SP3243EUER-L/MTR RS232 Transceiver - Equivalent & Substitute Parts

Part Overview

The SP3243EUER-L/MTR is a full-duplex RS232 transceiver manufactured by MaxLinear, Inc., designed for 3/5 driver/receiver configurations in 32-QFN surface mount packages. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The device operates across 3V to 5.5V supply ranges with a 1 Mbps data rate and is RoHS compliant with MSL 2 moisture sensitivity rating.

Substiute Parts

SP3243EUER-L/MTR

MaxLinear, Inc.In Stock: 1160SP3243EUER-L/MTR Datasheet

Current PartRFQ

SP3243EUER-L/TR

MaxLinear, Inc.In Stock: 1050SP3243EUER-L/TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SP3243EUER-L/MTR is determined by strict equivalence across the following critical parameters:

• Protocol: RS232 full-duplex transceiver
• Driver/Receiver Configuration: 3/5 channel architecture
• Electrical Performance: 1 Mbps data rate, 300 mV receiver hysteresis
• Supply Voltage Range: 3V to 5.5V operation
• Package: 32-QFN (5x5) with exposed pad, surface mount
• Compliance: RoHS compliant, MSL 2 rating

The primary substitute SP3243EUER-L/TR maintains identical electrical and mechanical specifications, differing only in packaging format (Tape & Reel versus cut tape). This part is currently active in production, making it the direct parametric equivalent for component replacement.

Parameter Comparison

Engineering Selection Recommendations

The SP3243EUER-L/TR is the direct parametric equivalent for SP3243EUER-L/MTR replacement. Both parts maintain identical electrical specifications, thermal performance, and compliance certifications. The distinction lies in packaging format: MTR denotes cut tape packaging, while TR indicates Tape & Reel format. Selection between these variants depends on procurement volume and assembly line requirements rather than functional compatibility.

The SP3243EUER-L/TR is currently active in production, ensuring availability for new designs and ongoing component replenishment. Both parts carry RoHS compliance and MSL 2 moisture sensitivity ratings, meeting equivalent environmental and reliability standards.

Frequently Asked Questions (FAQ)

Q: Can SP3243EUER-L/TR directly replace SP3243EUER-L/MTR in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (cut tape versus Tape & Reel). No circuit modifications or PCB layout changes are required.

Q: What does the MTR and TR designation mean?

A: MTR indicates cut tape packaging, typically used for lower-volume orders. TR indicates Tape & Reel packaging, standard for high-volume production runs. The component itself is identical.

Q: Are there any compliance differences between these parts?

A: No. Both parts carry identical RoHS compliance status and MSL 2 moisture sensitivity ratings. They meet the same environmental and reliability standards.

Q: Why is the SP3243EUER-L/MTR discontinued?

A: Discontinuation at DiGi Electronics does not indicate product obsolescence. The SP3243EUER-L/TR remains active and available from MaxLinear, Inc. Procurement should transition to the TR variant for ongoing supply.

Q: What is the operating temperature range for these parts?

A: Both parts operate across 0°C to 70°C. Verify your application requirements fall within this range before selection.

Q: Are these parts suitable for 3.3V and 5V systems?

A: Yes. Both parts operate across 3V to 5.5V supply range, making them compatible with 3.3V, 5V, and intermediate voltage systems.