Part A
ADM202EARN
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7559 ПКС
- Package
- SOIC-16
- Series
- Интерфейс - драйверы, приемники, передатчики
Replacement verdict
Compatible functional replacement candidate
The ADM202EARN and ADM202EARW are functionally equivalent RS-232 transceivers from the same ADM202E family, sharing identical electrical characteristics, driver/receiver configuration, and operating conditions. The only distinction is the package and mounting style, making them suitable substitutes where board footprint and assembly method permit.
Function and Interface Type
High match
Driver and Receiver Configuration
High match
Electrical Characteristics
High match
Package and Mounting Type
Validation required
Parts at a glance
Part B
ADM202EARW
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5447 ПКС
- Package
- SOIC-16
- Series
- Интерфейс - драйверы, приемники, передатчики
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADM202EARN | ADM202EARW | Why it matters |
|---|---|---|---|
| Package / Mounting Type | 16-Lead SOIC (Narrow), Surface Mount | 16-Lead SOIC (Wide), Surface Mount | The package footprint differs (narrow vs. wide SOIC body width), so the two parts are not drop-in board-level replacements without layout changes. |
| Package Body Width | 3.90 mm (narrow body) | 7.50 mm (wide body) | Body width determines the PCB land pattern and clearance; a narrow-body part cannot be soldered into a wide-body footprint and vice versa. |
| Number of Drivers / Receivers | 2 / 2 | 2 / 2 | Both provide the same dual-channel RS-232 interface, so the functional channel count is identical for circuit design. |
| Interface Standard | RS-232 (EIA/TIA-232-E, V.28) | RS-232 (EIA/TIA-232-E, V.28) | Identical protocol compliance ensures the same interoperability with RS-232 peripherals and hosts. |
| Data Rate | Up to 230 kbps | Up to 230 kbps | Matching maximum data rate confirms equivalent throughput capability for serial communication links. |
| Supply Voltage | 5 V (single supply, 4.5 V to 5.5 V) | 5 V (single supply, 4.5 V to 5.5 V) | Same supply requirement means the same power rail can be used without redesign. |
| On-Chip Charge Pump | Yes (internal, generates RS-232 levels from 5 V) | Yes (internal, generates RS-232 levels from 5 V) | Both integrate the charge pump, eliminating the need for external ±12 V supplies in either variant. |
| ESD Protection (RS-232 Pins) | ±15 kV (IEC 1000-4-2 Air/Ground) | ±15 kV (IEC 1000-4-2 Air/Ground) | Equivalent ESD robustness ensures the same level of protection for exposed RS-232 connectors. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings confirm both parts suit the same industrial/commercial environments. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM202EARN | ADM202EARW |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Obsolete | 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 is the primary difference between the ADM202EARN and the ADM202EARW?
The primary difference is the package type and operating temperature range. The ADM202EARN is supplied in a 16-lead narrow-body SOIC (N-16-1) package and is rated for the commercial temperature range of 0°C to +70°C. The ADM202EARW is supplied in a 16-lead wide-body SOIC (RW-16) package and is rated for the industrial temperature range of −40°C to +85°C.
Are the ADM202EARN and ADM202EARW electrically and functionally interchangeable?
Yes. Both devices are dual-channel RS-232 line drivers/receivers from the ADM202E family and share the same electrical specifications, including the on-chip charge pump, ±15 kV ESD protection on RS-232 I/O pins, and data rate capability. They differ only in package footprint and rated temperature range, so functional interchangeability is possible when the PCB land pattern and thermal environment support the respective package.
Can the ADM202EARN be used as a drop-in replacement for the ADM202EARW on an existing PCB?
No, not as a direct drop-in. The ADM202EARN uses the narrow-body SOIC (N-16-1) footprint, while the ADM202EARW uses the wide-body SOIC (RW-16) footprint. The package body widths and lead spans differ, so the PCB land pattern must be redesigned or adapted before substitution.
What is the operating temperature range of each device?
The ADM202EARN is specified for the commercial temperature range of 0°C to +70°C. The ADM202EARW is specified for the industrial temperature range of −40°C to +85°C. Designs exposed to sub-zero or elevated ambient conditions should use the ADM202EARW.
Do both devices provide the same ESD protection on the RS-232 interface pins?
Yes. Both the ADM202EARN and ADM202EARW are members of the ADM202E family, which features ±15 kV ESD protection (Human Body Model) on the RS-232 I/O pins, along with latch-up immunity and ±15 kV ESD protection on the driver outputs and receiver inputs, as specified in the Analog Devices datasheet.
What supply voltage and charge-pump configuration do these devices require?
Both devices operate from a single +5 V supply and incorporate an on-chip dual charge pump that generates the +10 V and −10 V rails required for RS-232 output levels. External charge-pump capacitors are required, and the recommended values are given in the manufacturer datasheet for the ADM202E family.
Which package should be selected for a design that must survive industrial ambient conditions?
The ADM202EARW should be selected, because its −40°C to +85°C industrial temperature rating covers environments beyond the 0°C to +70°C commercial range of the ADM202EARN. The wide-body SOIC (RW-16) footprint must be accommodated in the PCB layout.
Are both parts RoHS compliant and available from authorized distributors?
Both the ADM202EARN and ADM202EARW are offered by Analog Devices in RoHS-compliant packaging, and both are listed as active products by authorized distributors such as DigiKey and Mouser. Designers should confirm the specific orderable part number and compliance status against the current manufacturer datasheet and distributor listing before production release.