SP385EEA-L/TR Equivalent & Substitute Parts

Part Overview

The SP385EEA-L/TR is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., supplied in Tape & Reel packaging. This interface IC operates across 3V to 5V supply voltage with a 120Kbps data rate and is designed for surface mount applications in the 20-SSOP package. The part is currently active in production with RoHS compliance certification. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and functional equivalence within the RS232 transceiver category.

Substiute Parts

SP385EEA-L/TR

MaxLinear, Inc.In Stock: 3917SP385EEA-L/TR Datasheet

Current PartRFQ

ADM1385ARSZ-REEL

Analog Devices Inc.In Stock: 2108ADM1385ARSZ-REEL Datasheet

MFR RecommendedRFQ

ADM1385ARSZ-REEL7

Analog Devices Inc.In Stock: 3890ADM1385ARSZ-REEL7 Datasheet

MFR RecommendedRFQ

LTC1385CG#PBF

Analog Devices Inc.In Stock: 2149LTC1385CG#PBF Datasheet

MFR RecommendedRFQ

LTC1385IG#PBF

Analog Devices Inc.In Stock: 2132LTC1385IG#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SP385EEA-L/TR are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Type: Transceiver
• Number of Drivers/Receivers: 2/2
• Duplex: Full
• Package / Case: 20-SSOP (0.209", 5.30mm Width)
• Mounting Type: Surface Mount

Secondary Compatibility Factors:

• Protocol compatibility (RS232 or RS562)
• Operating temperature range coverage
• Supply voltage range overlap
• Data rate capability
• RoHS and environmental compliance status

The substitute parts identified fall into two functional groups: Analog Devices ADM1385 series (RS232 protocol) and Analog Devices LTC1385 series (RS562 protocol). Both groups maintain the 2/2 transceiver configuration and 20-SSOP package form factor required for direct mechanical and electrical substitution.

Parameter Comparison

Engineering Selection Recommendations

ADM1385ARSZ-REEL and ADM1385ARSZ-REEL7 (Primary Substitutes): These Analog Devices parts maintain RS232 protocol compatibility with the SP385EEA-L/TR and are recommended as direct functional equivalents. Both parts feature identical 2/2 transceiver configuration, 20-SSOP package, and full-duplex operation. The ADM1385 series operates within a narrower supply voltage range (3V ~ 3.6V) compared to the SP385EEA-L/TR (3V ~ 5V), requiring verification that the application supply voltage does not exceed 3.6V. Both ADM1385 variants achieve ROHS3 compliance and offer improved moisture sensitivity (MSL 1, Unlimited) compared to the original part. The ADM1385ARSZ-REEL is supplied in Tape & Reel packaging matching the original, while ADM1385ARSZ-REEL7 is supplied in Cut Tape & Digi-Reel® format.

LTC1385CG#PBF and LTC1385IG#PBF (Secondary Substitutes): These Analog Devices parts provide functional equivalence in the 2/2 full-duplex transceiver category with 20-SSOP packaging. The LTC1385 series operates on RS562 protocol rather than RS232, which may require application-level protocol compatibility assessment. Both parts feature identical receiver hysteresis (400 mV), data rate (120KBd), and supply voltage range (3V ~ 3.6V) as the ADM1385 series. The LTC1385CG#PBF operates across 0°C ~ 70°C, which is narrower than the original part's -40°C ~ 85°C range and may not be suitable for extended temperature applications. The LTC1385IG#PBF maintains the full -40°C ~ 85°C operating temperature range and is the preferred LTC1385 variant for temperature-critical applications.

All substitute parts carry active product status and current RoHS3 compliance certification, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can ADM1385ARSZ-REEL directly replace SP385EEA-L/TR in my application?

A: The ADM1385ARSZ-REEL provides functional equivalence in transceiver type, driver/receiver count (2/2), duplex mode (full), and 20-SSOP package form factor. The primary consideration is supply voltage: the ADM1385 operates within 3V ~ 3.6V, while the SP385EEA-L/TR supports 3V ~ 5V. If your application supply voltage remains within 3V ~ 3.6V, the ADM1385ARSZ-REEL is a compatible substitute. The ADM1385 also features improved moisture sensitivity (MSL 1 vs. MSL 2) and higher data rate capability (460Kbps vs. 120Kbps).

Q: What is the difference between ADM1385ARSZ-REEL and ADM1385ARSZ-REEL7?

A: Both parts are electrically and functionally identical. The difference is packaging format: ADM1385ARSZ-REEL is supplied in standard Tape & Reel (TR) format, while ADM1385ARSZ-REEL7 is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on your procurement and assembly process requirements.

Q: Why do LTC1385 parts use RS562 protocol instead of RS232?

A: The LTC1385 series is designed for RS562 protocol applications. While both RS232 and RS562 are serial communication standards, they have different electrical specifications and use cases. The LTC1385 parts are listed as substitutes based on matching mechanical package, transceiver configuration, and driver/receiver count, but protocol compatibility must be verified for your specific application.

Q: Is LTC1385CG#PBF suitable for industrial temperature applications?

A: The LTC1385CG#PBF operates across 0°C ~ 70°C, which is narrower than the SP385EEA-L/TR range of -40°C ~ 85°C. For applications requiring extended temperature operation below 0°C or above 70°C, the LTC1385IG#PBF is the appropriate choice, as it maintains the full -40°C ~ 85°C operating range.

Q: Are all substitute parts RoHS compliant?

A: Yes. The SP385EEA-L/TR carries RoHS Compliant certification, while all substitute parts (ADM1385ARSZ-REEL, ADM1385ARSZ-REEL7, LTC1385CG#PBF, and LTC1385IG#PBF) carry ROHS3 Compliant certification, ensuring regulatory alignment for current and future applications.

Q: What is the significance of Moisture Sensitivity Level (MSL) differences?

A: The SP385EEA-L/TR has MSL 2 (1 Year), meaning the component must be used within one year of packaging opening. All substitute parts have MSL 1 (Unlimited), allowing indefinite shelf life after packaging opening. This provides greater flexibility in inventory management and reduces risk of moisture-related failures during storage.