MAX3238ECPW Equivalent & Substitute Parts

Part Overview

The MAX3238ECPW is a full-duplex RS232 transceiver manufactured by Texas Instruments, featuring 5 drivers and 3 receivers in a 28-TSSOP surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The part operates across a 3V to 5.5V supply range with a 400kbps data rate and is suitable for legacy and modern embedded communication applications requiring RS232 protocol support.

Substiute Parts

MAX3238ECPW

Texas InstrumentsIn Stock: 1439MAX3238ECPW Datasheet

Current PartRFQ

ICL3238EIAZ

Renesas Electronics CorporationIn Stock: 1464ICL3238EIAZ Datasheet

MFR RecommendedRFQ

ICL3238EIAZ-T

Renesas Electronics CorporationIn Stock: 1781ICL3238EIAZ-T Datasheet

MFR RecommendedRFQ

SP3238EEY-L

MaxLinear, Inc.In Stock: 2409SP3238EEY-L Datasheet

MFR RecommendedRFQ

SP3238EEY-L/TR

MaxLinear, Inc.In Stock: 8300SP3238EEY-L/TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX3238ECPW is determined by strict alignment of the following parameters:

• Protocol: RS232 (full-duplex transceiver)
• Number of Drivers/Receivers: 5/3 configuration
• Voltage Supply Range: 3V ~ 5.5V
• Mounting Type: Surface Mount
• RoHS Compliance: ROHS3 Compliant

Package compatibility is evaluated at two levels: identical package (28-TSSOP) for direct drop-in replacement, and functionally equivalent packages (28-SSOP) where pin-to-pin compatibility is maintained. Substitute parts must support the same protocol and driver/receiver configuration to ensure functional equivalence in RS232 communication circuits.

Parameter Comparison

Engineering Selection Recommendations

SP3238EEY-L and SP3238EEY-L/TR are the primary substitutes for MAX3238ECPW due to identical package geometry (28-TSSOP), matching supply voltage range, and active product status. Both parts maintain full RS232 protocol compliance with 5/3 driver/receiver configuration and ROHS3 compliance. SP3238EEY-L/TR offers higher inventory availability (8238 pcs) compared to SP3238EEY-L (2300 pcs).

ICL3238EIAZ and ICL3238EIAZ-T are functionally equivalent alternatives from Renesas Electronics Corporation with active product status and extended operating temperature range (-40°C to 85°C). These parts use the 28-SSOP package, which differs in physical dimensions from the original 28-TSSOP but maintains pin-to-pin compatibility for RS232 transceiver applications. Both ICL3238 variants are suitable where PCB layout accommodates the wider package footprint (5.30mm vs. 4.40mm).

All substitute parts maintain ROHS3 compliance and support the required 3V to 5.5V supply voltage range. Selection between substitutes should prioritize package compatibility with existing PCB designs and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can ICL3238EIAZ replace MAX3238ECPW directly on the PCB?

A: ICL3238EIAZ maintains pin-to-pin compatibility but uses a 28-SSOP package (5.30mm width) versus the original 28-TSSOP package (4.40mm width). PCB layout modifications may be required. SP3238EEY-L or SP3238EEY-L/TR are preferred for direct drop-in replacement due to identical 28-TSSOP packaging.

Q: What is the difference between SP3238EEY-L and SP3238EEY-L/TR?

A: Both parts are functionally identical with matching electrical specifications. SP3238EEY-L/TR has higher inventory availability (8238 pcs vs. 2300 pcs) and represents the tape-reel packaging variant. Selection depends on procurement requirements and supply chain availability.

Q: Are all substitute parts RoHS compliant?

A: Yes. MAX3238ECPW, ICL3238EIAZ, ICL3238EIAZ-T, SP3238EEY-L, and SP3238EEY-L/TR all meet RoHS compliance requirements. ICL3238 variants and SP3238 variants are ROHS3 compliant. SP3238EEY-L/TR is RoHS compliant.

Q: What is the impact of different receiver hysteresis values?

A: MAX3238ECPW specifies 300 mV receiver hysteresis, while ICL3238 variants specify 600 mV and SP3238 variants specify 500 mV. Higher hysteresis values provide improved noise immunity in noisy environments but may affect signal transition timing. Applications with marginal signal quality should evaluate hysteresis impact during validation.

Q: Can I use these substitutes in applications requiring 400kbps data rate?

A: Substitute parts specify 250kbps maximum data rate, which is lower than the original MAX3238ECPW specification of 400kbps. Applications requiring sustained 400kbps operation should evaluate actual performance during system testing, as practical data rates may exceed rated specifications under specific operating conditions.

Q: What is the operating temperature range difference?

A: MAX3238ECPW operates from 0°C to 70°C, while all substitute parts operate from -40°C to 85°C. Substitute parts provide extended temperature range capability, making them suitable for industrial and automotive applications requiring wider operating conditions.