MAX203CWP Equivalent & Substitute Parts

Part Overview

The MAX203CWP is a 2/2 transceiver IC implementing full-duplex RS232 communication in a 20-SOIC surface mount package, manufactured by Analog Devices Inc./Maxim Integrated. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates within a 4.75V to 5.25V supply range with a maximum data rate of 120 kbps and supports operating temperatures from 0°C to 70°C.

Substiute Parts

MAX203CWP

Analog Devices Inc./Maxim IntegratedIn Stock: 1408MAX203CWP Datasheet

Current PartRFQ

SP233ACT-L

MaxLinear, Inc.In Stock: 1284SP233ACT-L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX203CWP is determined by the following critical parameters:

• Interface Protocol: RS232 full-duplex transceiver functionality
• Channel Configuration: 2 drivers and 2 receivers (2/2)
• Package Compatibility: 20-SOIC surface mount form factor with 0.295" (7.50mm) width
• Electrical Specifications: Supply voltage range, receiver hysteresis, and data rate capability
• Operating Temperature Range: 0°C to 70°C

The SP233ACT-L meets all primary substitution criteria, maintaining identical channel configuration, package form factor, and operating temperature specifications. Both parts implement RS232 protocol with full-duplex capability in the same 20-SOIC package.

Parameter Comparison

Engineering Selection Recommendations

Both the MAX203CWP and SP233ACT-L are classified as obsolete products. Selection between these parts should be based on the following factors:

RoHS Compliance: The SP233ACT-L is RoHS compliant, while the MAX203CWP is non-compliant. For applications subject to RoHS regulations or environmental compliance requirements, the SP233ACT-L is the appropriate choice.

Supply Voltage Tolerance: The SP233ACT-L offers a wider supply voltage range (4.5V ~ 5.5V) compared to the MAX203CWP (4.75V ~ 5.25V), providing greater flexibility in power supply design.

Data Rate Capability: The SP233ACT-L supports 240 kbps, exceeding the MAX203CWP's 120 kbps specification. This enhanced capability is backward compatible with lower-speed applications.

Moisture Sensitivity: The MAX203CWP has MSL 1 (unlimited moisture sensitivity level), while the SP233ACT-L has MSL 3 (168 hours). Storage and handling conditions must account for this difference.

Packaging: Both parts are supplied in identical 20-SOIC packages, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the SP233ACT-L directly replace the MAX203CWP on existing PCBs?

A: Yes. Both parts use the 20-SOIC package with identical pinout and footprint. No PCB modifications are required for physical substitution.

Q: What are the key electrical differences between these parts?

A: The SP233ACT-L provides a wider supply voltage range (4.5V ~ 5.5V versus 4.75V ~ 5.25V) and higher data rate capability (240 kbps versus 120 kbps). Both maintain identical receiver hysteresis (500 mV) and operating temperature range (0°C ~ 70°C).

Q: Does the higher data rate of the SP233ACT-L affect compatibility?

A: No. The SP233ACT-L's 240 kbps capability is backward compatible with applications designed for the MAX203CWP's 120 kbps specification. The higher data rate does not impose additional requirements on existing system designs.

Q: What is the significance of the RoHS compliance difference?

A: The SP233ACT-L is RoHS compliant while the MAX203CWP is not. For applications or markets requiring RoHS compliance, the SP233ACT-L is the appropriate selection.

Q: How does the moisture sensitivity level (MSL) difference impact handling?

A: The MAX203CWP (MSL 1) has unlimited shelf life under standard conditions. The SP233ACT-L (MSL 3) requires storage at controlled humidity levels (≤60% RH) for up to 168 hours after packaging. Extended storage may require baking before reflow soldering.

Q: Are both parts still in production?

A: Both the MAX203CWP and SP233ACT-L are classified as obsolete. Availability is limited to existing inventory. Long-term design considerations should evaluate current-generation RS232 transceiver alternatives.