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MAX3241ECAI RS232 Transceiver Equivalent & Substitute Parts
Part Overview
The MAX3241ECAI is a full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, configured with 3 drivers and 5 receivers in a 28-SSOP surface mount package. This device operates across a 3V to 5.5V supply range with a 250 kbps data rate and is designed for industrial and commercial serial communication applications.
The MAX3241ECAI is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this interface standard.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MAX3241ECAI |
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Type | Transceiver |
| Protocol | RS232 |
| Number of Drivers/Receivers | 3/5 |
| Duplex | Full |
| Data Rate | 250 kbps |
| Voltage - Supply | 3V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C |
| Receiver Hysteresis | 500 mV |
| Package / Case | 28-SSOP (0.209", 5.30mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX3241ECAI is determined by the following critical parameters:
- Driver/Receiver Configuration: 3/5 (3 drivers, 5 receivers)
- Protocol Compliance: RS232 full-duplex
- Package Type: 28-SSOP with identical physical dimensions
- Electrical Specifications: Supply voltage range 3V ~ 5.5V, data rate 250 kbps, receiver hysteresis tolerance
- Operating Temperature Range: Compatibility with 0°C ~ 70°C minimum
- Mounting Type: Surface mount only
Substitute parts are grouped into three categories:
Parametric Equivalents (MAX3241ECAI+, MAX3243ECAI+, MAX3244ECAI+, MAX3244CAI+): Active-status parts from Analog Devices Inc./Maxim Integrated with identical electrical and mechanical specifications. These maintain full compatibility with the original design.
Direct Equivalents (ICL3241ECAZ-T, ICL3241EIAZ-T): Renesas Electronics Corporation parts with matching 3/5 driver/receiver configuration, RS232 protocol, and 28-SSOP packaging. These provide cross-manufacturer compatibility.
Alternative Configuration (MAX3250CAI+): Maxim part with reduced driver/receiver count (2/2) in identical packaging. This part is suitable only for applications requiring fewer communication channels.
Extended Temperature Variants (ST3241EBPR, ICL3241EIAZ-T): Parts rated for -40°C ~ 85°C operating range, providing enhanced thermal performance for demanding environments.
Parameter Comparison
| Part Number | Manufacturer | Drivers/Receivers | Data Rate | Supply Voltage | Operating Temp | Receiver Hysteresis | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| MAX3241ECAI | Analog Devices | 3/5 | 250 kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500 mV | 28-SSOP | Obsolete | Non-compliant |
| MAX3241ECAI+ | Analog Devices | 3/5 | 250 kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500 mV | 28-SSOP | Active | ROHS3 Compliant |
| MAX3243ECAI+ | Analog Devices | 3/5 | 250 kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500 mV | 28-SSOP | Active | ROHS3 Compliant |
| MAX3244ECAI+ | Analog Devices | 3/5 | 250 kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500 mV | 28-SSOP | Active | ROHS3 Compliant |
| MAX3244CAI+ | Analog Devices | 3/5 | 250 kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500 mV | 28-SSOP | Active | ROHS3 Compliant |
| MAX3250CAI+ | Analog Devices | 2/2 | 250 kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500 mV | 28-SSOP | Active | ROHS3 Compliant |
| ICL3241ECAZ-T | Renesas | 3/5 | 250 kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500 mV | 28-SSOP | Active | ROHS3 Compliant |
| ICL3241EIAZ-T | Renesas | 3/5 | 250 kbps | 3V ~ 5.5V | -40°C ~ 85°C | 500 mV | 28-SSOP | Active | ROHS3 Compliant |
| ST3241ECPR | STMicroelectronics | 3/5 | 250 kbps | 3V ~ 5.5V | 0°C ~ 70°C | 300 mV | 28-SSOP | Active | ROHS3 Compliant |
| ST3241EBPR | STMicroelectronics | 3/5 | 250 kbps | 3V ~ 5.5V | -40°C ~ 85°C | 300 mV | 28-SSOP | Active | ROHS3 Compliant |
| ICL3241EIAZ | Renesas | 3/5 | 250 kbps | 3V ~ 5.5V | -40°C ~ 85°C | 500 mV | 28-SSOP | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitutes: MAX3241ECAI+, MAX3243ECAI+, MAX3244ECAI+, and MAX3244CAI+ are direct replacements from the original manufacturer. All are active-status parts with ROHS3 compliance, addressing the RoHS non-compliance limitation of the obsolete MAX3241ECAI.
Cross-Manufacturer Alternatives: ICL3241ECAZ-T and ICL3241EIAZ-T from Renesas Electronics provide equivalent electrical and mechanical specifications with active product status and ROHS3 compliance. These parts are suitable for designs requiring multi-source qualification.
Extended Temperature Applications: For systems operating beyond the standard 0°C ~ 70°C range, ST3241EBPR and ICL3241EIAZ-T support -40°C ~ 85°C operation. ST3241EBPR features reduced receiver hysteresis (300 mV versus 500 mV), which may affect noise margin in marginal signal conditions.
Reduced Channel Configuration: MAX3250CAI+ provides a 2/2 driver/receiver configuration in identical packaging. This part is applicable only to applications requiring fewer communication channels and should not be used as a direct replacement for designs utilizing all five receiver channels.
Compliance Consideration: All recommended substitutes carry ROHS3 compliance certification, eliminating the compliance gap present in the obsolete MAX3241ECAI.
Frequently Asked Questions (FAQ)
Q: Can MAX3250CAI+ replace MAX3241ECAI in all applications?
A: No. MAX3250CAI+ provides only 2 drivers and 2 receivers, compared to the 3/5 configuration of MAX3241ECAI. Use this part only if your design requires fewer communication channels.
Q: What is the difference between ST3241ECPR and ST3241EBPR?
A: Both are STMicroelectronics parts with identical electrical specifications. ST3241EBPR supports extended operating temperature range (-40°C ~ 85°C) compared to ST3241ECPR (0°C ~ 70°C). ST3241EBPR is suitable for industrial and automotive applications requiring wider temperature tolerance.
Q: Are Renesas ICL3241 parts pin-compatible with Maxim MAX3241 parts?
A: Yes. ICL3241ECAZ-T, ICL3241EIAZ-T, and ICL3241EIAZ maintain identical 28-SSOP packaging and pinout with MAX3241 variants, enabling direct board-level substitution.
Q: Does receiver hysteresis difference affect compatibility?
A: Receiver hysteresis affects noise immunity. ST3241 parts feature 300 mV hysteresis versus 500 mV for MAX3241 and ICL3241 variants. In applications with marginal signal quality, the higher hysteresis of MAX3241 and ICL3241 parts provides superior noise rejection. ST3241 parts are suitable for clean signal environments.
Q: What packaging options are available for these substitutes?
A: MAX3241ECAI+ and MAX3243ECAI+ are supplied in Tube packaging. MAX3244ECAI+, MAX3244CAI+, and MAX3250CAI+ are supplied in Tube packaging. ICL3241ECAZ-T and ICL3241EIAZ-T are supplied in Tape & Reel format. ST3241ECPR and ST3241EBPR are supplied in Cut Tape & Digi-Reel format. ICL3241EIAZ is supplied in Tube packaging.
Q: Which substitute offers the best long-term availability?
A: All recommended substitutes carry active product status. MAX3241ECAI+, MAX3243ECAI+, MAX3244ECAI+, and MAX3244CAI+ from Analog Devices and ICL3241ECAZ-T, ICL3241EIAZ-T, and ICL3241EIAZ from Renesas represent established product lines with multi-year availability projections.
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