Part A
ADM202JRN
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5083 PCS
- Package
- SOIC-16
- Series
- Interface - Condutores, Receptores, Transceivers
Replacement verdict
Compatible functional replacement candidate
The ADM202EARNZ and ADM202JRN are functionally compatible RS-232 transceivers sharing the same pinout, package, and core interface architecture, making the ADM202EARNZ a viable replacement candidate for the ADM202JRN in most designs. The primary distinction lies in ESD robustness and temperature grading, so designers should confirm that the enhanced ESD protection and industrial temperature range of the ADM202EARNZ satisfy the target application's environmental and reliability requirements.
Interface Protocol
High match
Package Type
High match
Pin Configuration
High match
ESD Protection Level
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 | ADM202JRN | Why it matters |
|---|---|---|---|
| ESD Protection (IEC 61000-4-2) | ±15 kV (air/contact) | Not specified / standard | The "E" variant includes enhanced ESD protection, making it more robust in harsh environments and reducing the need for external protection components. |
| Operating Temperature Range | -40°C to +85°C | 0°C to +70°C | The extended industrial temperature range of the EARNZ allows operation in colder and hotter environments where the commercial-grade JRN would not be guaranteed. |
| Package / Mounting | 16-Lead SOIC (Narrow), Surface Mount | 16-Lead SOIC (Narrow), Surface Mount | Both use the same SOIC-16 narrow body footprint, so they are physically interchangeable on an existing PCB layout. |
| Data Rate | 120 kbps | 120 kbps | Identical data rate means both support the same RS-232 communication speeds, so timing behavior is unchanged. |
| Number of Drivers / Receivers | 2 / 2 | 2 / 2 | Both provide two drivers and two receivers, matching the standard RS-232 dual-channel configuration for drop-in functional replacement. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Same 5 V single-supply operation means no power rail redesign is needed when substituting one part for the other. |
| On-Chip Charge Pump | Yes (internal) | Yes (internal) | Both integrate the charge pump needed to generate RS-232 voltage levels from a single 5 V supply, avoiding external bipolar supplies. |
| Manufacturer | Analog Devices | Analog Devices | Same manufacturer and product family ensures consistent design, documentation, and qualification data for both parts. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM202JRN | ADM202EARNZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Type | Transceiver | Transceiver |
| Protocol | RS232 | RS232 |
| Number of Drivers/Receivers | 2/2 | 2/2 |
| Duplex | Full | Full |
| Receiver Hysteresis | 400 mV | 650 mV |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Data Rate | - | 230kbps |
Frequently asked questions
What are the key differences between the ADM202EARNZ and the ADM202JRN?
The ADM202EARNZ is an enhanced ESD-protected RS-232 transceiver in a 16-lead SOIC package, specified over the industrial temperature range of −40°C to +85°C, with ±15 kV ESD protection on the RS-232 I/O pins. The ADM202JRN is the standard (non-E) version in a 16-lead SOIC package, specified over the commercial temperature range of 0°C to +70°C, with lower ESD protection (typically ±2 kV on the RS-232 pins). Both are dual-channel RS-232 drivers/receivers with on-chip charge pump converters.
Are the ADM202EARNZ and ADM202JRN pin-compatible?
Yes. Both devices are offered in the same 16-lead SOIC (R-16) package and share the same pinout, so they are pin-compatible. However, the ADM202EARNZ is specified over the industrial temperature range while the ADM202JRN is specified over the commercial range, so the choice depends on the operating temperature requirements of the application.
What ESD protection do the ADM202EARNZ and ADM202JRN provide?
The ADM202EARNZ provides enhanced ESD protection of ±15 kV on the RS-232 I/O pins (human body model), making it suitable for applications exposed to electrostatic discharge. The ADM202JRN provides standard ESD protection of approximately ±2 kV on the RS-232 pins. Designs requiring robust ESD immunity should use the ADM202EARNZ.
What temperature ranges do the ADM202EARNZ and ADM202JRN support?
The ADM202EARNZ is specified for the industrial temperature range of −40°C to +85°C. The ADM202JRN is specified for the commercial temperature range of 0°C to +70°C. For industrial or outdoor environments, the ADM202EARNZ is the appropriate choice.
Do both devices operate from a single +5 V supply?
Yes. Both the ADM202EARNZ and ADM202JRN operate from a single +5 V ±10% supply and use on-chip charge pump circuitry to generate the RS-232 voltage levels required for transmission, eliminating the need for external ±12 V supplies.
What data rate do the ADM202EARNZ and ADM202JRN support?
Both devices support RS-232 data rates up to 120 kbps, which is sufficient for standard serial communication interfaces. The data rate specification is the same for both the E and non-E versions.
Can the ADM202JRN be used as a drop-in replacement for the ADM202EARNZ?
Functionally and pin-wise, the ADM202JRN can replace the ADM202EARNZ in circuits that operate within 0°C to +70°C and do not require enhanced ESD protection. However, because the ADM202JRN has a narrower temperature range and lower ESD rating, it should not be substituted in industrial-temperature or high-ESD-exposure applications without validating those requirements against the datasheet.
What package do the ADM202EARNZ and ADM202JRN use?
Both devices are supplied in a 16-lead SOIC (Small Outline Integrated Circuit) package, designated R-16 by Analog Devices. The package is surface-mount and suitable for automated assembly. The "N" suffix in both part numbers indicates the SOIC package option.