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MAX3232ID RS232 Transceiver - Equivalent & Substitute Parts
Part Overview
The MAX3232ID is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 16-SOIC package. This component interfaces between RS232 serial communication lines and digital logic circuits, supporting data rates up to 250 kbps across supply voltages of 3V to 5.5V. The MAX3232ID is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute components must maintain electrical compatibility across protocol, driver/receiver configuration, duplex mode, and package specifications while meeting current product availability and compliance standards.
Substiute Parts
Key Parameters
| Parameter | MAX3232ID Specification |
|---|---|
| Manufacturer | Texas Instruments |
| Type | Transceiver |
| Protocol | RS232 |
| Number of Drivers/Receivers | 2/2 |
| Duplex Mode | Full |
| Data Rate | 250 kbps |
| Receiver Hysteresis | 300 mV |
| Voltage Supply Range | 3V to 5.5V |
| Operating Temperature | -40°C to 85°C |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX3232ID is determined by strict adherence to the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Protocol: RS232
- Number of Drivers/Receivers: 2/2
- Duplex Mode: Full
- Voltage Supply Range: 3V to 5.5V
- Package / Case: 16-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- RoHS Status: ROHS3 Compliant
Secondary Compatibility Parameters:
- Data Rate: Minimum 250 kbps (higher rates are acceptable)
- Receiver Hysteresis: 300 mV or higher (higher values acceptable)
- Operating Temperature: Must include -40°C to 85°C range
- Moisture Sensitivity Level: 1 or 3 (both acceptable for MSL classification)
Substitute parts are grouped by manufacturer and product status. Active products from established manufacturers (Texas Instruments, Analog Devices Inc., Renesas Electronics Corporation) are prioritized. Parts with identical package dimensions and electrical specifications are direct substitutes. Parts with enhanced specifications (higher data rates, increased hysteresis) remain compatible as they exceed minimum requirements.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Data Rate | Receiver Hysteresis | Supply Voltage | Operating Temp | Package | Product Status | RoHS |
|---|---|---|---|---|---|---|---|---|---|---|
| MAX3232ID | Texas Instruments | RS232 | 2/2 | 250 kbps | 300 mV | 3V - 5.5V | -40°C to 85°C | 16-SOIC (0.154") | Obsolete | ROHS3 |
| MAX3232EIDR | Texas Instruments | RS232 | 2/2 | 250 kbps | 300 mV | 3V - 5.5V | -40°C to 85°C | 16-SOIC (0.154") | Active | ROHS3 |
| ADM3202ARNZ | Analog Devices Inc. | RS232 | 2/2 | 460 kbps | 400 mV | 3V - 5.5V | -40°C to 85°C | 16-SOIC (0.154") | Active | ROHS3 |
| ADM3202ARNZ-REEL | Analog Devices Inc. | RS232 | 2/2 | 460 kbps | 400 mV | 3V - 5.5V | -40°C to 85°C | 16-SOIC (0.154") | Active | ROHS3 |
| ADM3202ARNZ-REEL7 | Analog Devices Inc. | RS232 | 2/2 | 460 kbps | 400 mV | 3V - 5.5V | -40°C to 85°C | 16-SOIC (0.154") | Active | ROHS3 |
| ADM3202ARWZ | Analog Devices Inc. | RS232 | 2/2 | 460 kbps | 400 mV | 3V - 5.5V | -40°C to 85°C | 16-SOIC (0.295") | Active | ROHS3 |
| ADM3202ARWZ-REEL | Analog Devices Inc. | RS232 | 2/2 | 460 kbps | 400 mV | 3V - 5.5V | -40°C to 85°C | 16-SOIC (0.295") | Active | ROHS3 |
| ADM3202ARWZ-REEL7 | Analog Devices Inc. | RS232 | 2/2 | 460 kbps | 400 mV | 3V - 5.5V | -40°C to 85°C | 16-SOIC (0.295") | Active | ROHS3 |
| ADM3232EARNZ | UMW | RS232 | 2/2 | 235 kbps | 300 mV | 3V - 5.5V | -40°C to 85°C | 16-SOIC (0.154") | Active | ROHS3 |
| ADM3232EARNZ-REEL7 | Analog Devices Inc. | RS232 | 2/2 | 460 kbps | 500 mV | 3V - 5.5V | -40°C to 85°C | 16-SOIC (0.154") | Active | ROHS3 |
| ICL3232CBNZ | Renesas Electronics Corporation | RS232 | 2/2 | 250 kbps | 300 mV | 3V - 5.5V | 0°C to 70°C | 16-SOIC (0.154") | Active | ROHS3 |
Engineering Selection Recommendations
Primary Recommendation: MAX3232EIDR
The MAX3232EIDR from Texas Instruments is the direct active equivalent to the obsolete MAX3232ID. It maintains identical electrical specifications (250 kbps data rate, 300 mV receiver hysteresis, 3V to 5.5V supply) and package dimensions (16-SOIC 0.154" width). Product status is active with full ROHS3 compliance and MSL 1 rating. This part requires no design modifications and provides the highest compatibility assurance.
Secondary Recommendations: ADM3202 Series (Analog Devices Inc.)
The ADM3202ARNZ, ADM3202ARNZ-REEL, and ADM3202ARNZ-REEL7 variants are functionally compatible substitutes with enhanced specifications. These parts operate at 460 kbps (versus 250 kbps) and feature 400 mV receiver hysteresis (versus 300 mV), both exceeding MAX3232ID requirements. All variants maintain 16-SOIC (0.154" width) packaging, 3V to 5.5V supply range, -40°C to 85°C operating temperature, and ROHS3 compliance. Product status is active with established inventory availability. Packaging variants (Tube, Cut Tape & Digi-Reel, Tape & Reel) accommodate different procurement workflows.
Alternative Consideration: ADM3232EARNZ-REEL7
The ADM3232EARNZ-REEL7 from Analog Devices Inc. provides enhanced performance with 460 kbps data rate and 500 mV receiver hysteresis. It maintains identical package dimensions and electrical supply specifications. This part is suitable for applications requiring improved noise immunity through increased hysteresis margin.
Package Dimension Consideration: ADM3202ARWZ Series
The ADM3202ARWZ, ADM3202ARWZ-REEL, and ADM3202ARWZ-REEL7 variants feature a wider 16-SOIC package (0.295" width) compared to the MAX3232ID (0.154" width). These parts are electrically compatible but require PCB layout verification to confirm physical fit within existing footprints. Use only if board space accommodates the larger package envelope.
Temperature Range Limitation: ICL3232CBNZ
The ICL3232CBNZ from Renesas Electronics Corporation matches electrical specifications (250 kbps, 300 mV hysteresis) and package dimensions (16-SOIC 0.154" width) but operates across 0°C to 70°C temperature range. This part is suitable only for applications not requiring the full -40°C to 85°C operating range of the MAX3232ID.
Lower Data Rate Alternative: ADM3232EARNZ
The ADM3232EARNZ from UMW operates at 235 kbps, slightly below the MAX3232ID specification of 250 kbps. This part maintains 300 mV receiver hysteresis and 16-SOIC (0.154" width) packaging. Use only if application data rates do not exceed 235 kbps.
Frequently Asked Questions (FAQ)
Q: Can MAX3232EIDR directly replace MAX3232ID without PCB modifications?
A: Yes. The MAX3232EIDR is the active equivalent with identical electrical specifications and package dimensions. No design changes are required.
Q: Are ADM3202 series parts compatible with MAX3232ID applications?
A: Yes. ADM3202 parts maintain the same 2/2 full-duplex RS232 configuration, 16-SOIC (0.154" width) package, 3V to 5.5V supply range, and -40°C to 85°C operating temperature. Enhanced specifications (460 kbps data rate, 400 mV hysteresis) exceed MAX3232ID requirements and remain compatible.
Q: What is the difference between ADM3202ARNZ and ADM3202ARNZ-REEL packaging?
A: Both parts are electrically identical. Packaging differences relate to delivery format: Tube packaging for manual handling, and Cut Tape & Digi-Reel for automated assembly. Select based on procurement and manufacturing process requirements.
Q: Why do ADM3202ARWZ variants have a different package width?
A: The ADM3202ARWZ series uses a 16-SOIC package with 0.295" width, compared to 0.154" width in the MAX3232ID and other substitutes. Verify PCB footprint compatibility before selection. This wider package may not fit existing board layouts designed for the narrower MAX3232ID.
Q: Is ICL3232CBNZ suitable for all MAX3232ID applications?
A: ICL3232CBNZ is electrically compatible but operates across 0°C to 70°C temperature range. Use only if your application does not require operation below 0°C or above 70°C. The MAX3232ID supports -40°C to 85°C.
Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?
A: MSL 1 indicates the component has unlimited shelf life without moisture bake-out requirements. Both MAX3232ID and most substitutes carry MSL 1 rating, simplifying storage and handling procedures.
Q: Can I use ADM3232EARNZ if my application requires 250 kbps data rate?
A: ADM3232EARNZ operates at 235 kbps maximum, below the 250 kbps requirement. Use only if your actual data rate does not exceed 235 kbps. For applications requiring 250 kbps or higher, select MAX3232EIDR, ADM3202 series, or ADM3232EARNZ-REEL7.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the MAX3232ID specification.
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