SP332CT-L/TR Equivalent & Substitute Parts

Part Overview

The SP332CT-L/TR is a 4/4 transceiver IC supporting RS232 and RS485 protocols in a 28-SOIC surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates at 5V supply voltage with a data rate of 10Mbps and is rated for 0°C to 70°C operating temperature range.

Substiute Parts

SP332CT-L/TR

MaxLinear, Inc.In Stock: 3131SP332CT-L/TR Datasheet

Current PartRFQ

SP336EEY-L/TR

MaxLinear, Inc.In Stock: 17295SP336EEY-L/TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The SP336EEY-L/TR qualifies as a manufacturer-recommended substitute based on the following substitution criteria:

Core Functional Compatibility:

• Identical driver/receiver configuration (4/4)
• Full duplex operation maintained
• Same manufacturer (MaxLinear, Inc.)
• Backward compatible protocol support (RS232, RS485 included in SP336EEY-L/TR's RS232, RS422, RS485 support)

Allowed Parameter Variations:

• Package format change from 28-SOIC to 28-TSSOP (both surface mount, same pin count)
• Enhanced data rate capability (250kbps vs. 10Mbps original)
• Extended supply voltage range (3.3V, 5V vs. 5V only)
• Wider operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C)
• Improved receiver hysteresis (500 mV vs. 70 mV)
• Active product status with RoHS compliance

Parameter Comparison

Engineering Selection Recommendations

The SP336EEY-L/TR is the manufacturer-recommended substitute for the obsolete SP332CT-L/TR. Selection of this substitute is justified by:

Product Lifecycle Considerations:

• SP332CT-L/TR is obsolete; SP336EEY-L/TR is active and in production
• SP336EEY-L/TR offers improved availability (17,186 pcs in stock vs. 3,100 pcs for original)

Compliance & Environmental:

• SP336EEY-L/TR is RoHS compliant
• Moisture sensitivity improved from MSL 3 to MSL 1
• Both parts carry identical ECCN and HTSUS classifications

Functional Equivalence:

• Maintains 4/4 transceiver configuration and full duplex operation
• Supports all original protocols (RS232, RS485) with additional RS422 capability
• Pin-compatible within same package family (28-pin surface mount)

Design Flexibility:

• Extended operating temperature range accommodates broader application requirements
• Dual supply voltage support (3.3V, 5V) provides design flexibility
• Enhanced receiver hysteresis improves noise immunity

Frequently Asked Questions (FAQ)

Q: Can SP336EEY-L/TR directly replace SP332CT-L/TR in existing designs?

A: The SP336EEY-L/TR is functionally equivalent for RS232 and RS485 applications. Pin compatibility exists within the 28-pin surface mount family. PCB layout modifications may be required due to package format change (SOIC to TSSOP). Verify footprint compatibility with your PCB design tools before implementation.

Q: What is the difference between 28-SOIC and 28-TSSOP packages?

A: Both are 28-pin surface mount packages with identical pin counts. The SOIC (Small Outline Integrated Circuit) has a body width of 7.50mm, while TSSOP (Thin Shrink Small Outline Package) has a body width of 4.40mm. TSSOP offers a smaller footprint. PCB layout and reflow profile adjustments may be necessary when transitioning between these package types.

Q: Why does SP336EEY-L/TR have a lower data rate (250kbps vs. 10Mbps)?

A: The data rate specification reflects the maximum supported communication speed for each device. The SP336EEY-L/TR's 250kbps rating is sufficient for standard RS232, RS422, and RS485 industrial communication applications. Verify your application's actual data rate requirements against this specification.

Q: Is the SP336EEY-L/TR compatible with 5V-only designs?

A: Yes. The SP336EEY-L/TR supports both 3.3V and 5V supply voltages. Designs currently operating at 5V will function without modification. The dual voltage support provides flexibility for future design iterations.

Q: What does the improved receiver hysteresis (500 mV vs. 70 mV) mean for my application?

A: Receiver hysteresis determines the voltage difference required between logic state transitions. The higher hysteresis of the SP336EEY-L/TR provides improved noise immunity in electrically noisy environments. This is beneficial for industrial and long-distance communication applications.

Q: Are there any certifications or compliance differences?

A: Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. The SP336EEY-L/TR is RoHS compliant, while the SP332CT-L/TR does not specify RoHS status. The SP336EEY-L/TR also features improved moisture sensitivity (MSL 1 vs. MSL 3), reducing handling and storage requirements.