Part A
ADM3077EARZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 7400 PCS
- Package
- SOIC-8
- Series
- Interfaces - pilotes, récepteurs, émetteurs - récepteurs
Replacement verdict
Not a drop-in replacement
The ADM3077EARZ and ADM3053BRWZ are not functionally interchangeable despite both being Analog Devices RS-485 transceivers. The ADM3077EARZ is a 3.3 V half-duplex transceiver in an 8-lead SOIC package, while the ADM3053BRWZ is a 5 V isolated full-duplex transceiver with an integrated isolated DC-to-DC converter in a 20-lead SOIC_W package. Differences in isolation, duplex configuration, supply voltage, and package footprint make direct substitution infeasible without redesign.
Different isolation
Different duplex mode
Different supply voltage
Different package footprint
Parts at a glance
Part B
ADM3053BRWZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 4752 PCS
- Package
- SOIC-20
- Series
- Interfaces - pilotes, récepteurs, émetteurs - récepteurs
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 | ADM3053BRWZ | Why it matters |
|---|---|---|---|
| Function / Protocol | RS-485/RS-422 transceiver | Isolated CAN transceiver | These devices serve different bus protocols (RS-485 vs CAN), so they are not functionally interchangeable in a given network. |
| Isolation | Non-isolated | Isolated (2.5 kV rms, signal and power) | Isolation protects against ground loops and high common-mode voltages; the isolated part suits harsh or safety-critical environments. |
| Data Rate | 500 kbps | 1 Mbps | Maximum data rate determines the achievable bus speed and must match the system's timing requirements. |
| Supply Voltage | 3.0 V to 3.6 V (single 3.3 V supply) | 5 V (VCC) and 3.3 V or 5 V (VIO logic supply) | Supply requirements affect power rail design and logic-level compatibility with the host controller. |
| Number of Drivers / Receivers | 1 driver, 1 receiver (half-duplex) | 1 driver, 1 receiver (CAN) | Duplex configuration and channel count determine how the device connects to the bus and whether simultaneous transmit/receive is possible. |
| Package | 8-lead SOIC (R-8) | 20-lead SOIC (RW-20) | Package footprint and pin count affect PCB layout and cannot be directly substituted without redesign. |
| 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 industrial applications. |
| Bus Fault / ESD Protection | ±15 kV ESD (HBM) on bus pins; ±15 V fault tolerance | ±8 kV contact / ±15 kV air ESD (IEC 61000-4-2) on bus pins | Robustness against ESD and bus faults affects reliability in electrically noisy or exposed installations. |
| Integrated DC-DC Converter | No | Yes (isoPower integrated isolated DC-DC) | An integrated isolated power supply simplifies design and reduces external components for isolated CAN nodes. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM3077EARZ | ADM3053BRWZ |
|---|---|---|
| Series | - | IsoPower®, iCoupler® |
| Part Status | Active | Active |
| Type | Transceiver | Transceiver, Isolated |
| Protocol | RS422, RS485 | CAN |
| Number of Drivers/Receivers | 1/1 | 1/1 |
| Data Rate | 16Mbps | 1Mbps |
| Voltage - Supply | 3V ~ 3.6V | 0.5V ~ 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 the ADM3053BRWZ?
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 ADM3053BRWZ is a fully isolated CAN transceiver with an integrated isolated DC-to-DC converter (isoPower) in a 20-lead SOIC_W package, supporting data rates up to 1 Mbps. The ADM3077EARZ is a non-isolated RS-485 transceiver, while the ADM3053BRWZ provides galvanic isolation and is intended for CAN bus applications.
Can the ADM3077EARZ be used as a drop-in replacement for the ADM3053BRWZ?
No. The two devices are not pin-compatible and serve different protocols. The ADM3077EARZ is an 8-lead RS-485 transceiver, whereas the ADM3053BRWZ is a 20-lead isolated CAN transceiver with an integrated DC-to-DC converter. Package, pinout, protocol, and isolation characteristics differ, so a direct substitution is not possible.
What data rates do the ADM3077EARZ and ADM3053BRWZ support?
The ADM3077EARZ supports RS-485/RS-422 data rates up to 500 kbps (slew-rate limited). The ADM3053BRWZ supports CAN data rates up to 1 Mbps.
What isolation rating does the ADM3053BRWZ provide, and does the ADM3077EARZ provide isolation?
The ADM3053BRWZ provides 2.5 kV rms galvanic isolation (per UL 1577) between the CAN bus side and the logic side, using Analog Devices iCoupler and isoPower technology. The ADM3077EARZ is a non-isolated 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 ADM3053BRWZ operates from a single 5 V supply on the logic side (VCC) and provides an isolated 5 V output (VISO) on the bus side via its integrated isoPower DC-to-DC converter.
What ESD protection is specified for the ADM3077EARZ and ADM3053BRWZ?
The ADM3077EARZ specifies ±15 kV ESD protection on the RS-485 bus pins (per IEC 61000-4-2, contact and air discharge). The ADM3053BRWZ datasheet specifies ESD protection on the CAN bus pins; designers should consult the official Analog Devices datasheet for the exact verified ESD ratings applicable to the CANH/CANL pins.
In which applications would each device typically be used?
The ADM3077EARZ is typically used in non-isolated RS-485/RS-422 industrial networks, building automation, and process control buses. The ADM3053BRWZ is used in isolated CAN bus applications such as industrial automation, motor control, and systems requiring galvanic isolation between the CAN bus and local logic.