MAX239CWG Equivalent & Substitute Parts

Part Overview

The MAX239CWG is a full-duplex RS232 transceiver with 3 drivers and 5 receivers, housed in a 24-SOIC surface mount package. This interface IC is designed for serial communication applications requiring RS232 protocol compliance. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing system support, maintenance, and new design implementations where RS232 transceiver functionality is required.

Substiute Parts

MAX239CWG

Analog Devices Inc./Maxim IntegratedIn Stock: 1997MAX239CWG Datasheet

Current PartRFQ

MAX239CWG+

Analog Devices Inc./Maxim IntegratedIn Stock: 682MAX239CWG+ Datasheet

Parametric EquivalentRFQ

HIN239CBZ

Renesas Electronics CorporationIn Stock: 1720HIN239CBZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX239CWG is determined by strict equivalence across the following critical parameters:

• Protocol: RS232
• Number of Drivers/Receivers: 3/5 configuration
• Duplex Mode: Full
• Receiver Hysteresis: 500 mV
• Data Rate: 120 Kbps
• Supply Voltage Range: 5V, 7.5V ~ 13.2V
• Operating Temperature Range: 0°C ~ 70°C
• Package Type: 24-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes. Variations in product status, RoHS compliance, MSL rating, or packaging format (tube vs. other) do not affect functional interchangeability in applications where the electrical and mechanical specifications are met.

Parameter Comparison

Engineering Selection Recommendations

MAX239CWG+ (Recommended Primary Substitute)

The MAX239CWG+ is the direct parametric equivalent manufactured by Analog Devices Inc./Maxim Integrated with active product status. This part maintains identical electrical and mechanical specifications to the MAX239CWG while offering ROHS3 compliance. The packaging format is tube. Selection of MAX239CWG+ is appropriate for applications requiring compliance with modern environmental standards and ongoing manufacturer support.

HIN239CBZ (Alternative Substitute)

The HIN239CBZ is manufactured by Renesas Electronics Corporation and provides parametric equivalence across all critical electrical and mechanical parameters. This part carries ROHS3 compliance and is listed as obsolete. The MSL rating is 3 (168 Hours), which differs from the MAX239CWG and MAX239CWG+ MSL rating of 1 (Unlimited). Selection of HIN239CBZ is suitable for applications where Renesas component qualification is required or where MSL 3 handling procedures are acceptable.

Frequently Asked Questions (FAQ)

Q: Can MAX239CWG+ be used as a direct replacement for MAX239CWG?

A: Yes. The MAX239CWG+ is a parametric equivalent with identical electrical specifications, driver/receiver configuration, data rate, supply voltage range, operating temperature range, and 24-SOIC package dimensions. The primary differences are product status (active vs. obsolete) and RoHS compliance level.

Q: What is the significance of the MSL rating difference between MAX239CWG+ and HIN239CBZ?

A: MSL (Moisture Sensitivity Level) indicates the maximum time a component can be exposed to moisture at specified temperature and humidity conditions before soldering. MAX239CWG+ has MSL 1 (Unlimited), while HIN239CBZ has MSL 3 (168 Hours). This affects storage and handling procedures but does not impact functional performance after assembly.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 24-SOIC package with identical 0.295" width and 7.50mm dimensions, ensuring mechanical and electrical pin compatibility on PCBs designed for the MAX239CWG.

Q: Does RoHS compliance affect functional performance?

A: No. RoHS compliance relates to material composition and environmental standards, not electrical performance. Both RoHS-compliant and non-compliant versions meet identical electrical specifications for RS232 transceiver operation.

Q: Which substitute should be selected for new designs?

A: Selection should be based on supply chain availability, manufacturer qualification requirements, and compliance mandates applicable to the end application. MAX239CWG+ is recommended where Analog Devices/Maxim Integrated qualification is preferred and active product status is required. HIN239CBZ is suitable where Renesas qualification is specified or where alternative sourcing is necessary.