MAX3235ECWP Equivalent & Substitute Parts

Part Overview

The MAX3235ECWP is a 2/2 transceiver IC implementing full RS232 protocol functionality in a 20-SOIC surface mount package. Manufactured by Analog Devices Inc./Maxim Integrated, this component is classified as obsolete. Due to its obsolete product status and limited remaining inventory, identifying functionally equivalent substitute parts is essential for ongoing system support and new design implementations.

Substiute Parts

MAX3235ECWP

Analog Devices Inc./Maxim IntegratedIn Stock: 18928MAX3235ECWP Datasheet

Current PartRFQ

SP233ACT-L

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX3235ECWP is determined by strict equivalence across the following critical parameters:

• Protocol specification: RS232
• Driver/receiver configuration: 2/2
• Duplex operation: Full
• Receiver hysteresis: 500 mV
• Data rate capability: minimum 240 kbps
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: 0°C ~ 70°C
• Package and pinout: 20-SOIC (0.295", 7.50mm Width)

The SP233ACT-L meets all substitution criteria within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

The SP233ACT-L is a direct functional equivalent to the MAX3235ECWP for RS232 transceiver applications requiring 2/2 driver/receiver configuration. Both components are classified as obsolete products.

Key differentiation factors:

• RoHS Compliance: The SP233ACT-L is RoHS compliant, whereas the MAX3235ECWP is non-compliant. For new designs or systems subject to RoHS regulations, the SP233ACT-L is the appropriate selection.
• Moisture Sensitivity: The MAX3235ECWP carries MSL 1 (unlimited moisture sensitivity protection), while the SP233ACT-L carries MSL 3 (168-hour protection window). Storage and handling procedures must account for this difference.
• Data Rate: The SP233ACT-L operates at 240 kbps versus the MAX3235ECWP at 250 kbps. Both rates are suitable for standard RS232 communication protocols.

Frequently Asked Questions (FAQ)

Q: Can the SP233ACT-L directly replace the MAX3235ECWP in existing designs?

A: Yes. Both components share identical pinout, package dimensions (20-SOIC), and electrical specifications for protocol, driver/receiver count, duplex mode, hysteresis, supply voltage, and operating temperature range. PCB layout and schematic modifications are not required.

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

A: The SP233ACT-L is RoHS compliant while the MAX3235ECWP is not. For applications or markets requiring RoHS compliance, the SP233ACT-L must be selected. For legacy systems with no RoHS requirement, either part is functionally acceptable.

Q: How does the data rate difference (250 kbps vs. 240 kbps) affect substitution?

A: Both data rates exceed standard RS232 communication requirements. The 10 kbps difference does not impact functional compatibility in typical RS232 applications operating at standard baud rates (9600, 19200, 38400, 115200 bps).

Q: What precautions apply to the SP233ACT-L's MSL 3 rating?

A: MSL 3 components require storage in controlled humidity environments (≤60% RH) and must be used within 168 hours of package opening. The MAX3235ECWP's MSL 1 rating allows unlimited storage without humidity control. Verify handling and storage procedures align with your manufacturing environment.

Q: Are both parts suitable for new designs?

A: Both components are classified as obsolete. For new designs, evaluate current-generation RS232 transceiver alternatives. For legacy system support or replacement inventory, the SP233ACT-L is the recommended equivalent.