MAX209CWG Equivalent & Substitute Parts

Part Overview

The MAX209CWG is a full-duplex RS232 transceiver with 3 drivers and 5 receivers, packaged in a 24-SOIC surface mount configuration. This interface IC operates across a 4.5V to 5.5V supply range and supports data rates up to 120 Kbps with 500 mV receiver hysteresis. The MAX209CWG is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

MAX209CWG

Analog Devices Inc./Maxim IntegratedIn Stock: 2147MAX209CWG Datasheet

Current PartRFQ

MAX209CWG+

Analog Devices Inc./Maxim IntegratedIn Stock: 736MAX209CWG+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX209CWG is determined by strict equivalence across the following critical parameters:

• Protocol Compatibility: RS232 full-duplex transceiver functionality
• Channel Configuration: 3 drivers and 5 receivers
• Electrical Specifications: 4.5V to 5.5V supply voltage, 120 Kbps data rate, 500 mV receiver hysteresis
• Package Compatibility: 24-SOIC surface mount package with identical pinout and mechanical dimensions
• Thermal Range: 0°C to 70°C operating temperature

The MAX209CWG+ meets all these criteria as a parametric equivalent, with the primary distinction being its active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The MAX209CWG+ is the direct parametric equivalent for MAX209CWG replacement. Both parts share identical electrical specifications, pinout, and package dimensions, ensuring direct substitution without circuit modification.

The MAX209CWG+ offers two significant advantages over the obsolete MAX209CWG:

• Active Product Status: The MAX209CWG+ is actively manufactured and supported by Analog Devices Inc./Maxim Integrated, ensuring long-term availability and supply chain reliability.
• Compliance Enhancement: The MAX209CWG+ achieves ROHS3 compliance, whereas the original MAX209CWG is RoHS non-compliant. This distinction is critical for applications subject to environmental regulations or customer compliance requirements.

Both parts maintain REACH Unaffected status and EAR99 export classification. Selection between these parts should be based on compliance requirements and supply availability, with the MAX209CWG+ recommended for new designs and ongoing production.

Frequently Asked Questions (FAQ)

Q: Can the MAX209CWG+ be used as a direct replacement for MAX209CWG?

A: Yes. The MAX209CWG+ is a parametric equivalent with identical electrical specifications, pinout, and 24-SOIC package dimensions. No circuit modifications are required for substitution.

Q: What is the primary difference between MAX209CWG and MAX209CWG+?

A: The MAX209CWG+ is an active product with ROHS3 compliance, while the MAX209CWG is obsolete and RoHS non-compliant. Both parts are electrically and mechanically identical.

Q: Are there any compatibility concerns with the 24-SOIC package?

A: No. Both parts use the identical 24-SOIC (0.295", 7.50mm Width) package with the same pinout and mechanical footprint. PCB layouts and sockets are fully compatible.

Q: Does the MAX209CWG+ support the same data rate and operating temperature range?

A: Yes. The MAX209CWG+ maintains the same 120 Kbps data rate, 4.5V to 5.5V supply voltage, and 0°C to 70°C operating temperature range as the original MAX209CWG.

Q: Why should I choose MAX209CWG+ over MAX209CWG for new applications?

A: The MAX209CWG+ is recommended for new designs due to its active product status, ensuring long-term availability and support. Additionally, ROHS3 compliance meets current environmental and regulatory standards.

Q: Is the receiver hysteresis specification identical between both parts?

A: Yes. Both the MAX209CWG and MAX209CWG+ feature 500 mV receiver hysteresis, ensuring identical signal integrity performance.