Part A
ADM3050EBRIZ
ADI公司
- Lifecycle
- Active
- Stock
- 5255 件
- Package
- SOIC-8
- Series
- 介面-驅動器、接收器、收發器
Replacement verdict
Not a drop-in replacement
The ADM3077EARZ and ADM3050EBRIZ are not drop-in replacements for one another. Although both are Analog Devices isolated RS-485 transceivers, they differ in isolation technology, data rate, package and pinout, and supply/protection architecture, so a direct board-level swap is not possible without redesign and revalidation.
Different isolation technology
Different data rate
Different package and pinout
Different supply architecture
Parts at a glance
Part B
ADM3077EARZ
ADI公司
- Lifecycle
- Active
- Stock
- 7400 件
- Package
- SOIC-8
- Series
- 介面-驅動器、接收器、收發器
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 | ADM3050EBRIZ | Why it matters |
|---|---|---|---|
| Function / Protocol | RS-485/RS-422 transceiver | Isolated CAN transceiver (CAN FD capable) | These devices serve entirely different bus protocols (RS-485 vs CAN), so they are not functionally interchangeable in a given network. |
| Isolation | Non-isolated | Galvanically isolated (5 kV rms) | Isolation determines safety, ground-loop immunity, and suitability for harsh or high-voltage environments; the isolated part cannot be replaced by a non-isolated one without redesign. |
| Data Rate | Up to 500 kbps (slew-rate limited) | Up to 12 Mbps (CAN FD) | Maximum data rate must meet the bus timing requirements; a slower transceiver limits throughput and may not support CAN FD frames. |
| Supply Voltage | 5 V single supply | 5 V (VCC) with integrated isolated DC-DC | Supply requirements affect board power design; the isolated part integrates an isolated power supply, changing the power architecture. |
| Number of Transceivers / Channels | 1 driver, 1 receiver (full duplex) | 1 CAN transceiver channel | Channel configuration must match the bus topology; full-duplex RS-485 differs from a single bidirectional CAN channel. |
| Duplex Mode | Full duplex | Half duplex (CAN bus) | Duplex mode determines wiring and whether simultaneous transmit/receive is possible, affecting bus architecture compatibility. |
| Package | 8-lead SOIC (R-8) | 20-lead SOIC_W (RI-20) | Footprint and pin count must match the PCB layout; different packages require board redesign and cannot be drop-in substituted. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +105 °C | The temperature range must cover the application environment; the wider-range part offers margin in hotter environments. |
| Fail-Safe Receiver | Yes (open/short fail-safe) | Not applicable (CAN dominant/recessive) | Fail-safe behavior ensures a defined logic state on an idle or faulted bus, which is protocol-specific and affects bus reliability. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM3050EBRIZ | ADM3077EARZ |
|---|---|---|
| Series | iCoupler® | - |
| Part Status | Active | Active |
| Type | Transceiver, Isolated | Transceiver |
| Protocol | CAN | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 | 1/1 |
| Receiver Hysteresis | 150 mV | 100 mV |
| Data Rate | 12Mbps | 16Mbps |
| Voltage - Supply | 0.5V ~ 6V | 3V ~ 3.6V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Duplex | - | Full |
Frequently asked questions
What are the primary functional differences between the ADM3077EARZ and the ADM3050EBRIZ?
The ADM3077EARZ is a 3.3 V, ±15 kV ESD protected, half-duplex RS-485/RS-422 transceiver specified for data rates up to 500 kbps. The ADM3050EBRIZ is a 5 kV rms isolated, CAN FD transceiver compliant with ISO 11898-2:2016, supporting data rates up to 12 Mbps. They serve different bus protocols (RS-485 vs. CAN) and are not functionally interchangeable.
Are the ADM3077EARZ and ADM3050EBRIZ pin-to-pin compatible?
No. The ADM3077EARZ is offered in an 8-lead SOIC_N package with RS-485 pin functions (RO, RE, DE, DI, GND, A, B, VCC). The ADM3050EBRIZ is offered in a 16-lead SOIC_W package with CAN and isolation-related pins (VCC, GND1, TXD, RXD, VIO, GND2, CANH, CANL, and no-connect pins). Package footprints and pin assignments differ, so they cannot be directly substituted on the same PCB land pattern.
Do both devices provide galvanic isolation?
Only the ADM3050EBRIZ provides galvanic isolation, rated at 5 kV rms per UL 1577 and CSA. The ADM3077EARZ is a non-isolated RS-485/RS-422 transceiver and does not include an isolation barrier.
What are the supported data rates for each device?
The ADM3077EARZ supports RS-485/RS-422 data rates up to 500 kbps. The ADM3050EBRIZ supports CAN FD data rates up to 12 Mbps, consistent with ISO 11898-2:2016.
What supply voltages do the ADM3077EARZ and ADM3050EBRIZ require?
The ADM3077EARZ operates from a single 3.3 V supply (3.0 V to 3.6 V). The ADM3050EBRIZ uses a 5 V supply on the isolated side (VCC) and a 1.7 V to 5.5 V logic supply (VIO) on the system side, with an integrated isolated DC-to-DC converter.
What ESD protection levels are specified for these devices?
The ADM3077EARZ specifies ±15 kV ESD protection on the RS-485 bus pins (A and B) per the human body model (HBM). The ADM3050EBRIZ specifies bus-pin ESD protection per IEC 61000-4-2 and HBM ratings as documented in the Analog Devices datasheet; designers should consult the current datasheet for the exact verified levels before finalizing protection margins.
Can the ADM3077EARZ be used in a CAN network, or the ADM3050EBRIZ in an RS-485 network?
No. The ADM3077EARZ implements RS-485/RS-422 differential signaling and is not CAN protocol compliant. The ADM3050EBRIZ implements CAN FD physical-layer signaling per ISO 11898-2:2016 and is not an RS-485 transceiver. Protocol, framing, and bus termination requirements differ, so each device must be used only within its specified protocol.
Which device is better suited for isolated industrial fieldbus applications?
The ADM3050EBRIZ is the appropriate choice for isolated CAN/CAN FD fieldbus nodes because it integrates a 5 kV rms isolation barrier and an isolated DC-to-DC converter in a single package. The ADM3077EARZ is suited to non-isolated RS-485/RS-422 interfaces where isolation is provided separately or not required.