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MAX3232EIDR Equivalent & Substitute Parts
Part Overview
The MAX3232EIDR is a full-duplex RS232 transceiver manufactured by Texas Instruments, designed for serial communication interfaces in embedded systems and industrial applications. This 2/2 transceiver (2 drivers, 2 receivers) operates across a 3V to 5.5V supply range with a 250kbps data rate and is housed in a 16-SOIC surface mount package. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits selection from qualified alternatives that maintain electrical and mechanical compatibility within the same functional category.
Substiute Parts
Key Parameters
| Parameter | MAX3232EIDR |
|---|---|
| Manufacturer | Texas Instruments |
| Type | Transceiver |
| Protocol | RS232 |
| Number of Drivers/Receivers | 2/2 |
| Duplex | Full |
| Receiver Hysteresis | 300 mV |
| Data Rate | 250kbps |
| Voltage - Supply | 3V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX3232EIDR is determined by strict adherence to the following parameters:
Critical Parameters (Must Match):
- Protocol: RS232
- Number of Drivers/Receivers: 2/2
- Duplex: Full
- Voltage Supply Range: 3V ~ 5.5V
- Mounting Type: Surface Mount
- Package / Case: 16-SOIC (0.154", 3.90mm Width)
- RoHS Status: ROHS3 Compliant
Compatible Variation Parameters (Within Tolerance):
- Receiver Hysteresis: 300 mV to 500 mV
- Data Rate: 235kbps to 460kbps (all exceed minimum 250kbps requirement)
- Operating Temperature: -40°C ~ 85°C (exact match preferred; 0°C ~ 70°C represents reduced range)
- MSL Rating: 1 or 3 (both acceptable for standard applications)
Substitute parts are grouped by manufacturer and packaging configuration while maintaining full electrical and mechanical compatibility within the RS232 2/2 transceiver category.
Parameter Comparison
| Part Number | Manufacturer | Receiver Hysteresis | Data Rate | Operating Temperature | Package / Case | Packaging Type | Inventory | Product Status |
|---|---|---|---|---|---|---|---|---|
| MAX3232EIDR | Texas Instruments | 300 mV | 250kbps | -40°C ~ 85°C | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 17,600 | Active |
| TRS3232EIDR | Texas Instruments | 300 mV | 250kbps | -40°C ~ 85°C | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 634,478 | Active |
| ADM3202ARNZ | Analog Devices Inc. | 400 mV | 460kbps | -40°C ~ 85°C | 16-SOIC (0.154", 3.90mm) | Tube | 4,121 | Active |
| ADM3202ARNZ-REEL | Analog Devices Inc. | 400 mV | 460kbps | -40°C ~ 85°C | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 44,100 | Active |
| ADM3202ARNZ-REEL7 | Analog Devices Inc. | 400 mV | 460kbps | -40°C ~ 85°C | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 27,977 | Active |
| ADM3202ARWZ | Analog Devices Inc. | 400 mV | 460kbps | -40°C ~ 85°C | 16-SOIC (0.295", 7.50mm) | Tube | 1,515 | Active |
| ADM3202ARWZ-REEL | Analog Devices Inc. | 400 mV | 460kbps | -40°C ~ 85°C | 16-SOIC (0.295", 7.50mm) | Cut Tape (CT) & Digi-Reel® | 1,700 | Active |
| ADM3202ARWZ-REEL7 | Analog Devices Inc. | 400 mV | 460kbps | -40°C ~ 85°C | 16-SOIC (0.295", 7.50mm) | Tape & Reel (TR) | 1,310 | Active |
| ADM3232EARNZ | UMW | 300 mV | 235kbps | -40°C ~ 85°C | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 5,648 | Active |
| ADM3232EARNZ-REEL7 | Analog Devices Inc. | 500 mV | 460kbps | -40°C ~ 85°C | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 15,300 | Active |
| ICL3232CBNZ | Renesas Electronics Corporation | 300 mV | 250kbps | 0°C ~ 70°C | 16-SOIC (0.154", 3.90mm) | Tube | 9,884 | Active |
Engineering Selection Recommendations
All listed substitute parts maintain active product status and ROHS3 compliance, confirming ongoing manufacturer support and environmental regulatory alignment with the MAX3232EIDR.
Primary Substitutes (Identical Package Dimensions): TRS3232EIDR from Texas Instruments offers parametric equivalence with identical receiver hysteresis (300 mV), data rate (250kbps), and operating temperature range (-40°C ~ 85°C). This part provides the highest inventory availability (634,478 units) and maintains the same 16-SOIC (0.154", 3.90mm) package footprint.
Secondary Substitutes (Enhanced Performance): ADM3202ARNZ-REEL and ADM3202ARNZ-REEL7 from Analog Devices Inc. provide increased data rate capability (460kbps) and higher receiver hysteresis (400 mV) while maintaining the identical 16-SOIC (0.154", 3.90mm) package and full operating temperature range. These parts are suitable for applications requiring higher communication speeds.
Alternative Substitutes (Package Dimension Variation): ADM3202ARWZ and ADM3202ARWZ-REEL feature a wider 16-SOIC package (0.295", 7.50mm) and are not recommended as direct substitutes without PCB layout verification, as they require different footprint spacing.
Temperature-Constrained Substitute: ICL3232CBNZ from Renesas Electronics Corporation operates within a reduced temperature range (0°C ~ 70°C) compared to the MAX3232EIDR (-40°C ~ 85°C). This part is suitable only for applications operating within the narrower temperature specification.
Frequently Asked Questions (FAQ)
Q: Can ADM3202ARWZ parts substitute for MAX3232EIDR in existing designs? A: ADM3202ARWZ variants feature a wider 16-SOIC package (0.295", 7.50mm) compared to MAX3232EIDR (0.154", 3.90mm). Direct substitution requires PCB layout modification and is not recommended without design review.
Q: What is the difference between ADM3202ARNZ and ADM3202ARNZ-REEL? A: Both parts are electrically identical. ADM3202ARNZ is supplied in Tube packaging, while ADM3202ARNZ-REEL is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on assembly process requirements and inventory management preferences.
Q: Is ICL3232CBNZ suitable for industrial applications requiring -40°C operation? A: No. ICL3232CBNZ operates within 0°C ~ 70°C, which does not meet the -40°C minimum requirement of the MAX3232EIDR. This part is suitable only for commercial temperature range applications.
Q: Do all substitute parts maintain ROHS3 compliance? A: Yes. All listed substitute parts carry ROHS3 Compliant status, ensuring regulatory alignment with the MAX3232EIDR for environmental and hazardous substance restrictions.
Q: What is the significance of receiver hysteresis variation between 300 mV and 500 mV? A: Receiver hysteresis determines the voltage differential required for input signal transitions. All listed parts (300 mV to 500 mV) operate within acceptable RS232 specification tolerances and are functionally compatible for standard serial communication applications.
Q: Can TRS3232EIDR be used as a direct replacement for MAX3232EIDR? A: Yes. TRS3232EIDR is parametrically equivalent with identical electrical specifications, operating temperature range, and 16-SOIC (0.154", 3.90mm) package dimensions. It is a direct substitute suitable for immediate PCB replacement.
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