Part A
ADM3052BRWZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1935 PCS
- Package
- SOIC-16
- Series
- Interface - Condutores, Receptores, Transceivers
Replacement verdict
Not a drop-in replacement
The ADM3077EARZ and ADM3052BRWZ are not drop-in replacements for one another. Although both are Analog Devices isolated RS-485 transceivers, they differ in isolation technology, data rate, supply voltage, and package footprint, so a direct board-level substitution is not possible without design changes.
Different isolation technology
Different data rate
Different supply voltage
Different package footprint
Parts at a glance
Part B
ADM3077EARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7400 PCS
- Package
- SOIC-8
- Series
- Interface - Condutores, Receptores, Transceivers
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADM3077EARZ | ADM3052BRWZ | Why it matters |
|---|---|---|---|
| Protocol / Bus Type | RS-485 / RS-422 | CAN (Controller Area Network) | These devices serve fundamentally different serial bus standards, so they are not functionally interchangeable in a given network. |
| Number of Drivers / Receivers | 1 driver / 1 receiver (half-duplex) | 1 driver / 1 receiver (transceiver) | Both are single-channel transceivers, but the duplex/bus architecture differs, affecting how they connect to the network. |
| Data Rate | Up to 16 Mbps | Up to 1 Mbps | Maximum signaling speed determines the achievable bus length and timing margin for the application. |
| Supply Voltage | 3.0 V to 3.6 V (single 3.3 V supply) | 5 V (VCC) with integrated isolated DC-to-DC | Supply requirements dictate power-rail design and whether external isolation circuitry is needed. |
| Galvanic Isolation | No | Yes (integrated signal and power isolation) | Isolation protects against ground loops and high common-mode voltages; the ADM3052 includes it while the ADM3077 does not. |
| Common-Mode Voltage Range | -7 V to +12 V | -7 V to +12 V (bus pins) | Wide common-mode range ensures reliable communication in electrically noisy industrial environments. |
| Package / Mounting | 8-lead SOIC (surface mount) | 16-lead SOIC_W (surface mount) | Different footprints and pin counts mean the PCB layout cannot be shared between the two parts. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Both cover the industrial temperature range, so thermal suitability is equivalent for typical applications. |
| ESD Protection (Bus Pins) | ±15 kV (HBM) on bus pins | ±8 kV contact / ±15 kV air (IEC 61000-4-2) on bus pins | Robust ESD protection improves field reliability and reduces the need for external transient protection. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM3052BRWZ | ADM3077EARZ |
|---|---|---|
| Series | iCoupler® | - |
| Part Status | Active | Active |
| Type | Transceiver, Isolated | Transceiver |
| Protocol | CAN | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 | 1/1 |
| Data Rate | 1Mbps | 16Mbps |
| Voltage - Supply | 0.5V ~ 6V | 3V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Duplex | - | Full |
| Receiver Hysteresis | - | 100 mV |
Frequently asked questions
What are the primary functional differences between the ADM3077EARZ and ADM3052BRWZ?
The ADM3077EARZ is a 3.3 V, ±15 kV ESD protected, half-duplex RS-485/RS-422 transceiver in an 8-lead SOIC package. The ADM3052BRWZ is an isolated CAN transceiver with an integrated isolated DC-to-DC converter (isoPower) in a 16-lead SOIC_W package, designed for CAN bus applications requiring galvanic isolation.
Are the ADM3077EARZ and ADM3052BRWZ pin-to-pin compatible?
No. The ADM3077EARZ uses an 8-lead SOIC package, while the ADM3052BRWZ uses a 16-lead SOIC_W package. They have different pin counts, pin functions, and PCB land patterns, so they are not directly interchangeable.
Do both devices support the same communication protocol?
No. The ADM3077EARZ supports RS-485/RS-422 differential signaling, whereas the ADM3052BRWZ supports the CAN (Controller Area Network) protocol. They are intended for different bus standards and cannot be used interchangeably in the same network.
Does the ADM3052BRWZ provide galvanic isolation while the ADM3077EARZ does not?
Yes. The ADM3052BRWZ integrates isoPower isolated DC-to-DC conversion and signal isolation for the CAN bus, providing galvanic isolation between the bus side and the logic side. The ADM3077EARZ is a non-isolated RS-485/RS-422 transceiver and does not provide galvanic isolation.
What are the supply voltage requirements for each device?
The ADM3077EARZ operates from a single 3.3 V supply. The ADM3052BRWZ operates with a 5 V supply on the logic side and an isolated 5 V supply on the bus side, generated by its integrated isoPower DC-to-DC converter.
What ESD protection levels are specified for the ADM3077EARZ?
The ADM3077EARZ is specified with ±15 kV ESD protection on the RS-485/RS-422 bus pins, per the Analog Devices datasheet, making it suitable for harsh industrial environments.
Can the ADM3077EARZ be used in a CAN bus application as a substitute for the ADM3052BRWZ?
No. The ADM3077EARZ is an RS-485/RS-422 transceiver and does not implement CAN protocol signaling or isolation. It cannot substitute for the ADM3052BRWZ in a CAN bus application.
What data rates do these devices support?
The ADM3077EARZ supports RS-485/RS-422 data rates up to 500 kbps as specified in the Analog Devices datasheet. The ADM3052BRWZ supports CAN data rates up to 1 Mbps, consistent with the ISO 11898-2 CAN physical layer standard.