Part A
ADM202EARNZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6062 PCS
- Package
- SOIC-16
- Series
- Interface - Drivers, Receivers, Transceivers
Replacement verdict
Compatible functional replacement candidate
The ADM202EARNZ and ADM202JRW are both dual RS-232 line drivers/receivers from Analog Devices with matching core interface specifications, making the ADM202EARNZ a viable functional replacement candidate for the ADM202JRW in most designs. The primary distinction lies in package and temperature-grade differences, which should be validated against the target board layout and operating environment before substitution.
Function and 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 | ADM202EARNZ | ADM202JRW | Why it matters |
|---|---|---|---|
| Package / Mounting Type | 16-Lead SOIC (surface mount) | 16-Lead SOIC_W (surface mount) | Both are surface-mount SOIC-16, but the wide-body (RW) vs narrow-body (RN) footprint affects PCB land pattern and board space, so they are not drop-in interchangeable without layout review. |
| Operating Temperature Range | -40°C to +85°C (industrial) | 0°C to +70°C (commercial) | The industrial-grade part supports colder and hotter environments; substituting the commercial-grade part in an industrial application may violate the system's thermal requirements. |
| ESD Protection (RS-232 I/O) | ±15 kV (IEC 1000-4-2 air/contact, ESD-enhanced "E" version) | Standard ESD protection (non-enhanced) | The enhanced ESD rating of the "E" version provides greater robustness against electrostatic discharge at the interface, which is critical for exposed connectors and field-replaceable equipment. |
| Number of Drivers / Receivers | 2 drivers / 2 receivers | 2 drivers / 2 receivers | Identical channel count ensures the same number of RS-232 lines can be driven and received, preserving interface functionality. |
| Data Rate | Up to 120 kbps | Up to 120 kbps | Matching data rate confirms both parts support the same maximum signaling speed for the RS-232 link. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Same single 5 V supply requirement means the power rail design does not need to change between the two parts. |
| On-Chip Charge Pump | Yes (internal, generates RS-232 levels from 5 V) | Yes (internal, generates RS-232 levels from 5 V) | Both integrate the charge pump, so no external ±10 V supplies are needed, keeping the external component count and design equivalent. |
| External Capacitors Required | 4 external capacitors (charge pump) | 4 external capacitors (charge pump) | Identical external capacitor count means the surrounding passive network and BOM structure remain the same. |
| Protocol Standard | RS-232 / V.28 compliant | RS-232 / V.28 compliant | Both meet the same RS-232 signaling standard, ensuring electrical compatibility with connected RS-232 devices. |
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 | ADM202EARNZ | ADM202JRW |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | 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 ADM202EARNZ and ADM202JRW?
The ADM202EARNZ is an enhanced ESD-protected RS-232 transceiver in an 16-lead SOIC_N package, specified for operation from −40°C to +85°C. The ADM202JRW is a standard (non-enhanced) RS-232 transceiver in a 16-lead SOIC_W package, specified for 0°C to +70°C. The "E" suffix denotes enhanced ESD protection (typically ±15 kV IEC 1000-4-2 on I/O pins), while the "J" denotes the commercial temperature grade.
Are the ADM202EARNZ and ADM202JRW pin-compatible?
Both devices are 16-lead RS-232 transceivers with the same pin function assignment (VCC, V+, V−, GND, T1IN, T2IN, R1OUT, R2OUT, T1OUT, T2OUT, R1IN, R2IN, and charge pump capacitor pins). However, the ADM202EARNZ uses the SOIC_N (narrow) body and the ADM202JRW uses the SOIC_W (wide) body, so the PCB land patterns differ and they are not drop-in replacements without layout verification.
Can the ADM202EARNZ be used as a replacement for the ADM202JRW?
Functionally both are dual RS-232 drivers/receivers with on-chip charge pumps, but substitution requires validating the wider temperature range (−40°C to +85°C vs 0°C to +70°C), the enhanced ESD ratings of the ADM202EARNZ, and the different package footprint (SOIC_N vs SOIC_W). The replacement is acceptable only after confirming these differences against the target design and manufacturer datasheets.
What ESD protection does the ADM202EARNZ offer compared to the ADM202JRW?
The ADM202EARNZ is specified with enhanced ESD protection on the RS-232 I/O pins, typically ±15 kV using the IEC 1000-4-2 air-gap discharge method and ±8 kV contact discharge, plus ±15 kV human body model. The ADM202JRW is a standard transceiver without the enhanced ESD suffix and does not carry the same specified ESD ratings; consult the respective datasheets for exact verified values.
What are the operating temperature ranges of these two devices?
The ADM202EARNZ is rated for the industrial temperature range of −40°C to +85°C. The ADM202JRW is rated for the commercial temperature range of 0°C to +70°C. Designs exposed to sub-zero or elevated ambient conditions should use the ADM202EARNZ.
Do both parts support the same RS-232 data rate and supply voltage?
Both are dual RS-232 drivers/receivers operating from a single +5 V supply with on-chip charge pump converters generating the required RS-232 voltage levels. Both support data rates up to 120 kbps, consistent with the standard ADM202 family specifications. Verify the exact datasheet limits for the specific grade before final design.
What package types do the ADM202EARNZ and ADM202JRW use?
The ADM202EARNZ is supplied in a 16-lead SOIC_N (narrow body, 3.90 mm) package. The ADM202JRW is supplied in a 16-lead SOIC_W (wide body, 7.50 mm) package. The different body widths require different PCB land patterns and affect board space and thermal characteristics.
Which part should be selected for a new industrial design?
For industrial applications requiring extended temperature operation and enhanced ESD robustness, the ADM202EARNZ is the appropriate choice due to its −40°C to +85°C rating and enhanced ESD specifications. The ADM202JRW is suitable for commercial-grade, cost-sensitive designs within 0°C to +70°C. Final selection should be based on verified datasheet parameters and system-level ESD and thermal requirements.