Part A
ADM202EARN
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7559 PCS
- Package
- SOIC-16
- Series
- Interface - Condutores, Receptores, Transceivers
Replacement verdict
Compatible functional replacement candidate
The ADM202EARNZ is a lead-free, RoHS-compliant variant of the ADM202EARN and is functionally interchangeable in the same application, with identical electrical performance and pinout. The only meaningful distinction is package finish and environmental compliance, so the EARNZ version can be used as a direct substitute where lead-free assembly is required.
Function and Interface Type
High match
Pinout and Package
High match
Electrical Specifications
High match
Environmental Compliance
Validation required
Parts at a glance
Part B
ADM202EARNZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6062 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 | ADM202EARN | Why it matters |
|---|---|---|---|
| Number of Drivers/Receivers | 2/2 | 2/2 | Defines the channel count; both provide two RS-232 drivers and two receivers, so they are functionally interchangeable in this respect. |
| Data Rate | 230 kbps | 230 kbps | Maximum signaling speed; identical data rate ensures the same throughput capability in the target application. |
| Supply Voltage | 5 V | 5 V | Operating supply rail; both require a single 5 V supply, so power design is unchanged. |
| Duplex | Full | Full | Full-duplex operation allows simultaneous transmit and receive; identical duplex mode preserves communication behavior. |
| Receiver Hysteresis | 650 mV | 650 mV | Hysteresis improves noise immunity on the receive lines; matching values ensure equivalent noise tolerance. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | Defines the environmental range for reliable operation; identical ranges mean the same application environments are supported. |
| Mounting Type | Surface Mount | Surface Mount | Determines PCB assembly method; both are surface-mount SOIC devices, so the same footprint and process apply. |
| Package / Case | 16-SOIC | 16-SOIC | Package outline affects board layout and solderability; identical 16-SOIC packages allow direct drop-in replacement. |
| Packaging | Tube | Tape & Reel | Packaging format affects manufacturing handling; the Z suffix denotes tube packaging while the non-Z part is typically supplied on tape and reel, which matters for automated assembly lines. |
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 | ADM202EARNZ |
|---|---|---|
| Part Status | Obsolete | Active |
| 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 difference between ADM202EARNZ and ADM202EARN?
The ADM202EARNZ is the RoHS-compliant, lead-free (Pb-free) version of the ADM202EARN. Both are dual RS-232 line drivers/receivers in a 16-lead narrow SOIC package from Analog Devices. The "Z" suffix in ADM202EARNZ denotes the lead-free/RoHS-compliant package finish, while ADM202EARN is the older leaded (non-RoHS) version.
Are ADM202EARNZ and ADM202EARN functionally interchangeable?
Yes. Both devices share the same electrical specifications, pinout, and 16-lead narrow SOIC (R-16) package. The only difference is the package finish (lead-free vs. leaded). They are functionally interchangeable in designs that do not have a specific RoHS or leaded-finish requirement.
What are the key specifications of the ADM202E?
The ADM202E is a dual RS-232 driver/receiver that operates from a single +5 V supply. It features two drivers and two receivers, an on-chip charge pump (using four external capacitors) to generate RS-232 voltage levels, data rates up to 120 kbps, and is specified over the industrial temperature range of -40°C to +85°C. It meets EIA/TIA-232-E and V.28 specifications.
Which package do ADM202EARNZ and ADM202EARN use?
Both parts are supplied in the 16-lead narrow SOIC package (Analog Devices package designation R-16). The package dimensions and pin assignments are identical between the two versions.
Is ADM202EARNZ RoHS compliant?
Yes. The "Z" suffix indicates the ADM202EARNZ is RoHS-compliant and uses a lead-free (Pb-free) finish, making it suitable for designs requiring RoHS compliance. The ADM202EARN is the non-RoHS, leaded version.
Can ADM202EARN be used as a drop-in replacement for ADM202EARNZ?
Electrically and mechanically, yes, since both share the same die, pinout, and package. However, if the design or production process mandates RoHS compliance, ADM202EARN (leaded) would not satisfy that requirement, and ADM202EARNZ should be used instead.
What supply voltage and external components does the ADM202E require?
The ADM202E operates from a single +5 V ±10% supply. It requires four external capacitors (typically 0.1 µF) for the internal charge pump to generate the positive and negative RS-232 output levels. No additional ±12 V supplies are needed.