MAX239EWG+ Equivalent & Substitute Parts Reference

Part Overview

The MAX239EWG+ is a full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, designed for serial communication interface applications. This 24-SOIC surface-mount device integrates 3 drivers and 5 receivers, supporting bidirectional data transmission at 120 Kbps. The component is actively produced and widely stocked, with 1144 units available in new original condition. Given its active product status and established market presence, equivalent parts are identified based on matching electrical specifications and mechanical compatibility.

Substiute Parts

MAX239EWG+

Analog Devices Inc./Maxim IntegratedIn Stock: 1221MAX239EWG+ Datasheet

Current PartRFQ

MAX239EWG+

Analog Devices Inc./Maxim IntegratedIn Stock: 1221MAX239EWG+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX239EWG+ is determined by strict equivalence across the following critical parameters:

• Protocol Compatibility: RS232 full-duplex transceiver architecture
• Channel Configuration: 3 drivers and 5 receivers
• Electrical Performance: 120 Kbps data rate, 500 mV receiver hysteresis
• Supply Voltage Range: 5V and 7.5V ~ 13.2V dual-supply operation
• Operating Temperature: -40°C ~ 85°C industrial range
• Package Specification: 24-SOIC surface-mount form factor with 0.295" (7.50mm) width
• Regulatory Compliance: ROHS3 compliance and MSL Level 1 rating

Parts meeting all these parameters are classified as parametric equivalents. The MAX239EWG+ itself represents the current production equivalent, with no alternative part numbers identified in the provided substitute list.

Parameter Comparison

Engineering Selection Recommendations

The MAX239EWG+ is the current production part for this RS232 transceiver specification. Selection is supported by:

• Active Product Status: Continuous manufacturing and supply availability
• Regulatory Compliance: Full ROHS3 compliance ensures environmental and safety standards adherence
• MSL Level 1 Rating: Unlimited moisture sensitivity level eliminates moisture-related reliability concerns in standard storage and handling conditions
• Established Supply Chain: 1144 units in new original stock provide immediate procurement availability

No alternative part numbers meeting the complete parameter set have been identified. Direct specification of MAX239EWG+ is appropriate for new designs and replacement applications requiring this exact transceiver configuration.

Frequently Asked Questions (FAQ)

Q: Can I substitute the MAX239EWG+ with a different RS232 transceiver?

A: Substitution is limited to parts matching all specified parameters: 3/5 driver/receiver configuration, 120 Kbps data rate, 500 mV receiver hysteresis, 5V and 7.5V ~ 13.2V supply voltage range, -40°C ~ 85°C operating temperature, and 24-SOIC package. No alternative part numbers meeting these criteria have been identified.

Q: Is the 24-SOIC package critical for compatibility?

A: Yes. The 24-SOIC (0.295", 7.50mm Width) package specification is a mechanical requirement for PCB layout and assembly. Alternative package types are not interchangeable without circuit board redesign.

Q: Does the MAX239EWG+ meet current environmental standards?

A: Yes. The part is ROHS3 compliant and carries MSL Level 1 rating, meeting current environmental and moisture sensitivity requirements for industrial applications.

Q: What is the significance of the 500 mV receiver hysteresis specification?

A: Receiver hysteresis determines the voltage differential required for input signal transitions. The 500 mV specification is integral to the MAX239EWG+ noise immunity characteristics and cannot be altered through substitution.

Q: Can I use a 5V-only supply instead of the dual-voltage range?

A: The MAX239EWG+ supports both 5V single-supply and 7.5V ~ 13.2V dual-supply operation. Application design determines which supply configuration is used; the part accommodates both within its specified range.