MAX233EPP RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX233EPP is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-pin DIP package. This component is classified as obsolete, indicating that direct replacements from the original manufacturer are no longer in active production. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure design continuity, and support legacy equipment requiring RS232 serial communication interfaces.

Substiute Parts

MAX233EPP

Analog Devices Inc./Maxim IntegratedIn Stock: 1395MAX233EPP 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 of the MAX233EPP is determined by strict equivalence across the following parameters:

• Protocol: RS232
• Number of Drivers/Receivers: 2/2
• Duplex Mode: Full
• Data Rate: 120 Kbps
• Voltage Supply Range: 4.75V ~ 5.25V
• Package / Case: 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 ~ 85°C (primary equivalents) or 0°C ~ 70°C (limited range alternatives)

Substitute parts are grouped into two categories:

Parametric Equivalents (MAX203 and MAX233 Series with Active Status): These parts maintain identical electrical specifications and package configuration. The MAX233AEPP+G36, MAX233EPP+G36, MAX203EPP+G36, and MAX203EEPP+G36 are direct functional replacements with active product status and RoHS3 compliance.

Manufacturer Recommended Alternatives (ADM233 Series): The ADM233LANZ and ADM233LJNZ offer equivalent core functionality with minor parameter variations. The ADM233 series features increased receiver hysteresis (650 mV versus 500 mV) and represents Analog Devices' current-generation recommendation for new designs and legacy replacements.

Parameter Comparison

Engineering Selection Recommendations

For Direct Functional Replacement (Preferred): Select MAX233EPP+G36, MAX233AEPP+G36, MAX203EPP+G36, or MAX203EEPP+G36. These parts maintain identical electrical parameters, including 500 mV receiver hysteresis and full -40°C ~ 85°C operating temperature range. All are active products with RoHS3 compliance, ensuring long-term availability and regulatory conformance.

For Extended Temperature Range Applications: The MAX233EPP+G36 and MAX233AEPP+G36 are preferred within the MAX233 series, or MAX203EPP+G36 and MAX203EEPP+G36 within the MAX203 series, as they maintain the full -40°C ~ 85°C operating range.

For Manufacturer-Recommended Modern Alternative: The ADM233LANZ provides full -40°C ~ 85°C temperature coverage with increased receiver hysteresis (650 mV), representing Analog Devices' current-generation recommendation. This part is suitable for applications where enhanced noise immunity is beneficial.

For Cost-Optimized Replacement in Limited Temperature Environments: The ADM233LJNZ operates within a narrower temperature range (0°C ~ 70°C) and offers the highest inventory availability (7572 units). This part is appropriate for applications not requiring extended low-temperature operation.

Frequently Asked Questions (FAQ)

Q: Can MAX233EPP be directly replaced with MAX203EPP+G36?

A: Yes. Both parts are parametric equivalents with identical RS232 2/2 transceiver configuration, 500 mV receiver hysteresis, 120 Kbps data rate, 4.75V ~ 5.25V supply voltage, -40°C ~ 85°C operating temperature, and 20-DIP package. The primary difference is product status: MAX203EPP+G36 is active with RoHS3 compliance.

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

A: Both series are parametrically equivalent for the MAX233EPP application. The MAX233 and MAX203 series differ in base product designation but maintain identical electrical specifications and package configuration. Selection between them is based on inventory availability and supplier preference.

Q: Why do ADM233LANZ and ADM233LJNZ have 650 mV receiver hysteresis instead of 500 mV?

A: The ADM233 series features increased receiver hysteresis (650 mV versus 500 mV), providing enhanced noise immunity in electrically noisy environments. This parameter difference does not prevent functional substitution but may affect signal detection thresholds in noise-sensitive applications.

Q: Is ADM233LJNZ suitable for all MAX233EPP applications?

A: ADM233LJNZ is suitable for applications operating within the 0°C ~ 70°C temperature range. Applications requiring extended low-temperature operation below 0°C must use ADM233LANZ, MAX233EPP+G36, MAX233AEPP+G36, MAX203EPP+G36, or MAX203EEPP+G36, which all support -40°C ~ 85°C.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (MAX233EPP+G36, MAX233AEPP+G36, MAX203EPP+G36, MAX203EEPP+G36, ADM233LANZ, and ADM233LJNZ) are RoHS3 compliant. The original MAX233EPP is RoHS non-compliant.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All substitute parts use identical 20-DIP (0.300", 7.62mm) through-hole packaging and pin configuration, allowing direct socket replacement without PCB modification.

Q: Which substitute part has the best availability?

A: ADM233LJNZ has the highest inventory availability at 7572 units. For applications requiring extended temperature range (-40°C ~ 85°C), MAX233EPP+G36 offers 1302 units in stock.