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ICL3226IAZ RS232 Transceiver Equivalent & Substitute Parts
Part Overview
The ICL3226IAZ is a full-duplex RS232 transceiver manufactured by Renesas Electronics Corporation, designed for serial communication applications requiring 1/1 driver/receiver configuration. This interface IC operates across a 3V to 5.5V supply range with a 250kbps data rate and is housed in a 16-SSOP surface mount package. The part maintains active product status with ROHS3 compliance and is currently in stock with 926 units available.
Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and functional equivalence within the RS232 transceiver category. Selection of alternative parts becomes necessary when the primary part reaches end-of-life status, inventory constraints occur, or when design flexibility permits component optimization.
Substiute Parts
Key Parameters
| Parameter | ICL3226IAZ Specification |
|---|---|
| Manufacturer | Renesas Electronics Corporation |
| Protocol | RS232 |
| Number of Drivers/Receivers | 1/1 |
| Duplex Mode | Full |
| Data Rate | 250kbps |
| Voltage Supply Range | 3V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Receiver Hysteresis | 500 mV |
| Package Type | 16-SSOP (0.209", 5.30mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 2 (1 Year) |
Substitute Part Grouping Explanation
Substitution relationships for the ICL3226IAZ are established through strict parametric matching across the following critical criteria:
Primary Equivalence Criteria:
- RS232 protocol with 1/1 driver/receiver configuration
- Full-duplex operation mode
- 16-SSOP package footprint (0.209", 5.30mm Width)
- Surface mount technology
- 3V to 5.5V supply voltage compatibility
- 500 mV receiver hysteresis
- ROHS3 compliance
Secondary Compatibility Factors:
- Data rate capability (minimum 250kbps required)
- Operating temperature range (must encompass or match -40°C to 85°C)
- Moisture sensitivity level and storage conditions
- Product status and availability
Parts are classified into three substitution categories:
Parametric Equivalent: ICL3221EIAZ matches all primary criteria with identical electrical specifications and package geometry, differing only in MSL rating (3 vs. 2) and manufacturer base product number.
Direct Manufacturer Equivalents: SN65C3221EDB and SN65C3221EDBR from Texas Instruments provide full functional equivalence with enhanced data rate capability (1Mbps) and superior MSL rating (1), with packaging variations (Tube vs. Cut Tape/Digi-Reel).
Similar Functional Equivalents: MAX3226 series parts from Analog Devices Inc./Maxim Integrated maintain identical electrical specifications and package compatibility with variations in operating temperature range, packaging format, and MSL ratings.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Data Rate | Supply Voltage | Operating Temp | Package | Packaging Format | Product Status | Inventory |
|---|---|---|---|---|---|---|---|---|---|---|
| ICL3226IAZ | Renesas | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | -40°C ~ 85°C | 16-SSOP | Tube | Active | 926 |
| ICL3221EIAZ | Renesas | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | -40°C ~ 85°C | 16-SSOP | Tube | Active | 3410 |
| SN65C3221EDB | Texas Instruments | RS232 | 1/1 | 1Mbps | 3V ~ 5.5V | -40°C ~ 85°C | 16-SSOP | Tube | Last Time Buy | 1038 |
| SN65C3221EDBR | Texas Instruments | RS232 | 1/1 | 1Mbps | 3V ~ 5.5V | -40°C ~ 85°C | 16-SSOP | Cut Tape/Digi-Reel | Active | 3826 |
| MAX3226CAE+ | Analog Devices/Maxim | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 16-SSOP | Tube | Active | 1389 |
| MAX3226CAE+T | Analog Devices/Maxim | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 16-SSOP | Cut Tape/Digi-Reel | Active | 5351 |
| MAX3226EAAE+ | Analog Devices/Maxim | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | -40°C ~ 125°C | 16-SSOP | Tube | Active | 1555 |
| MAX3226EAAE+T | Analog Devices/Maxim | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | -40°C ~ 125°C | 16-SSOP | Tape & Reel | Active | 3034 |
| MAX3226EAE+T | Analog Devices/Maxim | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | -40°C ~ 85°C | 16-SSOP | Cut Tape/Digi-Reel | Active | 7900 |
| MAX3226ECAE+ | Analog Devices/Maxim | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 16-SSOP | Tube | Active | 3414 |
| MAX3226ECAE+T | Analog Devices/Maxim | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 16-SSOP | Cut Tape/Digi-Reel | Active | 4900 |
Engineering Selection Recommendations
Highest Compatibility: ICL3221EIAZ from Renesas provides parametric equivalence with identical electrical specifications and package compatibility. This part is recommended as the primary substitute when maintaining consistency with the original manufacturer is preferred. Higher inventory availability (3410 units) supports supply chain continuity.
Enhanced Performance Option: SN65C3221EDBR from Texas Instruments offers superior data rate capability (1Mbps vs. 250kbps) with active product status and the highest inventory level (3826 units). The MSL rating of 1 (Unlimited) provides superior moisture protection compared to the original part's MSL 2 rating. This part is suitable for applications where higher data rates provide design margin without additional cost impact.
Extended Temperature Range: MAX3226EAAE+ and MAX3226EAAE+T from Analog Devices/Maxim Integrated extend the operating temperature range to -40°C to 125°C, accommodating industrial and automotive applications requiring enhanced thermal performance. These parts maintain full electrical equivalence with the original specification.
Standard Temperature Range: MAX3226EAE+T matches the original operating temperature range (-40°C to 85°C) with active product status and the highest inventory availability (7900 units) among the MAX3226 variants. This part is suitable for direct replacement in applications with standard temperature requirements.
Packaging Considerations: All substitute parts maintain the 16-SSOP package footprint. Selection between Tube, Cut Tape/Digi-Reel, and Tape & Reel packaging formats depends on assembly process requirements and procurement volume. Cut Tape/Digi-Reel formats (MAX3226CAE+T, MAX3226EAE+T, MAX3226ECAE+T, SN65C3221EDBR) support automated pick-and-place assembly.
Product Status: All recommended substitutes maintain active product status except SN65C3221EDB, which carries Last Time Buy status. For long-term supply assurance, prioritize parts with active status.
Frequently Asked Questions (FAQ)
Q: Can ICL3221EIAZ directly replace ICL3226IAZ in existing designs?
A: Yes. ICL3221EIAZ provides parametric equivalence with identical RS232 protocol, 1/1 driver/receiver configuration, 250kbps data rate, 3V to 5.5V supply range, -40°C to 85°C operating temperature, and 16-SSOP package. The only difference is MSL rating (3 vs. 2), which does not affect functional performance in standard applications.
Q: What is the advantage of SN65C3221EDBR over the original ICL3226IAZ?
A: SN65C3221EDBR provides 1Mbps data rate capability compared to 250kbps, offering 4x performance margin. MSL rating of 1 (Unlimited) provides superior moisture protection. Active product status ensures long-term availability. The part maintains identical supply voltage, operating temperature, and 16-SSOP package compatibility.
Q: Are MAX3226 series parts compatible with ICL3226IAZ?
A: MAX3226 series parts are functionally compatible with identical RS232 protocol, 1/1 driver/receiver configuration, 250kbps data rate, 3V to 5.5V supply range, and 16-SSOP package. Operating temperature ranges vary by variant. All MAX3226 parts carry active product status and superior MSL ratings (1 vs. 2).
Q: Which substitute part has the best inventory availability?
A: MAX3226EAE+T offers the highest inventory level at 7900 units. This part matches the original operating temperature range (-40°C to 85°C) and is available in Cut Tape/Digi-Reel format suitable for automated assembly.
Q: Can I use a substitute part with a different operating temperature range?
A: Operating temperature range substitution is permissible only when the substitute range encompasses the application's actual operating conditions. MAX3226CAE+ and MAX3226ECAE+ operate at 0°C to 70°C, which is narrower than the original -40°C to 85°C range. MAX3226EAAE+ extends to -40°C to 125°C, providing broader coverage. Verify application requirements before selection.
Q: What packaging format should I select for automated assembly?
A: Cut Tape/Digi-Reel and Tape & Reel formats support automated pick-and-place assembly. Available options include SN65C3221EDBR, MAX3226CAE+T, MAX3226EAAE+T, MAX3226EAE+T, and MAX3226ECAE+T. Tube packaging (ICL3226IAZ, ICL3221EIAZ, SN65C3221EDB, MAX3226CAE+, MAX3226EAAE+, MAX3226ECAE+) requires manual handling or reel conversion.
Q: Is RoHS3 compliance maintained across all substitute parts?
A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original ICL3226IAZ certification status. REACH status is unaffected across all parts.
Q: What is the difference between MAX3226EAAE+ and MAX3226EAE+T?
A: Both parts are functionally equivalent with identical electrical specifications. MAX3226EAAE+ operates at -40°C to 125°C (extended range) in Tube packaging. MAX3226EAE+T operates at -40°C to 85°C (standard range) in Cut Tape/Digi-Reel format. Selection depends on temperature requirements and assembly process compatibility.
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