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MAX232EIDRG4 Equivalent & Substitute Parts
Part Overview
The MAX232EIDRG4 is a full-duplex RS232 interface transceiver manufactured by Texas Instruments, configured with 2 drivers and 2 receivers in a 16-SOIC surface mount package. This component is discontinued at DiGi Electronics and no longer in active production. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications requiring RS232 serial communication interfaces.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MAX232EIDRG4 |
| Manufacturer | Texas Instruments |
| Category | Interface |
| Type | Transceiver |
| Protocol | RS232 |
| Number of Drivers/Receivers | 2/2 |
| Duplex | Full |
| Receiver Hysteresis | 500 mV |
| Data Rate | 250 kbps |
| Voltage - Supply | 4.5V ~ 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) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution of the MAX232EIDRG4 is determined by strict equivalence across the following critical parameters:
Primary Substitution Criteria:
- Protocol: RS232
- Number of Drivers/Receivers: 2/2 configuration
- Duplex: Full-duplex operation
- Mounting Type: Surface Mount
- Package / Case: 16-SOIC form factor
- Voltage Supply Range: 4.5V ~ 5.5V
- Operating Temperature Range: -40°C ~ 85°C minimum
- RoHS3 Compliance
- MSL Rating: 1 (Unlimited)
Secondary Compatibility Parameters:
- Data Rate: 250 kbps or higher
- Receiver Hysteresis: 500 mV or compatible threshold
Substitute parts are grouped into three categories based on their relationship to the main part:
Parametric Equivalents: Parts with identical electrical specifications and packaging, differing only in packaging format (Tape & Reel vs. Cut Tape).
Direct Manufacturers: Parts from Analog Devices Inc./Maxim Integrated with the same base product number (MAX232) but different packaging or minor specification variations.
MFR Recommended Alternatives: Parts from alternative manufacturers (UMW, Analog Devices, Renesas) that meet all critical electrical and mechanical parameters while offering active product status and improved supply availability.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Data Rate | Receiver Hysteresis | Supply Voltage | Operating Temp | Package | Product Status | Packaging Format |
|---|---|---|---|---|---|---|---|---|---|---|
| MAX232EIDRG4 | Texas Instruments | RS232 | 2/2 | 250 kbps | 500 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.154") | Discontinued | Tape & Reel (TR) |
| MAX232EIDR | Texas Instruments | RS232 | 2/2 | 250 kbps | 500 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.154") | Active | Cut Tape (CT) & Digi-Reel® |
| TRS232EIDR | Texas Instruments | RS232 | 2/2 | 250 kbps | 500 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.154") | Obsolete | Cut Tape (CT) & Digi-Reel® |
| MAX232EESE+ | Analog Devices Inc./Maxim Integrated | RS232 | 2/2 | 120 kbps | 500 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.154") | Active | Tube |
| MAX232EESE+T | Analog Devices Inc./Maxim Integrated | RS232 | 2/2 | 120 kbps | 500 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.154") | Active | Cut Tape (CT) & Digi-Reel® |
| ADM232AARNZ | UMW | RS232 | 2/2 | 120 kbps | Not specified | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOP | Active | Cut Tape (CT) & Digi-Reel® |
| ADM232AARNZ-REEL | Analog Devices Inc. | RS232 | 2/2 | 200 kbps | 400 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.154") | Active | Cut Tape (CT) & Digi-Reel® |
| ADM232AARNZ-REEL7 | Analog Devices Inc. | RS232 | 2/2 | 200 kbps | 400 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.154") | Active | Cut Tape (CT) & Digi-Reel® |
| ADM232LARZ | Analog Devices Inc. | RS232 | 2/2 | 120 kbps | 650 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.295") | Active | Tube |
| ADM232LARZ-REEL | Analog Devices Inc. | RS232 | 2/2 | 120 kbps | 650 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC (0.295") | Active | Cut Tape (CT) & Digi-Reel® |
| HIN232ACBNZ | Renesas Electronics Corporation | RS232 | 2/2 | 230 kbps | 500 mV | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC (0.154") | Active | Tube |
Engineering Selection Recommendations
Tier 1 - Direct Parametric Equivalents (Recommended Primary Substitutes):
MAX232EIDR is the optimal substitute for MAX232EIDRG4. This part maintains identical electrical specifications (250 kbps data rate, 500 mV receiver hysteresis, -40°C to 85°C operating range) and package form factor (16-SOIC 0.154" width). The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Product status is Active, ensuring long-term availability. RoHS3 compliance and MSL 1 rating are maintained.
Tier 2 - Active Manufacturer Alternatives (Secondary Substitutes):
MAX232EESE+T (Analog Devices Inc./Maxim Integrated) is an active product with identical 2/2 transceiver configuration, 16-SOIC package, and full operating temperature range. Data rate is reduced to 120 kbps, which is acceptable for applications not requiring the full 250 kbps bandwidth. This part offers superior supply availability with 30,400 units in stock.
ADM232AARNZ-REEL and ADM232AARNZ-REEL7 (Analog Devices Inc.) provide 200 kbps data rate with 400 mV receiver hysteresis, meeting or exceeding minimum performance requirements. Both maintain the 16-SOIC 0.154" package and full temperature range. These parts are actively produced with strong inventory levels.
Tier 3 - Conditional Substitutes (Application-Dependent):
HIN232ACBNZ (Renesas Electronics Corporation) offers 230 kbps data rate and 500 mV receiver hysteresis in the 16-SOIC 0.154" package. Operating temperature range is restricted to 0°C ~ 70°C, making this part unsuitable for applications requiring the full -40°C ~ 85°C range of the original part.
ADM232LARZ and ADM232LARZ-REEL (Analog Devices Inc.) feature a wider 16-SOIC package (0.295" width) and 650 mV receiver hysteresis. These parts are suitable only for designs with PCB layout accommodating the larger package footprint.
Not Recommended:
TRS232EIDR is obsolete and should not be selected for new designs despite parametric equivalence.
ADM232AARNZ (UMW) uses a 16-SOP package variant that differs from the standard 16-SOIC form factor, requiring PCB redesign.
Frequently Asked Questions (FAQ)
Q: Can MAX232EIDR directly replace MAX232EIDRG4 without circuit modification?
A: Yes. MAX232EIDR is a parametric equivalent with identical electrical specifications and 16-SOIC package dimensions. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). No circuit or PCB layout changes are required. Both parts are RoHS3 compliant with MSL 1 rating.
Q: What is the difference between MAX232EESE+ and MAX232EESE+T?
A: Both parts are identical in electrical specifications and package. MAX232EESE+ is supplied in Tube packaging, while MAX232EESE+T is supplied in Cut Tape & Digi-Reel® format. Selection depends on assembly process requirements and inventory management preferences.
Q: Why is the data rate lower on MAX232EESE+ and ADM232LARZ compared to MAX232EIDRG4?
A: These parts are from different product lines within the MAX232 family. The 120 kbps data rate is sufficient for standard RS232 serial communication applications. The original MAX232EIDRG4 specification of 250 kbps supports higher-speed serial protocols. Application requirements determine whether the reduced data rate is acceptable.
Q: Can ADM232AARNZ-REEL be used in place of MAX232EIDRG4?
A: Yes, with the following considerations: ADM232AARNZ-REEL operates at 200 kbps (lower than the original 250 kbps) and features 400 mV receiver hysteresis (lower than the original 500 mV). Both parameters remain within acceptable ranges for RS232 interface applications. The 16-SOIC 0.154" package is identical. This part is actively produced with strong inventory availability.
Q: Is HIN232ACBNZ suitable for industrial temperature range applications?
A: No. HIN232ACBNZ operates over 0°C ~ 70°C, which does not meet the -40°C ~ 85°C requirement of the original MAX232EIDRG4. This part is restricted to commercial temperature range applications only.
Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?
A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. Both the original MAX232EIDRG4 and all recommended substitutes carry this rating, eliminating moisture-related reliability concerns.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed meet RoHS3 compliance requirements. REACH status is either Unaffected or not specified, indicating no regulatory restrictions on use in regulated markets.
Q: What is the difference between 16-SOIC (0.154") and 16-SOIC (0.295") packages?
A: The measurement refers to package width. The 0.154" width is the standard narrow SOIC package used in MAX232EIDRG4. The 0.295" width is a wider variant used in ADM232LARZ series. These are not interchangeable without PCB layout modification. Verify package footprint compatibility before substitution.
Q: Can multiple substitute parts be used interchangeably in production?
A: Yes, provided all parts meet the application's electrical and thermal requirements. MAX232EIDR, MAX232EESE+T, ADM232AARNZ-REEL, and ADM232AARNZ-REEL7 are all suitable for standard RS232 applications. However, design validation should confirm that reduced data rates (120-200 kbps) and receiver hysteresis variations (400-500 mV) do not impact system performance.
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