SP337EBCT-L Equivalent & Substitute Parts

Part Overview

The SP337EBCT-L is a 2/2 transceiver IC with full-duplex RS232, RS422, and RS485 protocol support, manufactured by MaxLinear, Inc. in a 28-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

The SP337EBCT-L operates across 3.3V to 5V supply voltage with a maximum data rate of 250kbps and receiver hysteresis of 500mV. Its 28-SOIC package measures 0.295" × 7.50mm width. With 771 units currently in stock, this part remains available but requires substitution planning for long-term applications.

Substiute Parts

SP337EBCT-L

MaxLinear, Inc.In Stock: 871SP337EBCT-L Datasheet

Current PartRFQ

SP338EER1-L

MaxLinear, Inc.In Stock: 27315SP338EER1-L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SP337EBCT-L is determined by the following critical parameters:

• Protocol Compatibility: Both parts must support RS232, RS422, and RS485 protocols
• Duplex Mode: Full-duplex operation is required
• Supply Voltage Range: Acceptable overlap within 3.3V to 5V operating window
• Package Type: Surface mount technology with compatible pinout and footprint
• Electrical Performance: Data rate and receiver hysteresis specifications must meet or exceed application requirements
• Manufacturer Support: Active product status preferred for long-term availability

The SP338EER1-L qualifies as a substitute based on these parameters. While it offers enhanced specifications (higher data rate, extended temperature range, and active product status), it maintains protocol compatibility and full-duplex operation within the required voltage range.

Parameter Comparison

Engineering Selection Recommendations

For SP337EBCT-L Replacement:

The SP338EER1-L is the manufacturer-recommended substitute. Selection of this part is supported by:

• Active Product Status: The SP338EER1-L maintains active manufacturing status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status meet current environmental and regulatory requirements
• Enhanced Performance: Higher data rate (1Mbps vs. 250kbps) and extended operating temperature range (-40°C to 85°C) provide design margin for demanding applications
• Same Manufacturer: MaxLinear, Inc. maintains consistent design philosophy and quality standards across both parts

Design Considerations:

Package transition from 28-SOIC to 40-QFN requires PCB layout modification. The increased driver/receiver count (3/5 vs. 2/2) provides additional interface channels without compromising backward compatibility for 2/2 applications. Lower receiver hysteresis (300mV vs. 500mV) improves noise immunity in RS422/RS485 applications.

Frequently Asked Questions (FAQ)

Q: Can the SP338EER1-L directly replace the SP337EBCT-L without PCB modification?

A: No. The SP337EBCT-L uses a 28-SOIC package while the SP338EER1-L uses a 40-QFN (6x6) package. PCB layout redesign is required, including footprint changes and routing modifications.

Q: Are the supply voltage requirements compatible?

A: Yes. Both parts operate within the 3.3V to 5V range. The SP338EER1-L specifies discrete voltage levels (3.3V, 5V) while the SP337EBCT-L specifies a continuous range (3.3V ~ 5V). Both are compatible with standard 3.3V and 5V supply systems.

Q: What is the impact of the increased driver/receiver count (3/5 vs. 2/2)?

A: The SP338EER1-L provides three drivers and five receivers compared to the SP337EBCT-L's two drivers and two receivers. For applications using only 2/2 configuration, the additional channels remain unused but do not affect functionality of the active channels.

Q: Does the lower receiver hysteresis (300mV vs. 500mV) affect compatibility?

A: Lower receiver hysteresis improves noise immunity and signal detection sensitivity. This is a performance enhancement that does not create compatibility issues. Applications designed for 500mV hysteresis will operate correctly with 300mV hysteresis.

Q: What are the moisture sensitivity implications?

A: Both parts carry MSL 3 (168 Hours) rating. Handling, storage, and reflow procedures remain identical between the two parts.

Q: Is the SP338EER1-L suitable for applications requiring 0°C to 70°C operation?

A: Yes. The SP338EER1-L operating range of -40°C to 85°C fully encompasses the 0°C to 70°C requirement of the SP337EBCT-L.