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SP3232EBET-L RS232 Transceiver: Equivalent & Substitute Parts
Part Overview
The SP3232EBET-L is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in a 16-SOIC surface mount package. This interface IC is designed for serial communication applications requiring RS232 protocol compliance. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain compatibility across electrical specifications, mechanical packaging, and functional performance parameters.
Substiute Parts
Key Parameters
| Parameter | SP3232EBET-L |
|---|---|
| Manufacturer | MaxLinear, Inc. |
| Type | Transceiver |
| Protocol | RS232 |
| Number of Drivers/Receivers | 2/2 |
| Duplex | Full |
| Data Rate | 250 kbps |
| Voltage Supply Range | 3V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
Substitute Part Grouping Explanation
Substitution of the SP3232EBET-L is determined by strict adherence to the following electrical and mechanical parameters:
Critical Compatibility Parameters:
- Protocol: RS232 (mandatory match)
- Number of Drivers/Receivers: 2/2 (mandatory match)
- Duplex: Full (mandatory match)
- Package / Case: 16-SOIC (mandatory match)
- Mounting Type: Surface Mount (mandatory match)
- Voltage Supply Range: Must encompass or match 3V ~ 5.5V
- Operating Temperature: Must encompass or match -40°C ~ 85°C
Allowable Variation Parameters:
- Receiver Hysteresis: Variation permitted (300 mV to 650 mV range acceptable)
- Data Rate: Variation permitted (120 kbps to 250 kbps acceptable, provided minimum meets application requirements)
- RoHS Status: ROHS3 Compliant acceptable as equivalent to RoHS Compliant
- Moisture Sensitivity Level (MSL): Lower MSL values (1 = Unlimited) represent improved performance
Substitute parts listed below meet all critical compatibility parameters while demonstrating active product status and current availability.
Parameter Comparison
| Part Number | Manufacturer | Drivers/Receivers | Data Rate | Receiver Hysteresis | Voltage Supply | Operating Temp | Package | Product Status | RoHS Status | MSL |
|---|---|---|---|---|---|---|---|---|---|---|
| SP3232EBET-L | MaxLinear, Inc. | 2/2 | 250 kbps | 300 mV | 3V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Discontinued | RoHS Compliant | 3 |
| MAX3232EEWE+ | Analog Devices Inc./Maxim Integrated | 2/2 | 250 kbps | 500 mV | 3V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | ROHS3 Compliant | 1 |
| MAX3232EEWE+T | Analog Devices Inc./Maxim Integrated | 2/2 | 250 kbps | 500 mV | 3V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | ROHS3 Compliant | 1 |
| ADM202EARWZ | Analog Devices Inc. | 2/2 | 230 kbps | 650 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | ROHS3 Compliant | 1 |
| ADM202EARWZ-REEL | Analog Devices Inc. | 2/2 | 230 kbps | 650 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | ROHS3 Compliant | 1 |
| ADM202JRWZ | Analog Devices Inc. | 2/2 | Not specified | 400 mV | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC | Active | ROHS3 Compliant | 1 |
| ADM202JRWZ-REEL | Analog Devices Inc. | 2/2 | Not specified | 400 mV | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC | Active | ROHS3 Compliant | 1 |
| ADM232AARWZ | Analog Devices Inc. | 2/2 | 200 kbps | 400 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | ROHS3 Compliant | 1 |
| ADM232AARWZ-REEL | Analog Devices Inc. | 2/2 | 200 kbps | 400 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | ROHS3 Compliant | 1 |
| ADM232LARZ | Analog Devices Inc. | 2/2 | 120 kbps | 650 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | ROHS3 Compliant | 1 |
| ADM232LARZ-REEL | Analog Devices Inc. | 2/2 | 120 kbps | 650 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | ROHS3 Compliant | 1 |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
The MAX3232EEWE+ and MAX3232EEWE+T represent the closest functional equivalents to the SP3232EBET-L. Both parts maintain identical electrical specifications including 250 kbps data rate, 3V ~ 5.5V supply voltage range, and -40°C ~ 85°C operating temperature. These parts are manufactured by Analog Devices Inc./Maxim Integrated and carry active product status with ROHS3 compliance. The MAX3232EEWE+T variant is available in Cut Tape & Digi-Reel packaging with higher inventory (2608 pcs), while MAX3232EEWE+ is supplied in Tube packaging (787 pcs). Both feature improved moisture sensitivity (MSL 1) compared to the original part.
Secondary Substitutes (Extended Temperature Range):
The ADM232AARWZ and ADM232AARWZ-REEL maintain the full -40°C ~ 85°C operating temperature range with 200 kbps data rate and 4.5V ~ 5.5V supply voltage. These parts are suitable for applications where the lower supply voltage minimum (4.5V vs. 3V) is acceptable. Inventory availability is strong (5200 pcs and 3160 pcs respectively).
Conditional Substitutes (Restricted Operating Range):
The ADM202JRWZ and ADM202JRWZ-REEL variants operate within a narrower temperature range (0°C ~ 70°C) and are suitable only for applications not requiring the full -40°C ~ 85°C specification. These parts are not recommended for designs requiring extended low-temperature operation.
Limited-Use Substitutes (Reduced Data Rate):
The ADM232LARZ and ADM232LARZ-REEL operate at 120 kbps, suitable only for applications with lower serial communication speed requirements. These parts are appropriate for legacy systems or applications with inherent bandwidth limitations.
Frequently Asked Questions (FAQ)
Q: Can MAX3232EEWE+ directly replace SP3232EBET-L in existing designs?
A: Yes. Both parts maintain identical 2/2 full-duplex RS232 configuration, 16-SOIC package, 250 kbps data rate, and -40°C ~ 85°C operating temperature. The 500 mV receiver hysteresis of the MAX3232 is within acceptable variation for RS232 applications. Pin-for-pin compatibility is maintained.
Q: What is the difference between MAX3232EEWE+ and MAX3232EEWE+T?
A: Both parts are electrically identical. The primary difference is packaging: MAX3232EEWE+ is supplied in Tube format, while MAX3232EEWE+T is supplied in Cut Tape & Digi-Reel format. Selection depends on assembly process requirements and volume needs.
Q: Why do ADM202 and ADM232 variants have different voltage supply minimums?
A: The ADM202 and ADM232 series specify 4.5V ~ 5.5V supply voltage, which is narrower than the SP3232EBET-L specification of 3V ~ 5.5V. These parts are suitable only for applications where the minimum supply voltage is 4.5V or higher.
Q: Are all substitute parts RoHS compliant?
A: Yes. All listed substitute parts carry ROHS3 compliance, which is equivalent to RoHS compliance. The original SP3232EBET-L is RoHS Compliant; all substitutes meet or exceed this requirement.
Q: What does MSL rating mean for component selection?
A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to moisture before soldering. The SP3232EBET-L has MSL 3 (168 hours); all substitute parts have MSL 1 (Unlimited), representing superior moisture resistance and reduced handling constraints during assembly.
Q: Can ADM202JRWZ be used in applications requiring -40°C operation?
A: No. The ADM202JRWZ operates within 0°C ~ 70°C range and is not suitable for applications requiring -40°C minimum operating temperature. Use ADM202EARWZ or MAX3232EEWE+ variants for extended low-temperature requirements.
Q: Is data rate reduction acceptable when substituting with ADM232LARZ?
A: Data rate reduction from 250 kbps to 120 kbps is acceptable only if the application does not require higher serial communication speeds. System-level validation is necessary to confirm compatibility with existing baud rate configurations.
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