Request Quote
(Ships tomorrow)
MAX232ID RS232 Transceiver Equivalent & Substitute Parts
Part Overview
The MAX232ID is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This interface IC operates across a 4.5V to 5.5V supply range with a 120 Kbps data rate and supports operating temperatures from -40°C to 85°C. The MAX232ID is classified as Last Time Buy, indicating end-of-life status. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for applications requiring RS232 serial communication.
Substiute Parts
Key Parameters
| Parameter | MAX232ID |
|---|---|
| Manufacturer | Texas Instruments |
| Type | Transceiver |
| Protocol | RS232 |
| Number of Drivers/Receivers | 2/2 |
| Duplex | Full |
| Receiver Hysteresis | 500 mV |
| Data Rate | 120 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 MAX232ID is determined by strict equivalence across the following critical parameters:
- Protocol: RS232
- Number of Drivers/Receivers: 2/2
- Duplex: Full
- Voltage Supply Range: 4.5V ~ 5.5V
- Data Rate: 120 Kbps minimum
- Operating Temperature Range: -40°C ~ 85°C
- Package Type: 16-SOIC or compatible 16-pin surface mount packages
- RoHS3 Compliance and MSL Level 1
Substitute parts are grouped into three categories:
- MFR Recommended Equivalents: Parts with identical electrical specifications and active product status (MAX232IDR, ADM202JRNZ variants, ADM232AARNZ-REEL)
- Parametric Equivalents: Parts meeting all electrical parameters but with obsolete status (MAX202ID, TRS202EID)
- Direct Equivalents: Parts with matching specifications and alternative packaging or manufacturers (MAX232ESE+T, ST232BDR, ADM232AARNZ)
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Data Rate | Supply Voltage | Operating Temp | Package | Product Status | RoHS3 |
|---|---|---|---|---|---|---|---|---|---|
| MAX232ID | Texas Instruments | RS232 | 2/2 | 120 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Last Time Buy | Yes |
| MAX232IDR | Texas Instruments | RS232 | 2/2 | 120 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | Yes |
| MAX202ID | Texas Instruments | RS232 | 2/2 | 120 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Obsolete | Yes |
| TRS202EID | Texas Instruments | RS232 | 2/2 | 120 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Obsolete | Yes |
| MAX232ESE+T | Analog Devices Inc./Maxim Integrated | RS232 | 2/2 | 120 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | Yes |
| ST232BDR | UMW | RS232 | 2/2 | 120 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOP | Active | Yes |
| ADM202JRNZ | Analog Devices Inc. | RS232 | 2/2 | Not specified | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC | Active | Yes |
| ADM202JRNZ-REEL | Analog Devices Inc. | RS232 | 2/2 | Not specified | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC | Active | Yes |
| ADM202JRNZ-REEL7 | Analog Devices Inc. | RS232 | 2/2 | Not specified | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC | Active | Yes |
| ADM232AARNZ | UMW | RS232 | 2/2 | 120 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOP | Active | Yes |
| ADM232AARNZ-REEL | Analog Devices Inc. | RS232 | 2/2 | 200 Kbps | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | Yes |
Engineering Selection Recommendations
For applications requiring direct replacement of the MAX232ID with minimal design modification, MAX232IDR is the primary choice. It maintains identical electrical specifications, package geometry, and pinout while offering active product status and superior supply availability (55,100 units in stock versus 1,125 for the original part).
MAX232ESE+T provides an alternative from Analog Devices Inc./Maxim Integrated with equivalent performance and active status. This part is suitable for designs where secondary sourcing is required for supply chain resilience.
For extended temperature range applications requiring -40°C to 85°C operation with full 120 Kbps data rate capability, ST232BDR and ADM232AARNZ are viable options. ST232BDR uses a 16-SOP package variant, while ADM232AARNZ offers the same package footprint as the original MAX232ID.
ADM232AARNZ-REEL supports enhanced data rates (200 Kbps) and maintains the full -40°C to 85°C operating range, making it suitable for applications requiring higher bandwidth within the same thermal envelope.
ADM202JRNZ variants are suitable only for applications with reduced operating temperature requirements (0°C to 70°C). These parts are not recommended as direct replacements for the MAX232ID in industrial or extended-temperature applications.
MAX202ID and TRS202EID are parametric equivalents but carry obsolete product status, limiting their suitability for new designs or long-term supply commitments.
All recommended substitutes maintain ROHS3 compliance, MSL Level 1 rating, and REACH Unaffected status, ensuring regulatory and environmental compatibility with the original MAX232ID specification.
Frequently Asked Questions (FAQ)
Q: Can MAX232IDR be used as a direct replacement for MAX232ID?
A: Yes. MAX232IDR is electrically and mechanically identical to MAX232ID, with matching pinout, package dimensions (16-SOIC), supply voltage range (4.5V ~ 5.5V), data rate (120 Kbps), and operating temperature range (-40°C ~ 85°C). The primary difference is product status: MAX232IDR is active with higher inventory availability.
Q: What is the difference between 16-SOIC and 16-SOP packages?
A: Both are 16-pin surface mount packages with 0.154" (3.90mm) width. The primary distinction is pitch and lead geometry. Parts specified as 16-SOP (ST232BDR, ADM232AARNZ) may require PCB layout verification to ensure compatibility with existing 16-SOIC footprints. Consult package datasheets for precise dimensional specifications.
Q: Are ADM202JRNZ variants suitable replacements for MAX232ID?
A: ADM202JRNZ variants are not recommended as direct replacements. While they maintain RS232 protocol, 2/2 driver/receiver configuration, and 4.5V ~ 5.5V supply range, they operate only across 0°C to 70°C. Applications requiring the full -40°C to 85°C range of the MAX232ID will exceed the ADM202 operating limits.
Q: Why do some substitute parts list data rates as "not specified"?
A: ADM202JRNZ variants do not provide explicit data rate specifications in the supplied parameters. While functionally compatible with RS232 serial communication, applications requiring guaranteed 120 Kbps operation should select parts with explicit data rate ratings (MAX232IDR, MAX232ESE+T, ST232BDR, ADM232AARNZ-REEL).
Q: Is MAX232ESE+T compatible with existing MAX232ID PCB layouts?
A: Yes. MAX232ESE+T maintains the 16-SOIC package specification and identical pinout. It is suitable for direct PCB substitution without layout modifications.
Q: What is the significance of "Last Time Buy" status for MAX232ID?
A: Last Time Buy indicates the manufacturer has discontinued production and will not accept new orders beyond a specified cutoff date. Existing inventory will be depleted. Designs using MAX232ID should transition to active alternatives such as MAX232IDR or MAX232ESE+T to ensure long-term component availability and supply chain continuity.
Q: Can ADM232AARNZ-REEL replace MAX232ID in high-speed applications?
A: ADM232AARNZ-REEL supports 200 Kbps data rate, exceeding the MAX232ID specification of 120 Kbps. It maintains the full -40°C to 85°C operating range and 16-SOIC package. It is suitable for applications requiring higher bandwidth within the same thermal and package constraints.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts