Part A
ADM202EANZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4697 PCS
- Package
- DIP-16
- Series
- Interface - Condutores, Receptores, Transceivers
Replacement verdict
Compatible functional replacement candidate
The ADM202EANZ and ADM206ANZ are both RS-232 transceivers from Analog Devices in the same 16-lead SOIC package, sharing identical supply voltage ranges and driver/receiver channel counts, making them strong functional replacement candidates. The primary distinction lies in the on-chip charge pump configuration and the resulting external capacitor requirements, so designers should validate the charge pump architecture and external component count against the target application before substituting one for the other.
Channel Count
High match
Package Type
High match
Supply Voltage Range
High match
Charge Pump Configuration
Validation required
Parts at a glance
Part B
ADM206ANZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5893 PCS
- Package
- DIP-24
- 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 | ADM202EANZ | ADM206ANZ | Why it matters |
|---|---|---|---|
| Number of Drivers | 2 | 4 | The driver count determines how many RS-232 transmit lines the device can support; ADM206 offers twice the transmit channels of ADM202E. |
| Number of Receivers | 2 | 4 | Receiver count defines how many RS-232 receive lines are available; ADM206 provides four receivers versus two on ADM202E. |
| Data Rate | 120 kbps | 120 kbps | Maximum signaling rate affects throughput; both parts support the same 120 kbps data rate, so speed is not a differentiator. |
| Supply Voltage | 5 V | 5 V | Operating supply voltage must match the system rail; both devices operate from a single 5 V supply. |
| Package / Mounting | 16-Lead SOIC (surface mount) | 24-Lead SOIC (surface mount) | Package footprint and pin count affect PCB layout and drop-in compatibility; the two parts use different SOIC sizes. |
| External Charge Pump Capacitors | 4 external capacitors | 4 external capacitors | Charge pump capacitors are required for RS-232 voltage generation; both parts need the same number of external capacitors. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range determines suitability for industrial environments; both parts share the same extended industrial range. |
| ESD Protection (RS-232 I/O) | ±15 kV (IEC 1000-4-2) | ±15 kV (IEC 1000-4-2) | ESD robustness protects the interface in harsh environments; both devices offer equivalent ±15 kV ESD protection on RS-232 pins. |
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 | ADM202EANZ | ADM206ANZ |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Analog Devices Inc. |
| Part Status | Active | Active |
| Type | Transceiver | Transceiver |
| Protocol | RS232 | RS232 |
| Number of Drivers/Receivers | 2/2 | 4/3 |
| Duplex | Full | Full |
| Receiver Hysteresis | 650 mV | 650 mV |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Through Hole | Through Hole |
| Data Rate | 230kbps | - |
Frequently asked questions
What are the key differences between the ADM202EANZ and ADM206ANZ?
The ADM202EANZ is a dual RS-232 line driver/receiver with an internal charge pump that generates RS-232 voltage levels from a single 5 V supply, housed in a 16-lead PDIP. The ADM206ANZ is a similar RS-232 transceiver but includes an internal shutdown feature and is specified for operation with a single 5 V supply; it is also offered in a 24-lead PDIP/SOIC package with additional control pins. The primary differences are package/pin count, shutdown capability, and the number of control/handshake signals supported.
Are the ADM202EANZ and ADM206ANZ pin-compatible?
No. The ADM202EANZ is a 16-lead device, while the ADM206ANZ is a 24-lead device. Their pin counts and pin functions differ, so they are not drop-in replacements for each other. PCB layout and pin assignments must be reviewed against the respective datasheets before substitution.
Do both devices operate from a single 5 V supply?
Yes. Both the ADM202EANZ and ADM206ANZ are specified to operate from a single +5 V supply and use internal charge pump circuitry to generate the required RS-232 voltage levels, eliminating the need for external ±12 V supplies.
What data rate do the ADM202EANZ and ADM206ANZ 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 in the manufacturer datasheet for the specific grade and operating conditions.
Does the ADM206ANZ offer shutdown capability that the ADM202EANZ lacks?
Yes. The ADM206ANZ includes an internal shutdown feature that reduces power consumption when the RS-232 interface is inactive. The ADM202EANZ does not provide this shutdown function. This difference is significant for battery-powered or low-power designs.
How many drivers and receivers does each device provide?
Both the ADM202EANZ and ADM206ANZ provide two RS-232 drivers and two RS-232 receivers. The ADM206ANZ additionally exposes control and handshake signals through its 24-lead package, whereas the ADM202EANZ in its 16-lead package provides the core driver/receiver functions.
Can the ADM202EANZ be used as a direct substitute for the ADM206ANZ in an existing design?
No. Because the devices differ in package size, pin count, and shutdown functionality, a direct substitution is not possible without PCB redesign and validation. The ADM206ANZ's additional control pins and shutdown feature must be accounted for, and the design must be re-verified against the manufacturer datasheet.