MAX233AEPP RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX233AEPP is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-pin DIP package. This interface IC is designed for serial communication applications requiring RS232 protocol compliance. The MAX233AEPP is classified as obsolete, making equivalent and substitute parts necessary for new designs, production continuity, and system upgrades. Active alternatives with identical or compatible electrical and mechanical specifications are available from the same manufacturer family.

Substiute Parts

MAX233AEPP

Analog Devices Inc./Maxim IntegratedIn Stock: 6700MAX233AEPP Datasheet

Current PartRFQ

MAX203EEPP+G36

Analog Devices Inc./Maxim IntegratedIn Stock: 2178MAX203EEPP+G36 Datasheet

Parametric EquivalentRFQ

MAX203EPP+G36

Analog Devices Inc./Maxim IntegratedIn Stock: 995MAX203EPP+G36 Datasheet

Parametric EquivalentRFQ

MAX233AEPP+G36

Analog Devices Inc./Maxim IntegratedIn Stock: 941MAX233AEPP+G36 Datasheet

Parametric EquivalentRFQ

MAX233EPP+G36

Analog Devices Inc./Maxim IntegratedIn Stock: 1330MAX233EPP+G36 Datasheet

Parametric EquivalentRFQ

ADM233LANZ

Analog Devices Inc.In Stock: 1348ADM233LANZ Datasheet

MFR RecommendedRFQ

ADM233LJNZ

Analog Devices Inc.In Stock: 7630ADM233LJNZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX233AEPP is determined by strict electrical and mechanical compatibility across the following parameters:

Critical Matching Parameters:

• Protocol: RS232
• Drivers/Receivers Configuration: 2/2
• Duplex Mode: Full
• Data Rate: 120 Kbps
• Supply Voltage Range: 4.75V to 5.25V
• Package Type: 20-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Receiver Hysteresis: 500 mV (primary equivalents) or 650 mV (alternative equivalents)
• Operating Temperature Range: -40°C to 85°C (primary equivalents) or 0°C to 70°C (limited range alternatives)

Substitute Categories:

1. Parametric Equivalents (Full Compatibility): MAX233AEPP+G36, MAX233EPP+G36, MAX203EEPP+G36, MAX203EPP+G36 — These parts maintain identical electrical specifications including 500 mV receiver hysteresis and -40°C to 85°C operating temperature range. All are active products with RoHS3 compliance.

2. Manufacturer Recommended Alternatives (Functional Compatibility with Parameter Variations): ADM233LANZ, ADM233LJNZ — These parts maintain core RS232 transceiver functionality with identical package and pin configuration but feature 650 mV receiver hysteresis. ADM233LJNZ operates within a narrower temperature range (0°C to 70°C) compared to the original specification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select MAX233AEPP+G36, MAX233EPP+G36, MAX203EEPP+G36, or MAX203EPP+G36. These parts are active products with ROHS3 compliance and maintain the original 500 mV receiver hysteresis and full -40°C to 85°C operating temperature range. The +G36 packaging designation indicates tube packaging format. These are optimal for applications requiring strict adherence to the original electrical specifications.

For Alternative Selection (Functional Compatibility with Variations): ADM233LANZ and ADM233LJNZ are manufacturer-recommended alternatives that maintain full RS232 2/2 transceiver functionality within the same 20-DIP package. Both feature 650 mV receiver hysteresis, which provides increased noise immunity compared to the original 500 mV specification. ADM233LANZ maintains the full -40°C to 85°C temperature range, while ADM233LJNZ operates within 0°C to 70°C. Both are ROHS3 compliant and active products. Selection between these alternatives depends on application temperature requirements.

Compliance Consideration: All substitute parts listed are ROHS3 compliant, addressing environmental and regulatory requirements that the obsolete MAX233AEPP does not meet. This compliance upgrade is beneficial for new designs and systems subject to RoHS directives.

Frequently Asked Questions (FAQ)

Q: Can MAX233AEPP+G36 be used as a direct replacement for MAX233AEPP? A: Yes. MAX233AEPP+G36 is electrically and mechanically identical to MAX233AEPP. The +G36 suffix indicates tube packaging format. Both maintain 500 mV receiver hysteresis, -40°C to 85°C operating temperature, and identical pin configuration. The primary difference is product status: MAX233AEPP+G36 is active while MAX233AEPP is obsolete.

Q: What is the difference between MAX203 and MAX233 series substitutes? A: Both MAX203 and MAX233 series parts listed maintain identical electrical specifications for this application: 2/2 RS232 transceiver, 120 Kbps data rate, 500 mV receiver hysteresis, and -40°C to 85°C operating temperature. The base part number difference reflects different product lines within the Maxim Integrated portfolio, but functional compatibility is maintained for this interface application.

Q: Why do ADM233LANZ and ADM233LJNZ have 650 mV receiver hysteresis instead of 500 mV? A: ADM233 series parts feature increased receiver hysteresis (650 mV vs. 500 mV), which provides greater noise immunity in noisy electrical environments. This is a functional enhancement rather than a limitation. Applications operating in clean electrical environments will function identically with either hysteresis specification.

Q: Is ADM233LJNZ suitable for applications requiring -40°C to 85°C operation? A: No. ADM233LJNZ operates within 0°C to 70°C temperature range, which is narrower than the original MAX233AEPP specification of -40°C to 85°C. For applications requiring full -40°C to 85°C operation, select MAX233AEPP+G36, MAX233EPP+G36, MAX203EEPP+G36, MAX203EPP+G36, or ADM233LANZ instead.

Q: Are all substitute parts available in the same 20-DIP through-hole package? A: Yes. All substitute parts listed are housed in 20-DIP (0.300", 7.62mm) through-hole packages with identical pin configurations, ensuring direct PCB compatibility without layout modifications.

Q: What is the significance of ROHS3 compliance on substitute parts? A: ROHS3 compliance indicates that substitute parts meet Restriction of Hazardous Substances directives, restricting lead and other hazardous materials. The original MAX233AEPP is RoHS non-compliant. Selecting ROHS3-compliant substitutes ensures compliance with environmental regulations and is recommended for new designs and systems subject to RoHS requirements.

Q: Can I mix MAX233 and MAX203 series parts in the same design? A: Yes. Both series maintain identical electrical specifications for this 2/2 RS232 transceiver application. However, for design consistency and supply chain management, it is preferable to standardize on a single part number within a product line.