MAX209EWG RS232 Transceiver - Equivalent & Substitute Parts

Part Overview

The MAX209EWG is a full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, designed for serial communication applications requiring 3 drivers and 5 receivers. This interface IC operates across a 4.5V to 5.5V supply range with a maximum data rate of 120 Kbps and is housed in a 24-SOIC surface mount package.

The MAX209EWG is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term product availability for legacy systems and new designs requiring this specific transceiver configuration.

Substiute Parts

MAX209EWG

Analog Devices Inc./Maxim IntegratedIn Stock: 880MAX209EWG Datasheet

Current PartRFQ

MAX209EWG+

Analog Devices Inc./Maxim IntegratedIn Stock: 745MAX209EWG+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX209EWG is determined by strict equivalence across the following critical parameters:

• Protocol Compatibility: RS232 full-duplex transceiver
• Channel Configuration: 3 drivers and 5 receivers
• Electrical Specifications: 4.5V to 5.5V supply voltage, 500 mV receiver hysteresis, 120 Kbps data rate
• Thermal Range: -40°C to 85°C operating temperature
• Package Specification: 24-SOIC surface mount package with 0.295" (7.50mm) width
• Functional Equivalence: Identical pinout and electrical behavior

The MAX209EWG+ meets all these criteria and serves as a direct parametric equivalent. The primary distinction between these parts is product status and compliance certification, not functional or electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The MAX209EWG+ is the direct substitute for the MAX209EWG. Both parts are electrically and functionally identical across all specified parameters. The MAX209EWG+ is preferred for new designs and ongoing production due to its active product status and ROHS3 compliance certification. The MAX209EWG remains suitable for legacy system maintenance where existing inventory is available and RoHS compliance is not a design requirement.

Selection between these parts should be based on:

• Compliance Requirements: If ROHS3 compliance is mandated, the MAX209EWG+ is the required choice.
• Supply Chain Continuity: The MAX209EWG+ maintains active manufacturing status, ensuring long-term availability.
• Legacy System Support: The MAX209EWG may be used in existing systems where supply exists and compliance exemptions apply.

Frequently Asked Questions (FAQ)

Q: Can the MAX209EWG+ be used as a direct replacement for the MAX209EWG in existing designs?

A: Yes. The MAX209EWG+ is electrically and functionally identical to the MAX209EWG. All electrical parameters, pinout, package dimensions, and performance specifications are equivalent. No circuit modifications are required.

Q: What is the difference between MAX209EWG and MAX209EWG+?

A: The primary differences are product status and compliance certification. The MAX209EWG is obsolete and RoHS non-compliant, while the MAX209EWG+ is active and ROHS3 compliant. Electrical and functional specifications are identical.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the identical 24-SOIC package with 0.295" (7.50mm) width. Pinout and mechanical dimensions are equivalent.

Q: Which part should be selected for new designs?

A: The MAX209EWG+ should be selected for new designs. It maintains active manufacturing status and meets current RoHS compliance requirements.

Q: Is the MAX209EWG still available for purchase?

A: The MAX209EWG is classified as obsolete. Availability is limited to existing inventory. The MAX209EWG+ is the recommended alternative for ongoing procurement.

Q: Do both parts operate across the same temperature and voltage ranges?

A: Yes. Both parts operate across -40°C to 85°C and require a 4.5V to 5.5V supply voltage. Operating specifications are identical.