SP339BER1-L Equivalent & Substitute Parts

Part Overview

The SP339BER1-L is a 3/5 transceiver IC manufactured by MaxLinear, Inc., supporting full and half-duplex RS232, RS422, and RS485 protocols. This component is packaged in a 40-QFN (6x6) surface mount configuration with an exposed pad. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

SP339BER1-L

MaxLinear, Inc.In Stock: 995SP339BER1-L Datasheet

Current PartRFQ

XR34350IL

MaxLinear, Inc.In Stock: 1367XR34350IL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The XR34350IL qualifies as a direct substitute for the SP339BER1-L based on the following critical parameters:

Matching Parameters:

• Identical package type: 40-VFQFN Exposed Pad (40-QFN 6x6)
• Identical mounting type: Surface Mount
• Identical protocol support: RS232, RS422, RS485
• Identical duplex capability: Full, Half
• Identical operating temperature range: -40°C to 85°C
• Identical moisture sensitivity level: MSL 3 (168 Hours)
• Identical manufacturer: MaxLinear, Inc.

Compatible Parameters:

• Driver/Receiver configuration: XR34350IL supports 1/1 and 3/5 configurations, encompassing the 3/5 requirement of SP339BER1-L
• Data rate: XR34350IL supports both 1 Mbps and 20 Mbps, covering the 20 Mbps specification
• Supply voltage: XR34350IL range of 3.135V to 5.25V encompasses the 3.3V and 5V requirements

Parameter Comparison

Engineering Selection Recommendations

The XR34350IL is the designated substitute for the SP339BER1-L. Selection rationale is based on the following factors:

Product Status: The SP339BER1-L is obsolete, while the XR34350IL maintains active product status with current manufacturing support and availability.

Compliance: Both components maintain RoHS compliance. The XR34350IL carries ROHS3 certification, representing current regulatory alignment. Both components are classified under identical ECCN (EAR99) and HTSUS (8542.39.0001) codes.

Package and Mounting Compatibility: Identical package specifications (40-VFQFN Exposed Pad) and surface mount configuration ensure direct PCB-level compatibility without layout modifications.

Functional Compatibility: The XR34350IL encompasses all functional requirements of the SP339BER1-L, including protocol support, duplex modes, and operating temperature range. The broader driver/receiver configuration options and dual data rate support provide design flexibility.

Availability: The XR34350IL demonstrates higher inventory levels (1316 Pcs) compared to the SP339BER1-L (951 Pcs), supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the XR34350IL be used as a direct replacement for the SP339BER1-L in existing designs?

A: Yes. The XR34350IL is electrically and mechanically compatible. Both components share identical package types, mounting configurations, protocol support, and operating temperature ranges. PCB layout and component footprints require no modification.

Q: What is the significance of the receiver hysteresis difference (25 mV vs. 300 mV)?

A: Receiver hysteresis affects noise immunity and signal transition characteristics. The XR34350IL's higher hysteresis (300 mV) provides increased noise margin in electrically noisy environments. Applications requiring the lower hysteresis specification of the original part should conduct signal integrity analysis before substitution.

Q: Are there supply voltage compatibility concerns?

A: No. The XR34350IL supply voltage range (3.135V to 5.25V) fully encompasses the SP339BER1-L specifications (3.3V, 5V). Both components operate across the same nominal supply levels.

Q: Does the XR34350IL support the same data rates?

A: The XR34350IL supports both 1 Mbps and 20 Mbps operation. The SP339BER1-L operates at 20 Mbps. The XR34350IL's dual-rate capability provides backward compatibility while enabling lower-speed applications.

Q: What packaging format is the XR34350IL available in?

A: The XR34350IL is supplied in Tray packaging, compared to the SP339BER1-L's unspecified packaging. Both components use identical 40-QFN (6x6) surface mount packages suitable for automated assembly processes.

Q: Are there any compliance or certification differences?

A: Both components maintain RoHS compliance and identical trade classification codes. The XR34350IL carries ROHS3 certification, representing alignment with current regulatory standards. REACH status for the XR34350IL is classified as unaffected.