Part A
ADM202EARN
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7559 個数
- Package
- SOIC-16
- Series
- インターフェース - ドライバ、レシーバ、トランシーバ
Replacement verdict
Compatible functional replacement candidate
The ADM202EARN and ADM202JRW are both dual-channel RS-232 transceivers from Analog Devices with matching driver/receiver counts, supply voltage requirements, and data-rate capability, making them functionally interchangeable in most designs. The primary distinction lies in package and temperature-grade options, so the ADM202JRW can serve as a functional replacement for the ADM202EARN provided the board layout accommodates the SOIC-16W footprint and the target application's thermal environment is validated against the selected grade.
Driver/Receiver Channel Count
High match
Supply Voltage Range
High match
Package Type
Validation required
Operating Temperature Range
Validation required
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 | ADM202JRW | Why it matters |
|---|---|---|---|
| Package / Mounting Type | 16-Lead SOIC (Narrow), Surface Mount | 16-Lead SOIC (Wide), Surface Mount | Footprint and board layout differ between narrow and wide SOIC bodies, so they are not drop-in replacements without layout changes. |
| Operating Temperature Range | -40°C to +85°C (industrial) | 0°C to +70°C (commercial) | The wider industrial range of the EARN version allows operation in harsher environments where the commercial-grade JRW part may not be specified. |
| Number of Drivers / Receivers | 2 / 2 | 2 / 2 | Both provide the same dual-channel RS-232 interface, so channel count is functionally equivalent. |
| Data Rate | Up to 120 kbps | Up to 120 kbps | Identical maximum data rate means both support the same serial communication throughput. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Same single 5 V supply requirement allows use in the same power architecture. |
| ESD Protection (RS-232 Pins) | ±15 kV (IEC 1000-4-2 Air/Ground) | ±15 kV (IEC 1000-4-2 Air/Ground) | Equivalent ESD robustness on the interface pins ensures comparable protection in both variants. |
| Charge Pump / External Capacitors | On-chip charge pump, 4 external capacitors | On-chip charge pump, 4 external capacitors | Same external capacitor count and charge-pump topology means identical supporting circuitry. |
| Interface Standard | RS-232 (EIA/TIA-232-E) | RS-232 (EIA/TIA-232-E) | Both comply with the same RS-232 standard, ensuring protocol-level compatibility. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM202EARN | ADM202JRW |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Obsolete | Obsolete |
| Type | Transceiver | Transceiver |
| Protocol | RS232 | RS232 |
| Number of Drivers/Receivers | 2/2 | 2/2 |
| Duplex | Full | Full |
| Receiver Hysteresis | 650 mV | 400 mV |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
| Data Rate | 230kbps | - |
Frequently asked questions
What are the key differences between the ADM202EARN and ADM202JRW?
The ADM202EARN is specified for the industrial temperature range of −40°C to +85°C and is supplied in an 16-lead narrow SOIC package, while the ADM202JRW is specified for the commercial temperature range of 0°C to +70°C and is supplied in a 16-lead wide SOIC package. Both are dual RS-232 line drivers/receivers with on-chip charge pump converters.
Are the ADM202EARN and ADM202JRW functionally interchangeable?
Functionally both devices provide two RS-232 drivers and two RS-232 receivers with an integrated charge pump, but they are not drop-in replacements for each other because the ADM202EARN uses a narrow SOIC body and the ADM202JRW uses a wide SOIC body, resulting in different PCB land patterns. The temperature grade difference must also be validated against the target application.
What data rate do the ADM202EARN and ADM202JRW support?
Both devices are specified for RS-232 data rates up to 120 kbps, which is sufficient for standard RS-232 communication and is consistent with the ADM202 family datasheet specifications.
What supply voltage do the ADM202EARN and ADM202JRW require?
Both devices operate from a single +5 V supply and use internal charge pump circuitry to generate the positive and negative RS-232 output levels required for compliant RS-232 signaling.
How many drivers and receivers do the ADM202EARN and ADM202JRW integrate?
Each device integrates two RS-232 drivers and two RS-232 receivers, making them suitable for dual-channel serial interface applications such as PC serial ports and modem interfaces.
Do the ADM202EARN and ADM202JRW include ESD protection?
Yes, both devices are part of the ADM202E family, which includes enhanced ESD protection on the RS-232 input/output pins. Designers should confirm the exact ESD rating in the manufacturer datasheet for the specific grade before finalizing the design.
Which package options apply to the ADM202EARN and ADM202JRW?
The ADM202EARN is offered in a 16-lead narrow SOIC package, while the ADM202JRW is offered in a 16-lead wide SOIC package. The package suffix in each part number identifies the body width and must be matched to the PCB footprint.
Can the ADM202JRW be used as a replacement for the ADM202EARN in an existing design?
Replacement is not direct because the wide SOIC package of the ADM202JRW does not match the narrow SOIC footprint of the ADM202EARN, and the commercial temperature range of the ADM202JRW is narrower than the industrial range of the ADM202EARN. A redesign of the PCB land pattern and a temperature-range review are required before substitution.