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 ADM207EAR are both RS-232 line transceivers from Analog Devices in the same 16-lead narrow SOIC package, sharing identical supply voltage, data rate, and temperature ranges, making them strong functional replacement candidates. The primary distinction is the driver/receiver channel configuration, so the ADM207EAR can serve as a substitute for the ADM202EARN where the additional receiver channel is acceptable, provided the pinout and channel arrangement are validated against the target design.
Supply Voltage Range
High match
Data Rate
High match
Driver/Receiver Channel Count
Validation required
Package Type
High match
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 | ADM207EAR | Why it matters |
|---|---|---|---|
| Number of Drivers/Receivers | 2/2 | 5/3 | Determines how many RS-232 communication channels are available; a 5/3 device supports more simultaneous signal lines than a 2/2 device. |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) | 24-SOIC (0.295", 7.50mm Width) | Footprint and pin count must match the PCB layout; different packages are not drop-in compatible. |
| Number of Pins | 16 | 24 | Pin count affects board routing and socket compatibility; mismatched pin counts prevent direct substitution. |
| Supply Voltage Range | 4.5V to 5.5V | 4.5V to 5.5V | Both operate from a single 5V supply, so power rail requirements are compatible. |
| Data Rate | 230 kbps | 120 kbps | Maximum signaling speed differs; the ADM202EARN supports higher throughput than the ADM207EAR. |
| Number of External Capacitors | 4 (0.1 µF) | 4 (0.1 µF) | Charge-pump capacitor count affects board space and BOM; both require the same number of external capacitors. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Both are rated for industrial temperature ranges, so environmental compatibility is equivalent. |
| ESD Protection (RS-232 Pins) | ±15 kV (IEC 1000-4-2 Air/Ground) | ±15 kV (IEC 1000-4-2 Air/Ground) | Both offer enhanced ESD robustness on the RS-232 interface, important for exposed connectors. |
| Mounting Type | Surface Mount | Surface Mount | Both are surface-mount devices, so assembly process compatibility is maintained. |
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 | ADM207EAR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Obsolete | Obsolete |
| Type | Transceiver | Transceiver |
| Protocol | RS232 | RS232 |
| Number of Drivers/Receivers | 2/2 | 5/3 |
| 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 are the key differences between the ADM202EARN and ADM207EAR?
The ADM202EARN is a 2-driver/2-receiver RS-232 transceiver in a 16-lead narrow SOIC package, while the ADM207EAR is a 5-driver/3-receiver RS-232 transceiver in a 24-lead SOIC package. The ADM207EAR provides more driver/receiver channels and additional features such as a shutdown mode, whereas the ADM202EARN is a simpler 2T2R device.
Are the ADM202EARN and ADM207EAR pin-compatible?
No. The ADM202EARN uses a 16-lead narrow SOIC (R-16) package, and the ADM207EAR uses a 24-lead SOIC (R-24) package. They have different pin counts and pinouts, so they are not drop-in replacements for each other.
Do both devices operate from a single 5 V supply?
Yes. Both the ADM202EARN and ADM207EAR are specified for operation from a single +5 V supply and use on-chip charge pump converters to generate the RS-232 voltage levels required for transmission.
What data rate do the ADM202EARN and ADM207EAR support?
Both devices are specified for RS-232 data rates up to 120 kbps, which is sufficient for standard RS-232 communication and is compliant with the EIA-232-E and V.28 specifications.
How many drivers and receivers does each device provide?
The ADM202EARN provides 2 drivers and 2 receivers. The ADM207EAR provides 5 drivers and 3 receivers, making it suitable for applications requiring more RS-232 channels such as multi-port serial interfaces.
Do these devices include ESD protection?
Yes. Both the ADM202EARN and ADM207EAR are members of the ADM2xxE family and include enhanced ESD protection on the RS-232 I/O pins, specified to withstand ±15 kV using the IEC 1000-4-2 air discharge method and ±8 kV contact discharge, as well as ±15 kV human body model.
Does the ADM207EAR offer a shutdown feature that the ADM202EARN lacks?
Yes. The ADM207EAR includes a shutdown mode that reduces supply current when the RS-232 interface is not in use. The ADM202EARN does not provide a shutdown control pin, so it does not offer this low-power standby capability.
Can the ADM202EARN and ADM207EAR be used interchangeably in an existing design?
No. Because they differ in package size, pin count, pinout, and channel count (2T2R versus 5T3R), they cannot be used interchangeably without redesigning the PCB layout and verifying the additional driver/receiver requirements and shutdown control against the target design.