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MAX3243MPWREP Equivalent & Substitute Parts
Part Overview
The MAX3243MPWREP is an active RS232 transceiver interface IC manufactured by Texas Instruments, configured as a 3/5 full-duplex transceiver in a 28-TSSOP surface mount package. This component is designed for serial communication applications requiring RS232 protocol compliance across industrial and commercial temperature ranges. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for high-reliability applications. Equivalent and substitute parts are identified based on matching functional specifications, electrical parameters, and package compatibility to ensure direct replacement capability in existing designs.
Substiute Parts
Key Parameters
| Parameter | MAX3243MPWREP |
|---|---|
| Manufacturer | Texas Instruments |
| Type | Transceiver |
| Protocol | RS232 |
| Drivers/Receivers | 3/5 |
| Duplex | Full |
| Data Rate | 250 kbps |
| Voltage Supply | 3V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C |
| Package Type | 28-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| Receiver Hysteresis | 500 mV |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the MAX3243MPWREP are selected based on the following critical parameters that determine functional equivalence:
Primary Matching Criteria:
- Protocol: RS232
- Configuration: 3/5 Full-Duplex Transceiver
- Voltage Supply Range: 3V ~ 5.5V
- Data Rate: 250 kbps
- Receiver Hysteresis: 500 mV
- Mounting Type: Surface Mount
- RoHS3 Compliance: Required
Package Compatibility: Substitutes are grouped by package type. The MAX3243MPWREP uses 28-TSSOP packaging. Direct substitutes maintain this package specification. Parts in alternative packages (28-SSOP) are listed separately as they require PCB layout modifications.
Temperature Range Considerations: The main part operates across -55°C ~ 125°C. Substitute parts are listed with their respective operating temperature ranges. Selection depends on application temperature requirements.
Packaging Format: The main part is supplied in Tape & Reel (TR) format. Substitute parts are available in multiple packaging formats including Tube, Cut Tape, and alternative reel configurations.
Parameter Comparison
| Part Number | Manufacturer | Package Type | Packaging Format | Data Rate | Operating Temp | Receiver Hysteresis | Voltage Supply | RoHS Status | MSL Rating |
|---|---|---|---|---|---|---|---|---|---|
| MAX3243MPWREP | Texas Instruments | 28-TSSOP (0.173", 4.40mm) | Tape & Reel (TR) | 250 kbps | -55°C ~ 125°C | 500 mV | 3V ~ 5.5V | ROHS3 Compliant | 1 (Unlimited) |
| ICL3243ECVZ | Renesas Electronics | 28-TSSOP (0.173", 4.40mm) | Tube | 250 kbps | 0°C ~ 70°C | 500 mV | 3V ~ 5.5V | ROHS3 Compliant | 3 (168 Hours) |
| ICL3243ECVZ-T | Renesas Electronics | 28-TSSOP (0.173", 4.40mm) | Cut Tape (CT) & Digi-Reel® | 250 kbps | 0°C ~ 70°C | 500 mV | 3V ~ 5.5V | ROHS3 Compliant | 3 (168 Hours) |
| ICL3243EIVZ | Renesas Electronics | 28-TSSOP (0.173", 4.40mm) | Tube | 250 kbps | -40°C ~ 85°C | 500 mV | 3V ~ 5.5V | ROHS3 Compliant | 3 (168 Hours) |
| ICL3243EIVZ-T | Renesas Electronics | 28-TSSOP (0.173", 4.40mm) | Cut Tape (CT) & Digi-Reel® | 250 kbps | -40°C ~ 85°C | 500 mV | 3V ~ 5.5V | ROHS3 Compliant | 3 (168 Hours) |
| ICL3243ECAZ | Renesas Electronics | 28-SSOP (0.209", 5.30mm) | Tube | 250 kbps | 0°C ~ 70°C | 500 mV | 3V ~ 5.5V | ROHS3 Compliant | 2 (1 Year) |
| ICL3243ECAZ-T | Renesas Electronics | 28-SSOP (0.209", 5.30mm) | Tape & Reel (TR) | 250 kbps | 0°C ~ 70°C | 500 mV | 3V ~ 5.5V | ROHS3 Compliant | 2 (1 Year) |
| ICL3243EIAZ | Renesas Electronics | 28-SSOP (0.209", 5.30mm) | Tube | 250 kbps | -40°C ~ 85°C | 500 mV | 3V ~ 5.5V | ROHS3 Compliant | 2 (1 Year) |
| ICL3243EIAZ-T | Renesas Electronics | 28-SSOP (0.209", 5.30mm) | Cut Tape (CT) & Digi-Reel® | 250 kbps | -40°C ~ 85°C | 500 mV | 3V ~ 5.5V | ROHS3 Compliant | 2 (1 Year) |
| MAX3243CUI+ | Analog Devices Inc./Maxim Integrated | 28-TSSOP (0.173", 4.40mm) | Tube | 120 kbps | 0°C ~ 70°C | 300 mV | 3V ~ 5.5V | ROHS3 Compliant | 1 (Unlimited) |
| MAX3243ECUI+ | Analog Devices Inc./Maxim Integrated | 28-TSSOP (0.173", 4.40mm) | Tube | 120 kbps | 0°C ~ 70°C | 300 mV | 3V ~ 5.5V | ROHS3 Compliant | 1 (Unlimited) |
Engineering Selection Recommendations
Direct Package-Compatible Substitutes (28-TSSOP):
The ICL3243EIVZ and ICL3243EIVZ-T from Renesas Electronics are the closest functional equivalents to the MAX3243MPWREP. Both maintain the 28-TSSOP package footprint, 250 kbps data rate, 500 mV receiver hysteresis, and 3V ~ 5.5V supply voltage. The ICL3243EIVZ-T in Cut Tape & Digi-Reel format provides the most direct substitution for production environments. Operating temperature range is -40°C ~ 85°C, which covers most industrial applications but does not extend to the full -55°C ~ 125°C range of the main part. MSL rating is 3 (168 Hours), requiring controlled storage conditions compared to the unlimited MSL of the main part.
The ICL3243ECVZ and ICL3243ECVZ-T also maintain 28-TSSOP compatibility with identical electrical specifications but operate within 0°C ~ 70°C, suitable for commercial temperature range applications only.
Alternative Package Substitutes (28-SSOP):
The ICL3243EIAZ-T and ICL3243ECAZ-T from Renesas Electronics provide equivalent electrical functionality in 28-SSOP packaging (0.209", 5.30mm width). These parts require PCB layout modification due to different pin pitch and package dimensions. The ICL3243EIAZ-T operates across -40°C ~ 85°C with MSL rating 2 (1 Year). The ICL3243ECAZ-T is limited to 0°C ~ 70°C with MSL rating 2 (1 Year).
Limited Compatibility Alternatives:
The MAX3243CUI+ and MAX3243ECUI+ from Analog Devices maintain the 28-TSSOP package but operate at reduced data rate (120 kbps versus 250 kbps) and lower receiver hysteresis (300 mV versus 500 mV). These parts are suitable only for applications with lower bandwidth requirements and are not recommended as direct substitutes for the MAX3243MPWREP in high-speed serial communication designs.
Compliance and Status:
All listed substitute parts maintain active production status and ROHS3 compliance. Selection should prioritize parts matching the application's operating temperature range and packaging format requirements.
Frequently Asked Questions (FAQ)
Q: Can ICL3243ECVZ replace MAX3243MPWREP in all applications?
A: The ICL3243ECVZ maintains identical package type (28-TSSOP), data rate (250 kbps), receiver hysteresis (500 mV), and supply voltage range (3V ~ 5.5V). However, its operating temperature range is limited to 0°C ~ 70°C compared to the main part's -55°C ~ 125°C. Use this substitute only in applications operating within the 0°C ~ 70°C range. MSL rating is 3 (168 Hours), requiring controlled storage.
Q: What is the difference between 28-TSSOP and 28-SSOP packages?
A: Both are 28-pin surface mount packages but differ in physical dimensions. The 28-TSSOP (thin shrink small outline package) measures 0.173" width with 4.40mm pitch, while 28-SSOP measures 0.209" width with 5.30mm pitch. Substituting between these packages requires PCB layout redesign and cannot be performed as a direct drop-in replacement.
Q: Why do some substitutes have lower data rates?
A: The MAX3243CUI+ and MAX3243ECUI+ operate at 120 kbps instead of 250 kbps. These parts are functionally different and suitable only for lower-speed serial communication applications. They are not recommended as substitutes for designs requiring 250 kbps operation.
Q: What does MSL rating mean for component selection?
A: MSL (Moisture Sensitivity Level) indicates how long a component can be stored in standard conditions before requiring baking. The main part has MSL 1 (Unlimited storage). Substitutes with MSL 2 or 3 require controlled storage and may need baking before reflow soldering if storage time exceeds specified limits. This affects supply chain and manufacturing processes.
Q: Are all substitute parts RoHS3 compliant?
A: Yes, all listed substitute parts maintain ROHS3 compliance, matching the main part's environmental and regulatory requirements.
Q: Which substitute offers the widest operating temperature range?
A: The ICL3243EIVZ and ICL3243EIVZ-T operate across -40°C ~ 85°C, the widest range among substitutes. However, this does not match the main part's -55°C ~ 125°C range. For applications requiring the full -55°C ~ 125°C range, the MAX3243MPWREP remains the only option among listed parts.
Q: Can I use ICL3243ECAZ-T as a direct replacement?
A: The ICL3243ECAZ-T provides equivalent electrical specifications but uses 28-SSOP packaging instead of 28-TSSOP. This requires PCB layout modification and cannot be used as a direct drop-in replacement. Operating temperature is limited to 0°C ~ 70°C.
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