Part A
ADM483EARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6730 PCS
- Package
- SOIC-8
- Series
- Interface - Condutores, Receptores, Transceivers
Replacement verdict
Compatible functional replacement candidate
The ADM4853ARZ and ADM483EARZ are both half-duplex RS-485/RS-422 transceivers in an 8-lead SOIC package with a 5 V supply and a pinout that maps driver and receiver enable functions to the same pins, making them functionally interchangeable for most bus-interface designs. The ADM4853ARZ offers a higher maximum data rate and a wider receiver common-mode range, while the ADM483EARZ provides lower quiescent supply current and a reduced driver output swing suited to lower-EMI applications. Designers should confirm data-rate headroom, receiver common-mode requirements, and supply-current budget against the target application before substituting one for the other.
Package Type
High match
Pin Configuration
High match
Data Rate
Validation required
Supply Current
Validation required
Parts at a glance
Part B
ADM4853ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6517 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 | ADM4853ARZ | ADM483EARZ | Why it matters |
|---|---|---|---|
| Data Rate | 10 Mbps | 250 kbps | Maximum signaling speed; the two parts are not interchangeable in high-speed buses since ADM4853ARZ supports much faster data rates. |
| Duplex Mode | Full duplex | Half duplex | Determines whether simultaneous transmit and receive is possible; full-duplex and half-duplex parts cannot be directly substituted in the same bus topology. |
| Number of Drivers / Receivers | 1 driver / 1 receiver | 1 driver / 1 receiver | Defines the transceiver channel count; both are single-channel devices, so channel count alone does not differentiate them. |
| Receiver Input Impedance (Unit Loads) | 1 unit load (12 kΩ) | 1 unit load (12 kΩ) | Determines how many nodes can share the bus; both are standard 1-unit-load devices supporting up to 32 nodes. |
| Supply Voltage | 5 V | 5 V | Operating supply rail; both require a 5 V supply, so power supply compatibility is maintained. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Industrial temperature range; identical ratings mean both suit the same environmental conditions. |
| Package / Mounting | 8-SOIC (surface mount) | 8-SOIC (surface mount) | Footprint and assembly compatibility; identical SOIC packages allow drop-in PCB replacement. |
| ESD Protection (Bus Pins) | ±15 kV HBM | ±15 kV HBM | Robustness against electrostatic discharge on the bus; equal ratings indicate comparable field reliability. |
| Fail-Safe Receiver | Yes (open/short circuit) | Yes (open/short circuit) | Ensures a defined logic output when the bus is idle or faulted; both provide fail-safe behavior for reliable communication. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM483EARZ | ADM4853ARZ |
|---|---|---|
| Part Status | Active | Active |
| Type | Transceiver | Transceiver |
| Protocol | RS422, RS485 | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 | 1/1 |
| Duplex | Half | Half |
| Receiver Hysteresis | 70 mV | 20 mV |
| Data Rate | 250kbps | 10Mbps |
| Voltage - Supply | 4.5V ~ 5.5V | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADM4853ARZ and ADM483EARZ?
The ADM4853ARZ is a half-duplex RS-485/RS-422 transceiver specified for data rates up to 500 kbps, while the ADM483EARZ is a half-duplex RS-485/RS-422 transceiver specified for data rates up to 250 kbps. Both are 5 V single-supply devices in 8-lead SOIC packages, but they differ in data rate, slew-rate limiting, and specified ESD/transient protection levels per their respective Analog Devices datasheets.
Are the ADM4853ARZ and ADM483EARZ pin-compatible?
Yes. Both devices are offered in the same 8-lead SOIC (R-8) package with the same pinout (RO, RE, DE, DI, GND, A, B, VCC), so they are pin-compatible at the package level. Electrical and data-rate differences must still be validated for the target design.
Can the ADM4853ARZ directly replace the ADM483EARZ in an existing design?
Pin compatibility allows a physical swap, but the ADM4853ARZ supports a higher maximum data rate (500 kbps vs 250 kbps) and has different slew-rate and protection specifications. The replacement should only be made after confirming that bus timing, cable length, termination, and transient protection requirements are satisfied per the Analog Devices datasheets for both parts.
What supply voltage do the ADM4853ARZ and ADM483EARZ require?
Both devices operate from a single 5 V supply (VCC = 5 V ±5%) as specified in their Analog Devices datasheets. They are not 3.3 V parts, so they should not be used in 3.3 V-only systems without level shifting.
What is the maximum data rate of each device?
The ADM4853ARZ is specified for data rates up to 500 kbps, and the ADM483EARZ is specified for data rates up to 250 kbps, per the Analog Devices datasheets. The lower rate of the ADM483EARZ is associated with its slew-rate-limited output, which reduces EMI and reflections on longer cables.
Do these transceivers support half-duplex or full-duplex operation?
Both the ADM4853ARZ and ADM483EARZ are half-duplex RS-485/RS-422 transceivers, providing one driver and one receiver with shared A/B bus pins. Neither part provides the separate driver/receiver bus pairs required for full-duplex operation.
How many nodes can be connected on a bus using these transceivers?
Both the ADM4853ARZ and ADM483EARZ are specified as RS-485 transceivers supporting up to 32 nodes on a bus, consistent with the standard 1-unit-load RS-485 receiver input impedance defined in their Analog Devices datasheets. Bus loading, termination, and stub length must be designed accordingly.
What receiver input and output logic levels do these devices provide?
Both devices provide a differential receiver with a specified input sensitivity that guarantees a defined output state for small differential bus voltages, and their receiver outputs are TTL/CMOS-compatible logic levels referenced to VCC = 5 V. Exact threshold and output-level limits should be taken from the respective Analog Devices datasheet tables.
What ESD and transient protection is specified for the ADM4853ARZ and ADM483EARZ?
Both parts include ESD protection on the RS-485 bus pins, with the ADM483EARZ datasheet specifying enhanced ESD protection levels on the A/B pins. Because the specified ESD and transient ratings differ between the two datasheets, the exact human-body-model and IEC transient levels should be verified from the Analog Devices documentation for each part before substitution.