SP3249ECY-L/TR Equivalent & Substitute Parts

Part Overview

The SP3249ECY-L/TR is a full-duplex RS232 transceiver manufactured by MaxLinear, Inc., configured with 5 drivers and 3 receivers in a 24-TSSOP surface mount package. This device operates across a 3V to 5.5V supply voltage range and supports data rates up to 250kbps with 500mV receiver hysteresis.

The SP3249ECY-L/TR is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this interface component.

Substiute Parts

SP3249ECY-L/TR

MaxLinear, Inc.In Stock: 1273SP3249ECY-L/TR Datasheet

Current PartRFQ

MAX3387ECUG+T

Analog Devices Inc./Maxim IntegratedIn Stock: 5416MAX3387ECUG+T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SP3249ECY-L/TR is determined by strict equivalence across the following critical parameters:

• Protocol: RS232 full-duplex transceiver functionality
• Package: 24-TSSOP form factor with identical 0.173" width and 4.40mm dimensions
• Electrical specifications: Supply voltage range 3V ~ 5.5V, data rate 250kbps, receiver hysteresis 500mV
• Operating temperature range: 0°C ~ 70°C
• Mounting type: Surface mount configuration

The substitute part MAX3387ECUG+T meets these core requirements. However, the driver/receiver configuration differs: the SP3249ECY-L/TR provides 5 drivers and 3 receivers, while the MAX3387ECUG+T provides 3 drivers and 3 receivers. This difference in channel count must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The MAX3387ECUG+T is an active product from Analog Devices Inc./Maxim Integrated and represents the primary substitute for the obsolete SP3249ECY-L/TR. Both devices share identical electrical specifications, package geometry, and operating parameters.

The MAX3387ECUG+T carries ROHS3 compliance certification, supporting modern environmental and regulatory requirements. The device maintains MSL 1 rating, indicating unlimited moisture sensitivity protection.

The primary design consideration is the reduction in driver channel count from 5 to 3. Applications utilizing all five driver channels of the original SP3249ECY-L/TR require circuit redesign or alternative component selection. Applications utilizing three or fewer driver channels are directly compatible with the MAX3387ECUG+T without modification.

Frequently Asked Questions (FAQ)

Q: Can the MAX3387ECUG+T directly replace the SP3249ECY-L/TR in all applications?

A: Direct replacement is possible only if the application uses three or fewer driver channels. The MAX3387ECUG+T provides 3 drivers versus the SP3249ECY-L/TR's 5 drivers. Applications requiring all five driver channels require circuit redesign.

Q: Are the package dimensions identical between these parts?

A: Yes. Both devices use the 24-TSSOP package with 0.173" width and 4.40mm dimensions. PCB footprints are identical.

Q: What is the difference in product status, and why does it matter?

A: The SP3249ECY-L/TR is obsolete, meaning MaxLinear no longer manufactures or supports this part. The MAX3387ECUG+T is active, ensuring ongoing availability, technical support, and supply chain continuity.

Q: Are the electrical specifications compatible?

A: Yes. Both devices operate at 3V to 5.5V supply voltage, support 250kbps data rates, provide 500mV receiver hysteresis, and operate across 0°C to 70°C temperature range.

Q: Does the MAX3387ECUG+T meet current environmental compliance standards?

A: Yes. The MAX3387ECUG+T is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.