Part A
ADM211EARSZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4657 PCS
- Package
- SSOP-28
- Series
- Interface - Condutores, Receptores, Transceivers
Replacement verdict
Compatible functional replacement candidate
The ADM211EARSZ and ADM213AR are both RS-232 transceivers from Analog Devices in a 28-pin SOIC package, sharing the same interface protocol and supply voltage class, so the ADM213AR can serve as a functional replacement candidate for the ADM211EARSZ. However, the two devices differ in driver/receiver channel count and in the number of on-chip charge-pump capacitors, so the replacement must be validated against the target board's channel requirements and external capacitor configuration before adoption.
Channel Count
Validation required
Charge-Pump Capacitor Configuration
Validation required
Package Type
High match
Interface Protocol
High match
Parts at a glance
Part B
ADM213AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7562 PCS
- Package
- SOIC-28
- 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 | ADM211EARSZ | ADM213AR | Why it matters |
|---|---|---|---|
| Number of Drivers/Receivers | 4/5 | 4/5 | Defines how many RS-232 line drivers and receivers are available; must match the interface requirement of the target design. |
| Data Rate | 120 kbps | 120 kbps | Maximum signaling speed supported; must meet the baud rate of the communication link. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Determines the power rail required; a mismatch would prevent direct board-level substitution. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Ensures the device operates reliably across the intended environmental conditions of the application. |
| Package / Mounting | 20-SSOP (surface mount) | 28-SOIC (surface mount) | Footprint and pin count must match the PCB layout; different packages are not drop-in compatible. |
| Number of Pins | 20 | 28 | Pin count affects footprint and routing; a different pin count requires a board redesign. |
| Integrated Charge Pump | Yes (on-chip) | Yes (on-chip) | On-chip charge pumps generate the RS-232 voltage levels from a single 5 V supply, eliminating external supplies. |
| ESD Protection (RS-232 I/O) | ±15 kV (IEC 1000-4-2) | ±15 kV (IEC 1000-4-2) | Robust ESD protection safeguards the interface against electrostatic discharge events in real-world use. |
| Shutdown / Enable Feature | Yes | Yes | Low-power shutdown capability allows the interface to be disabled when not in use, reducing system power consumption. |
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 | ADM211EARSZ | ADM213AR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Type | Transceiver | Transceiver |
| Protocol | RS232 | RS232 |
| Number of Drivers/Receivers | 4/5 | 4/5 |
| Duplex | Full | Full |
| Receiver Hysteresis | 650 mV | 650 mV |
| Data Rate | 120Kbps | 120Kbps |
| 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 key differences between the ADM211EARSZ and the ADM213AR?
The ADM211EARSZ is a 5 V, dual-channel RS-232 line driver/receiver in a 28-lead SSOP package, specified over the industrial temperature range of −40°C to +85°C. The ADM213AR is a 5 V, quad-channel RS-232 line driver/receiver in a 28-lead SOIC package, specified over the commercial temperature range of −40°C to +85°C. The primary differences are channel count (2 vs. 4), package type (SSOP vs. SOIC), and the specific driver/receiver configuration.
Are the ADM211EARSZ and ADM213AR pin-compatible?
No. The ADM211EARSZ uses a 28-lead SSOP package, while the ADM213AR uses a 28-lead SOIC (wide body) package. The pinouts and package footprints differ, so they are not drop-in replacements for each other on the same PCB land pattern.
How many drivers and receivers does each device provide?
The ADM211EARSZ provides two RS-232 drivers and two RS-232 receivers. The ADM213AR provides four RS-232 drivers and four RS-232 receivers. The ADM213AR therefore supports more serial channels per device.
Do both devices operate from a single 5 V supply?
Yes. Both the ADM211EARSZ and the ADM213AR are specified for operation from a single +5 V supply and generate the required RS-232 voltage levels internally using on-chip charge pump circuitry.
What data rate do the ADM211EARSZ and ADM213AR support?
Both devices are specified for RS-232 data rates up to 120 kbps, which is sufficient for standard RS-232 communication. Designers should confirm the exact data-rate specification against the respective manufacturer datasheet for the target operating conditions.
What are the operating temperature ranges for these two parts?
The ADM211EARSZ is specified over the industrial temperature range of −40°C to +85°C. The ADM213AR is specified over the commercial temperature range of 0°C to +70°C. This difference matters when selecting a part for industrial or outdoor environments.
Can the ADM211EARSZ be used as a direct substitute for the ADM213AR in an existing design?
No, not as a direct substitute. The ADM211EARSZ has fewer drivers and receivers (2/2 vs. 4/4), a different package (28-lead SSOP vs. 28-lead SOIC), and a different temperature grade. A redesign of the PCB footprint and verification of channel requirements would be necessary before substitution.
Do both parts include ESD protection on the RS-232 bus pins?
Both devices are designed with ESD protection on the RS-232 input/output pins, consistent with the Analog Devices ADM2xxE family. Designers should verify the exact ESD rating (e.g., ±15 kV IEC 1000-4-2 or ±15 kV human body model) in the respective datasheet, as ratings can vary by specific part number and revision.