Part A
ADM202EARNZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6062 PCS
- Package
- SOIC-16
- Series
- Interface - Condutores, Receptores, Transceivers
Replacement verdict
Compatible functional replacement candidate
The ADM202EARNZ and ADM202EARW are functionally equivalent RS-232 transceivers from the same ADM202E family, sharing identical driver/receiver counts, supply voltage range, and data rate. The primary distinction is the package and temperature grade, so the ADM202EARW can serve as a functional substitute for the ADM202EARNZ where the wider temperature range and SOIC-16W footprint are acceptable.
Driver/Receiver Count
High match
Supply Voltage Range
High match
Data Rate
High match
Package Type
Validation required
Parts at a glance
Part B
ADM202EARW
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5447 PCS
- Package
- SOIC-16
- 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 | ADM202EARNZ | ADM202EARW | Why it matters |
|---|---|---|---|
| Package / Case | 16-SOIC (Narrow, 3.90mm) | 16-SOIC (Wide, 7.50mm) | Footprint and board layout differ; the wide-body version requires a larger pad area and cannot drop into a narrow-body footprint without layout changes. |
| Mounting Type | Surface Mount | Surface Mount | Both are SMD, but the differing body width affects pick-and-place and reflow profile compatibility. |
| Number of Drivers/Receivers | 2/2 | 2/2 | Confirms both are dual RS-232 transceivers, ensuring equivalent channel count for the interface. |
| Data Rate | 120 kbps | 120 kbps | Identical maximum data rate means both support the same RS-232 communication speeds. |
| Supply Voltage | 5 V (4.5 V to 5.5 V) | 5 V (4.5 V to 5.5 V) | Same single 5 V supply range ensures electrical compatibility with the host system. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Identical industrial temperature range supports the same environmental conditions. |
| Number of Pins | 16 | 16 | Same pin count with identical pinout allows functional substitution when the footprint is adapted. |
| ESD Protection (RS-232 Pins) | ±15 kV (IEC 1000-4-2) | ±15 kV (IEC 1000-4-2) | Equivalent ESD robustness on the interface pins ensures the same level of protection in the field. |
| RoHS Status | RoHS Compliant | RoHS Compliant | Both meet RoHS, satisfying the same regulatory and environmental compliance requirements. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM202EARNZ | ADM202EARW |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Type | Transceiver | Transceiver |
| Protocol | RS232 | RS232 |
| Number of Drivers/Receivers | 2/2 | 2/2 |
| Duplex | Full | Full |
| Receiver Hysteresis | 650 mV | 650 mV |
| Data Rate | 230kbps | 230kbps |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the main differences between the ADM202EARNZ and the ADM202EARW?
The primary difference is the package type: the ADM202EARNZ is supplied in an 16-lead narrow-body SOIC (R-16) package, while the ADM202EARW is supplied in a 16-lead wide-body SOIC (RW-16) package. Both are dual-channel RS-232 transceivers from Analog Devices with the same electrical function, but the wider body of the ADM202EARW provides increased creepage and clearance distances between pins and PCB traces.
Are the ADM202EARNZ and ADM202EARW electrically and functionally interchangeable?
Yes. Both devices are members of the ADM202E family and share the same electrical specifications: dual RS-232 drivers and receivers, 5 V single-supply operation, on-chip charge pump, and data rates up to 120 kbps. The functional behavior and pinout are identical; only the package footprint and isolation spacing differ.
Can the ADM202EARNZ be used as a drop-in replacement for the ADM202EARW on an existing PCB?
No, not as a direct drop-in. The narrow-body SOIC (R-16) and wide-body SOIC (RW-16) have different package widths and land patterns, so the PCB footprint must be redesigned. Electrical compatibility alone does not guarantee mechanical compatibility.
Which package should be selected for applications requiring higher isolation or creepage?
The ADM202EARW, with its wide-body SOIC (RW-16) package, offers greater pin-to-pin spacing and is preferable where increased creepage and clearance are needed, such as in systems exposed to higher voltage transients or requiring enhanced isolation margins. The ADM202EARNZ narrow-body package is more compact for space-constrained designs.
Do both devices support the same RS-232 data rate and supply voltage?
Yes. Both the ADM202EARNZ and ADM202EARW operate from a single 5 V supply and support RS-232 data rates up to 120 kbps, with the same driver output swing and receiver input thresholds as specified in the Analog Devices ADM202E datasheet.
Are the ADM202EARNZ and ADM202EARW RoHS compliant?
Yes. Both the Z suffix (ADM202EARNZ) and the W suffix (ADM202EARW) denote RoHS-compliant, lead-free (Pb-free) packaging per Analog Devices ordering information. Designers should confirm the specific orderable part number against the manufacturer datasheet for the latest compliance status.
What are the operating temperature ranges for these two parts?
Both the ADM202EARNZ and ADM202EARW are specified for the industrial temperature range of −40 °C to +85 °C, as listed in the Analog Devices ADM202E datasheet.