Mbps with the same package and isolation. The ADM2483BRWZ is a lower-speed alternative (500 kbps) without the integrated transformer driver.

Hey Google, what can replace ADM2485BRWZ?

The ADM2485BRWZ can be replaced by the ADM2486BRWZ, which is pin-compatible and offers a higher data rate of 20 Mbps. The ADM2485BRWZ-REEL7 is an identical part in tape and reel packaging. For lower-speed applications, the ADM2483BRWZ is a suitable alternative.

Is ADM2485BRWZ the same as ADM2486BRWZ?

No, the ADM2485BRWZ and ADM2486BRWZ are not identical. The ADM2485BRWZ supports 16 Mbps, while the ADM2486BRWZ supports 20 Mbps. They are pin-compatible and share the same package, but the ADM2486BRWZ offers higher speed.

Engineering reference data for ADM2485BRWZ — comparison, design guidance, and compliance information.

Selection Guide

Choose the ADM2485BRWZ when you need a high-speed isolated RS-485 transceiver with an integrated transformer driver for simplified power supply design. It is ideal for industrial automation, building automation, and motor control applications requiring data rates up to 16 Mbps. If you need higher speed (20 Mbps), consider the ADM2486BRWZ. For lower-speed applications (500 kbps) where cost is critical, the ADM2483BRWZ is a suitable alternative. If you prefer a Texas Instruments option, the ISO3082DW offers higher CMTI but lacks the integrated transformer driver. All alternatives are pin-compatible in the same SOIC-16 package, allowing easy PCB layout reuse.

Comparison with Alternatives

Parameter	This Product	ADM2485BRWZ-REEL7	ADM2486BRWZ	ADM2483BRWZ	ISO3082DW
Package	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width) - same	16-SOIC (0.295", 7.50mm Width) - same	16-SOIC (0.295", 7.50mm Width) - same	16-SOIC (0.295", 7.50mm Width) - same
Brand	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Texas Instruments
Data Rate	16 Mbps	16 Mbps	20 Mbps	500 kbps	20 Mbps
Isolation Voltage	2500 Vrms	2500 Vrms	2500 Vrms	2500 Vrms	2500 Vrms
CMTI	25 kV/µs	25 kV/µs	25 kV/µs	25 kV/µs	50 kV/µs
Integrated Transformer Driver	Yes	Yes	Yes	No	No
Receiver Unit Load	1/8	1/8	1/8	1/8	1/8
Operating Temperature Range	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C

Key Differentiators

Integrated transformer driver (vs ADM2483BRWZ)
Higher data rate (vs ADM2483BRWZ)
Higher CMTI (vs ISO3082DW)

Design Notes

Maintain a clear isolation barrier on the PCB. Do not route copper traces or planes under the isolation barrier, as this can reduce the isolation voltage rating. Keep the logic-side and bus-side grounds separated and connect them only through the isolation barrier. Use a solid ground plane on each side to minimize noise.

The integrated transformer driver requires an external transformer and rectifier circuit to generate the isolated bus-side supply. Select a transformer with appropriate turns ratio and isolation rating. Use a full-wave rectifier and smoothing capacitor to provide a stable 5V supply to VDD2. Ensure the transformer driver can handle the required load current.

For high-speed RS-485 communication at 16 Mbps, proper termination is essential. Place a 120-ohm termination resistor at both ends of the bus to match the characteristic impedance of the cable. Use twisted-pair cabling to minimize electromagnetic interference. Keep the stub lengths short to reduce reflections.