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SP3232ECT-L RS232 Transceiver Equivalent & Substitute Parts
Part Overview
The SP3232ECT-L is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in a 16-SOIC surface mount package. This device operates across a 3V to 5.5V supply range and supports data rates up to 235 Kbps with a receiver hysteresis of 300 mV. The SP3232ECT-L is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and system maintenance.
Substiute Parts
Key Parameters
| Parameter | SP3232ECT-L |
|---|---|
| Manufacturer | MaxLinear, Inc. |
| Type | Transceiver |
| Protocol | RS232 |
| Number of Drivers/Receivers | 2/2 |
| Duplex | Full |
| Receiver Hysteresis | 300 mV |
| Data Rate | 235 Kbps |
| Voltage - Supply | 3V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
Substitute Part Grouping Explanation
Substitution of the SP3232ECT-L is determined by strict adherence to the following electrical and mechanical parameters:
- Protocol: RS232 full-duplex transceiver with 2/2 driver/receiver configuration
- Package: 16-SOIC surface mount form factor
- Supply Voltage Range: Minimum 3V to 5.5V compatibility
- Data Rate: Minimum 120 Kbps operational capability
- Receiver Hysteresis: 300 mV to 650 mV acceptable range
- Operating Temperature: 0°C to 70°C or extended range (-40°C to 85°C)
- Mounting Type: Surface mount only
All substitute parts listed below meet these core criteria. Differences in receiver hysteresis, data rate, temperature range, and compliance certifications are noted but do not preclude substitution when application requirements permit.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Duplex | Receiver Hysteresis | Data Rate | Supply Voltage | Operating Temperature | Package | Product Status | Packaging Type |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SP3232ECT-L | MaxLinear, Inc. | RS232 | 2/2 | Full | 300 mV | 235 Kbps | 3V ~ 5.5V | 0°C ~ 70°C | 16-SOIC (0.295", 7.50mm) | Obsolete | — |
| ADM202EARWZ | Analog Devices Inc. | RS232 | 2/2 | Full | 650 mV | 230 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.295", 7.50mm) | Active | Tube |
| ADM202EARWZ-REEL | Analog Devices Inc. | RS232 | 2/2 | Full | 650 mV | 230 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.295", 7.50mm) | Active | Tape & Reel (TR) |
| ADM202JRWZ | Analog Devices Inc. | RS232 | 2/2 | Full | 400 mV | — | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC (0.295", 7.50mm) | Active | Tube |
| ADM202JRWZ-REEL | Analog Devices Inc. | RS232 | 2/2 | Full | 400 mV | — | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC (0.295", 7.50mm) | Active | Tape & Reel (TR) |
| ADM232AARWZ | Analog Devices Inc. | RS232 | 2/2 | Full | 400 mV | 200 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.295", 7.50mm) | Active | Tube |
| ADM232AARWZ-REEL | Analog Devices Inc. | RS232 | 2/2 | Full | 400 mV | 200 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.295", 7.50mm) | Active | Cut Tape (CT) & Digi-Reel® |
| ADM232LARZ | Analog Devices Inc. | RS232 | 2/2 | Full | 650 mV | 120 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.295", 7.50mm) | Active | Tube |
| ADM232LARZ-REEL | Analog Devices Inc. | RS232 | 2/2 | Full | 650 mV | 120 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.295", 7.50mm) | Active | Cut Tape (CT) & Digi-Reel® |
| ADM232LJRZ | Analog Devices Inc. | RS232 | 2/2 | Full | 650 mV | 120 Kbps | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC (0.295", 7.50mm) | Active | Tube |
| ADM232LJRZ-REEL | Analog Devices Inc. | RS232 | 2/2 | Full | 650 mV | 120 Kbps | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC (0.154", 3.90mm) | Active | Cut Tape (CT) & Digi-Reel® |
Engineering Selection Recommendations
All substitute parts listed are manufactured by Analog Devices Inc. and carry active product status, ensuring long-term availability and manufacturing support. The ADM202 and ADM232 series devices are ROHS3 compliant and REACH unaffected, meeting modern environmental and regulatory requirements. The SP3232ECT-L carries MSL 3 (168 hours), while all Analog Devices substitutes carry MSL 1 (unlimited), providing superior moisture protection during storage and handling.
Selection between substitute options depends on application-specific requirements:
For applications requiring extended temperature operation (-40°C to 85°C), select ADM202EARWZ, ADM202EARWZ-REEL, ADM232AARWZ, ADM232AARWZ-REEL, ADM232LARZ, or ADM232LARZ-REEL.
For applications constrained to 0°C to 70°C operation, ADM202JRWZ, ADM202JRWZ-REEL, ADM232LJRZ, or ADM232LJRZ-REEL are suitable.
For high-speed applications requiring data rates near 235 Kbps, ADM202EARWZ or ADM202EARWZ-REEL (230 Kbps) provide the closest performance match.
For packaging preference, tube packaging is available across all part variants. Tape & Reel and Cut Tape & Digi-Reel options are available for automated assembly processes.
Frequently Asked Questions (FAQ)
Q: Can ADM202JRWZ substitute for SP3232ECT-L in a 3V to 5.5V supply application?
A: No. ADM202JRWZ operates at 4.5V to 5.5V supply voltage, which does not cover the 3V minimum of the SP3232ECT-L. Applications requiring 3V operation must select a substitute that explicitly supports this lower voltage range. The SP3232ECT-L's 3V to 5.5V range is not matched by any listed substitute; applications must either operate at 4.5V or higher, or source alternative parts.
Q: What is the significance of receiver hysteresis differences between SP3232ECT-L (300 mV) and substitute parts (400–650 mV)?
A: Receiver hysteresis determines the voltage differential required to switch receiver output states, affecting noise immunity and signal integrity. The SP3232ECT-L's 300 mV hysteresis is lower than all substitutes. Applications with marginal signal levels or high noise environments may require circuit-level evaluation before substitution. Higher hysteresis provides greater noise immunity but may reduce sensitivity to weak signals.
Q: Are ADM232LJRZ and ADM232LJRZ-REEL identical except for packaging?
A: Both parts are functionally identical with one exception: ADM232LJRZ-REEL specifies a 16-SOIC package width of 0.154" (3.90mm), while ADM232LJRZ specifies 0.295" (7.50mm). This dimensional difference may affect PCB layout compatibility. Verify package dimensions against PCB footprint requirements before selection.
Q: Which substitute part offers the best compatibility with SP3232ECT-L for drop-in replacement?
A: ADM202JRWZ and ADM202JRWZ-REEL provide the closest operating temperature match (0°C to 70°C) and receiver hysteresis (400 mV) to the SP3232ECT-L. However, the 4.5V minimum supply voltage requirement must be accommodated in the application design. For applications already operating at 4.5V or higher, these parts are suitable direct replacements.
Q: What compliance certifications apply to all listed substitute parts?
A: All Analog Devices substitute parts are ROHS3 compliant and REACH unaffected. All carry ECCN EAR99 and HTSUS 8542.39.0001 classifications, matching the SP3232ECT-L regulatory profile.
Q: Can I use ADM232LARZ in place of ADM202EARWZ?
A: Both are functionally equivalent RS232 2/2 transceivers in 16-SOIC packages. ADM232LARZ operates at 120 Kbps maximum data rate compared to ADM202EARWZ at 230 Kbps. For applications requiring data rates above 120 Kbps, ADM202EARWZ is required. For lower-speed applications, ADM232LARZ is suitable and offers identical temperature range (-40°C to 85°C) and compliance certifications.
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