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MAX3232IDRG4 Equivalent & Substitute Parts
Part Overview
The MAX3232IDRG4 is a 2/2 transceiver full RS232 interface IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for new designs and production continuity. The part operates across a 3V to 5.5V supply voltage range with a 250kbps data rate and full duplex capability, making it suitable for legacy RS232 communication applications requiring dual driver and receiver channels.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MAX3232IDRG4 |
| 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 |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the MAX3232IDRG4 is determined by strict equivalence across the following critical parameters:
- RS232 protocol compliance with 2/2 driver/receiver configuration
- Full duplex operation capability
- Supply voltage range of 3V to 5.5V
- Operating temperature range of -40°C to 85°C
- Surface mount 16-SOIC package with 0.154" (3.90mm) width
- ROHS3 compliance and MSL 1 rating
Substitute parts are grouped into two categories: MFR Recommended parts from Texas Instruments and Analog Devices Inc. that maintain identical electrical specifications, and parametric equivalents that meet functional requirements with minor variations in receiver hysteresis or data rate while maintaining full compatibility with the original application requirements.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Receiver Hysteresis | Data Rate | Package / Case | Packaging Type | Inventory |
|---|---|---|---|---|---|---|---|
| MAX3232IDRG4 | Texas Instruments | Obsolete | 300 mV | 250kbps | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 1,398 Pcs |
| MAX3232EIDR | Texas Instruments | Active | 300 mV | 250kbps | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 17,600 Pcs |
| TRS3232EIDR | Texas Instruments | Active | 300 mV | 250kbps | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 634,478 Pcs |
| ADM3202ARNZ | Analog Devices Inc. | Active | 400 mV | 460Kbps | 16-SOIC (0.154", 3.90mm) | Tube | 4,121 Pcs |
| ADM3202ARNZ-REEL | Analog Devices Inc. | Active | 400 mV | 460Kbps | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 44,100 Pcs |
| ADM3202ARNZ-REEL7 | Analog Devices Inc. | Active | 400 mV | 460Kbps | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 27,977 Pcs |
| ADM3202ARWZ | Analog Devices Inc. | Active | 400 mV | 460Kbps | 16-SOIC (0.295", 7.50mm) | Tube | 1,515 Pcs |
| ADM3202ARWZ-REEL | Analog Devices Inc. | Active | 400 mV | 460Kbps | 16-SOIC (0.295", 7.50mm) | Cut Tape (CT) & Digi-Reel® | 1,700 Pcs |
| ADM3202ARWZ-REEL7 | Analog Devices Inc. | Active | 400 mV | 460Kbps | 16-SOIC (0.295", 7.50mm) | Tape & Reel (TR) | 1,310 Pcs |
| ADM3232EARNZ | UMW | Active | 300 mV | 235Kbps | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 5,648 Pcs |
| ADM3232EARNZ-REEL7 | Analog Devices Inc. | Active | 500 mV | 460Kbps | 16-SOIC (0.154", 3.90mm) | Cut Tape (CT) & Digi-Reel® | 15,300 Pcs |
Engineering Selection Recommendations
For direct replacement of the obsolete MAX3232IDRG4, the MAX3232EIDR from Texas Instruments is the primary recommended substitute. This part maintains identical electrical specifications including 300 mV receiver hysteresis and 250kbps data rate, operates within the same supply voltage and temperature ranges, and is packaged in the identical 16-SOIC (0.154", 3.90mm) configuration. The MAX3232EIDR is currently in active production status with substantial inventory availability.
The TRS3232EIDR represents an alternative Texas Instruments option with equivalent specifications and significantly higher inventory levels, suitable for applications where supply chain continuity is a priority.
For applications where enhanced data rate performance is acceptable, the ADM3202 series from Analog Devices Inc. provides active alternatives with improved 460Kbps data rate capability and higher receiver hysteresis (400 mV). The ADM3202ARNZ-REEL variant offers the best balance of availability and packaging consistency with the original part, maintaining the standard 0.154" (3.90mm) SOIC width.
The ADM3202ARWZ variants feature a wider 16-SOIC package (0.295", 7.50mm width) and are suitable only for applications where PCB layout accommodates the increased package width.
All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and full duplex RS232 operation across the -40°C to 85°C temperature range.
Frequently Asked Questions (FAQ)
Q: Can the MAX3232EIDR be used as a direct drop-in replacement for the MAX3232IDRG4?
A: Yes. The MAX3232EIDR maintains identical electrical specifications, supply voltage range, operating temperature range, and 16-SOIC (0.154", 3.90mm) package configuration. No circuit modifications are required.
Q: What is the difference between the ADM3202ARNZ and ADM3202ARWZ variants?
A: The primary difference is package width. The ADM3202ARNZ uses a standard 16-SOIC package with 0.154" (3.90mm) width, matching the original MAX3232IDRG4 footprint. The ADM3202ARWZ uses a wider 16-SOIC package with 0.295" (7.50mm) width and requires PCB layout verification before substitution.
Q: Are there performance differences between the MAX3232EIDR and ADM3202ARNZ-REEL?
A: Both parts meet RS232 protocol requirements with 2/2 driver/receiver configuration and full duplex operation. The ADM3202ARNZ-REEL offers higher data rate capability (460Kbps versus 250kbps) and increased receiver hysteresis (400 mV versus 300 mV). These differences do not affect compatibility in applications designed for the original 250kbps specification.
Q: What packaging options are available for the recommended substitutes?
A: Texas Instruments MAX3232EIDR and TRS3232EIDR are supplied in Cut Tape (CT) & Digi-Reel® packaging. Analog Devices ADM3202 variants are available in Tube, Cut Tape (CT) & Digi-Reel®, and Tape & Reel (TR) packaging options. Packaging selection does not affect electrical performance.
Q: Is the UMW ADM3232EARNZ suitable as a substitute?
A: The ADM3232EARNZ maintains the 300 mV receiver hysteresis and operates within the required supply voltage and temperature ranges. The 235Kbps data rate is slightly lower than the original 250kbps specification but remains compatible with legacy RS232 applications. Package configuration matches the original 16-SOIC (0.154", 3.90mm) standard.
Q: Do all substitute parts maintain the same compliance certifications?
A: Yes. All recommended substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original MAX3232IDRG4 certifications.
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