Part A
ADM202JRN
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5083 Stückzahl
- Package
- SOIC-16
- Series
- Interface-Treiber, Empfänger, Transceiver
Replacement verdict
Compatible functional replacement candidate
The ADM202EARN and ADM202JRN are functionally equivalent RS-232 transceivers from the same manufacturer family, sharing identical pinout, package, and core electrical specifications. The primary distinction lies in their operating temperature range and corresponding qualification grade, making the ADM202EARN a suitable functional substitute for the ADM202JRN in applications where the extended industrial temperature range is acceptable or beneficial.
Function and Interface Type
High match
Pinout and Package
High match
Operating Temperature Range
Validation required
Supply Voltage and Data Rate
High match
Parts at a glance
Part B
ADM202EARN
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7559 Stückzahl
- Package
- SOIC-16
- Series
- Interface-Treiber, Empfänger, Transceiver
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADM202EARN | ADM202JRN | Why it matters |
|---|---|---|---|
| ESD Protection (IEC 1000-4-2) | ±15 kV (air/contact) | Not specified / standard | The "E" variant includes enhanced ESD protection, making it more robust in harsh environments and a key differentiator for rugged applications. |
| Number of Drivers/Receivers | 2 / 2 | 2 / 2 | Defines the channel count; both provide dual transceivers for full-duplex or multi-line RS-232 communication. |
| Data Rate | 120 kbps | 120 kbps | Maximum signaling speed; identical rates mean equivalent throughput for serial communication links. |
| Supply Voltage | 5 V | 5 V | Both operate from a single 5 V supply, ensuring power compatibility in existing designs. |
| Operating Temperature Range | -40°C to +85°C | 0°C to +70°C | The extended industrial range of the EARN version allows use in wider temperature environments, while JRN is limited to commercial ranges. |
| Package / Mounting | 16-SOIC (Surface Mount) | 16-SOIC (Surface Mount) | Identical package and footprint enable direct PCB drop-in replacement without layout changes. |
| Number of Pins | 16 | 16 | Pin count compatibility ensures the parts are physically interchangeable on the same socket. |
| Protocol | RS-232 | RS-232 | Both implement the same serial interface standard, ensuring functional equivalence in communication systems. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM202JRN | ADM202EARN |
|---|---|---|
| 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 | 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 ADM202EARN and ADM202JRN?
The primary difference is the operating temperature range and corresponding grade. The ADM202EARN is specified for the extended industrial temperature range of −40°C to +85°C, while the ADM202JRN is specified for the commercial temperature range of 0°C to +70°C. Both are dual-channel RS-232 line drivers/receivers in a 16-lead SOIC package and share the same functional pinout.
Are the ADM202EARN and ADM202JRN pin-to-pin compatible?
Yes. Both devices are offered in the same 16-lead SOIC (R-16) package with an identical pin configuration, so they are pin-to-pin compatible. The difference lies in the temperature grade, not the package or pinout.
Can the ADM202JRN be used as a drop-in replacement for the ADM202EARN?
Only if the application's ambient temperature stays within 0°C to +70°C. The ADM202JRN is rated for the commercial range and is not specified for operation below 0°C or above +70°C, whereas the ADM202EARN is rated for −40°C to +85°C. Substitution outside the commercial range is not supported by the datasheet.
What data rate do the ADM202EARN and ADM202JRN support?
Both devices are specified for RS-232 data rates up to 120 kbps, which is sufficient for standard RS-232 communication. This parameter is common to both temperature grades.
Do both parts operate from a single +5 V supply?
Yes. Both the ADM202EARN and ADM202JRN operate from a single +5 V ±10% supply and use on-chip charge pump circuitry to generate the RS-232 voltage levels, eliminating the need for a separate ±12 V supply.
How many drivers and receivers do the ADM202EARN and ADM202JRN integrate?
Each device integrates two RS-232 drivers and two RS-232 receivers, making them dual-channel transceivers suitable for interfacing a UART or similar logic to an RS-232 port.
Do the ADM202EARN and ADM202JRN include ESD protection?
Yes. Both parts are members of the ADM202E family, which incorporates enhanced ESD protection on the RS-232 I/O pins. Designers should confirm the exact ESD rating in the specific manufacturer datasheet revision for the grade being used.
Which part should be selected for an industrial-temperature design?
The ADM202EARN should be selected for designs that must operate over −40°C to +85°C. The ADM202JRN is intended for commercial applications limited to 0°C to +70°C and should not be used where the extended industrial range is required.