Part A
ADM3202ARN
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3772 PCS
- Package
- SOIC-16
- Series
- Interface - Condutores, Receptores, Transceivers
Replacement verdict
Compatible functional replacement candidate
The ADM3202ARN and ADM3222ARW are both dual-channel RS-232 transceivers from Analog Devices with matching driver/receiver counts, supply voltage ranges, and data rates, making them functionally interchangeable in most designs. The primary distinction is package and pinout: the ADM3202ARN uses a 16-lead narrow SOIC while the ADM3222ARW uses a 16-lead wide SOIC, so footprint and PCB layout must be validated before substitution. Electrical performance is closely aligned, though the ADM3222ARW offers enhanced ESD protection and slightly different external capacitor requirements that warrant confirmation against the target application.
Driver/Receiver Channel Count
High match
Supply Voltage Range
High match
Package Type and Pinout
Validation required
ESD Protection and External Capacitor Requirements
Validation required
Parts at a glance
Part B
ADM3222ARW
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6924 PCS
- Package
- SOIC-18
- 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 | ADM3202ARN | ADM3222ARW | Why it matters |
|---|---|---|---|
| Number of Drivers/Receivers | 2/2 | 2/2 | Both are dual transceivers, so the channel count is functionally equivalent for RS-232 interfacing. |
| Package / Mounting Type | 16-SOIC (Narrow), Surface Mount | 16-SOIC (Wide), Surface Mount | Different package widths affect PCB footprint and layout; the wide-body version is not a drop-in replacement for the narrow-body footprint. |
| Operating Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | Identical supply range means both can operate from the same 3.3 V or 5 V rail in a given design. |
| Data Rate | 460 kbps | 460 kbps | Matching maximum data rate ensures equivalent throughput capability for serial communication links. |
| Number of Charge Pump Capacitors | 4 external capacitors | 4 external capacitors | Same external capacitor count means the same charge-pump support circuitry is required for both parts. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings confirm both are suitable for the same industrial temperature environments. |
| Receiver Input Voltage Range | ±30 V | ±30 V | Same receiver input tolerance provides equivalent protection against RS-232 line-level overvoltages. |
| Shutdown / Enable Feature | Not available | Not available | Neither device offers a shutdown mode, so power-management behavior is equivalent between the two. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM3202ARN | ADM3222ARW |
|---|---|---|
| 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 | 400 mV | 400 mV |
| Data Rate | 460Kbps | 460Kbps |
| Voltage - Supply | 3V ~ 5.5V | 3V ~ 5.5V |
| 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 ADM3202ARN and ADM3222ARW?
The ADM3202ARN is a dual-channel RS-232 transceiver in a 16-lead narrow SOIC package, while the ADM3222ARW is a dual-channel RS-232 transceiver in a 16-lead wide-body SOIC package. Both are 3.3 V powered devices with two drivers and two receivers, but the ADM3222ARW includes an internal charge pump that generates the RS-232 voltage levels from a single 3.3 V supply, whereas the ADM3202ARN requires an external charge pump or dual supply. Package width and thermal characteristics differ accordingly.
Are the ADM3202ARN and ADM3222ARW pin-compatible?
No. Although both are 16-lead devices, the ADM3202ARN uses a narrow-body SOIC (approximately 3.9 mm body width) and the ADM3222ARW uses a wide-body SOIC (approximately 7.5 mm body width). The pin functions are similar but the PCB land patterns and footprint dimensions are not interchangeable without layout changes.
What supply voltage do the ADM3202ARN and ADM3222ARW require?
Both devices operate from a single 3.3 V supply (typically 3.0 V to 3.6 V). The ADM3222ARW integrates an on-chip charge pump to generate the positive and negative RS-232 output levels, while the ADM3202ARN requires external charge pump circuitry or a dual supply to achieve compliant RS-232 levels.
How many drivers and receivers do these devices provide?
Both the ADM3202ARN and ADM3222ARW are dual-channel transceivers, each providing two RS-232 drivers and two RS-232 receivers. They are intended for full-duplex or dual-channel serial communication in 3.3 V systems.
What data rate do the ADM3202ARN and ADM3222ARW support?
Both devices are specified for data rates up to 200 kbps, which is typical for standard RS-232 transceivers using internal or external charge pumps at 3.3 V. Higher rates require verification against the specific manufacturer datasheet revision.
Can the ADM3222ARW replace the ADM3202ARN in an existing design?
Not as a drop-in replacement. The ADM3222ARW has a wider SOIC body and includes an internal charge pump, so the PCB footprint, external component count, and layout must be revised. Electrical compatibility of the RS-232 interface should be validated against the target design requirements and the manufacturer datasheet before substitution.
What are the operating temperature ranges for these devices?
Both the ADM3202ARN and ADM3222ARW are typically specified for the industrial temperature range of −40 °C to +85 °C. Confirm the exact grade and suffix against the manufacturer datasheet, as commercial and extended variants may exist.
Do these devices include ESD protection on the RS-232 pins?
Yes. Both the ADM3202ARN and ADM3222ARW include ESD protection on the RS-232 driver outputs and receiver inputs, typically rated to ±15 kV using the Human Body Model (HBM) for the RS-232 pins. Verify the exact ESD rating in the manufacturer datasheet for the specific orderable part number.