MAX203CPP RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX203CPP is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated in a 20-pin DIP package. This component is classified as obsolete, indicating it has been discontinued by the manufacturer. Finding equivalent or substitute parts is necessary for ongoing system maintenance, repair, and new design implementations where RS232 interface functionality is required. Active alternatives with identical or compatible electrical and mechanical specifications are available from the same manufacturer family.

Substiute Parts

MAX203CPP

Analog Devices Inc./Maxim IntegratedIn Stock: 2253MAX203CPP Datasheet

Current PartRFQ

MAX203CPP+G36

Analog Devices Inc./Maxim IntegratedIn Stock: 1309MAX203CPP+G36 Datasheet

Parametric EquivalentRFQ

MAX203ECPP+G36

Analog Devices Inc./Maxim IntegratedIn Stock: 1255MAX203ECPP+G36 Datasheet

Parametric EquivalentRFQ

MAX233ACPP+G36

Analog Devices Inc./Maxim IntegratedIn Stock: 1611MAX233ACPP+G36 Datasheet

Parametric EquivalentRFQ

MAX233CPP+G36

Analog Devices Inc./Maxim IntegratedIn Stock: 1264MAX233CPP+G36 Datasheet

Parametric EquivalentRFQ

ADM233LANZ

Analog Devices Inc.In Stock: 1348ADM233LANZ Datasheet

DirectRFQ

ADM233LJNZ

Analog Devices Inc.In Stock: 7630ADM233LJNZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX203CPP is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Protocol: RS232
• Number of Drivers/Receivers: 2/2
• Duplex: Full
• Data Rate: 120 Kbps
• Voltage - Supply: 4.75V ~ 5.25V

Mechanical Compatibility Requirements:

• Package / Case: 20-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole

Substitution Categories:

Parametric Equivalents (MAX203 and MAX233 series with +G36 packaging): These parts maintain identical electrical specifications and package dimensions. They differ only in product status (active vs. obsolete) and RoHS compliance level. The MAX203CPP+G36 and MAX203ECPP+G36 are direct parametric matches from the MAX203 family. The MAX233ACPP+G36 and MAX233CPP+G36 are from the MAX233 family, which shares identical functional specifications with the MAX203 series.

Direct Alternatives (ADM233 series): The ADM233LANZ and ADM233LJNZ are direct manufacturer alternatives from Analog Devices. These parts maintain the same electrical protocol, driver/receiver configuration, and package format. The ADM233 series exhibits a higher receiver hysteresis specification (650 mV vs. 500 mV) and extended operating temperature range in the ADM233LANZ variant (-40°C ~ 85°C), making them suitable for applications requiring enhanced noise immunity or wider temperature operation.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Operating Conditions):

The MAX203CPP+G36 and MAX203ECPP+G36 are the primary recommended substitutes. Both are active products with ROHS3 compliance, maintaining identical electrical specifications and operating temperature range as the obsolete MAX203CPP. These parts provide the most straightforward drop-in replacement path with no design modifications required.

For Applications Requiring Enhanced Noise Immunity:

The ADM233LJNZ offers a higher receiver hysteresis specification (650 mV vs. 500 mV) while maintaining the same operating temperature range (0°C ~ 70°C) as the original MAX203CPP. This characteristic provides improved noise rejection in electrically noisy environments without requiring circuit redesign.

For Extended Temperature Range Applications:

The ADM233LANZ extends the operating temperature range to -40°C ~ 85°C, suitable for industrial or automotive applications requiring operation beyond the standard 0°C ~ 70°C range. This part also provides the enhanced receiver hysteresis benefit.

For MAX233 Series Compatibility:

The MAX233ACPP+G36 and MAX233CPP+G36 are functionally equivalent alternatives from the MAX233 product line. These parts maintain identical electrical and mechanical specifications to the MAX203 series and are available as active products with ROHS3 compliance.

All recommended substitutes are manufactured by Analog Devices Inc./Maxim Integrated, ensuring consistent quality and long-term availability. All active alternatives carry ROHS3 compliance certification, addressing modern environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX203CPP be directly replaced with MAX203CPP+G36?

A: Yes. The MAX203CPP+G36 is a parametric equivalent with identical electrical specifications, operating temperature range, and 20-DIP package format. The primary difference is product status (active vs. obsolete) and packaging type (tube vs. bulk). No circuit modifications are required.

Q: What is the difference between MAX203 and MAX233 series transceivers?

A: Both series maintain identical electrical specifications for the 2/2 full-duplex RS232 transceiver configuration, including data rate, supply voltage, and operating temperature range. They are functionally interchangeable at the circuit level. The MAX233 series represents a later product generation with improved availability and compliance status.

Q: When should ADM233 series be selected over MAX203/MAX233?

A: The ADM233 series should be selected when enhanced receiver hysteresis (650 mV vs. 500 mV) is beneficial for noise-sensitive applications, or when extended temperature operation is required. The ADM233LANZ specifically supports -40°C ~ 85°C operation for industrial applications.

Q: Are all substitute parts compatible with the original 20-DIP through-hole footprint?

A: Yes. All listed substitute parts use the 20-DIP (0.300", 7.62mm) package with through-hole mounting. PCB footprints and board layouts designed for MAX203CPP require no modification for any of the listed alternatives.

Q: What is the significance of the +G36 suffix in part numbers?

A: The +G36 suffix indicates tube packaging and ROHS3 compliance certification. This designation distinguishes active product variants from obsolete bulk-packaged versions, ensuring regulatory compliance for new designs and manufacturing processes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All active substitute parts listed (MAX203CPP+G36, MAX203ECPP+G36, MAX233ACPP+G36, MAX233CPP+G36, ADM233LANZ, and ADM233LJNZ) carry ROHS3 compliance certification. The original MAX203CPP is RoHS non-compliant due to its obsolete status.

Q: Can receiver hysteresis differences affect circuit performance?

A: Receiver hysteresis affects noise immunity and switching threshold characteristics. The ADM233 series with 650 mV hysteresis provides enhanced noise rejection compared to the 500 mV specification of MAX203/MAX233 series. For applications operating in electrically clean environments, both specifications are functionally equivalent. For noise-sensitive applications, the higher hysteresis may provide performance benefits.