SP488CT-L Equivalent & Substitute Parts

Part Overview

The SP488CT-L is a 0/4 Receiver RS422/RS485 interface IC manufactured by MaxLinear, Inc., housed in a 16-SOIC package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates within a 4.75V to 5.25V supply range and supports data rates up to 10 Mbps across industrial communication protocols.

Substiute Parts

SP488CT-L

MaxLinear, Inc.In Stock: 1190SP488CT-L Datasheet

Current PartRFQ

LTC488CSW#PBF

Analog Devices Inc.In Stock: 2061LTC488CSW#PBF Datasheet

MFR RecommendedRFQ

LTC488CSW#TRPBF

Analog Devices Inc.In Stock: 1991LTC488CSW#TRPBF Datasheet

MFR RecommendedRFQ

LTC488ISW#PBF

Analog Devices Inc.In Stock: 2033LTC488ISW#PBF Datasheet

MFR RecommendedRFQ

LTC488ISW#TRPBF

Analog Devices Inc.In Stock: 1847LTC488ISW#TRPBF Datasheet

MFR RecommendedRFQ

TB5R1DW

Texas InstrumentsIn Stock: 1143TB5R1DW Datasheet

MFR RecommendedRFQ

TB5R2DWR

Texas InstrumentsIn Stock: 3730TB5R2DWR Datasheet

MFR RecommendedRFQ

TB5R3DW

Texas InstrumentsIn Stock: 917TB5R3DW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Package Compatibility: All substitute parts must use 16-SOIC (0.295", 7.50mm Width) surface mount packaging to ensure PCB layout compatibility
• Functional Equivalence: All substitutes must provide 0/4 Receiver configuration for RS422/RS485 protocols
• Electrical Compatibility: Supply voltage range and operating temperature must encompass or match the original specification
• Interface Protocol: RS422/RS485 protocol support is mandatory for signal integrity in industrial communication applications

The substitute parts identified fall into two manufacturer categories: Analog Devices Inc. (LTC488 series) and Texas Instruments (TB5R series). All substitutes maintain the 16-SOIC package footprint and 0/4 receiver configuration. Voltage supply ranges vary slightly between manufacturers, with Texas Instruments parts supporting 4.5V ~ 5.5V versus the original 4.75V ~ 5.25V specification. Operating temperature ranges differ, with Analog Devices industrial-grade parts (LTC488ISW) and Texas Instruments parts supporting -40°C ~ 85°C, exceeding the original 0°C ~ 70°C range.

Parameter Comparison

Engineering Selection Recommendations

Analog Devices LTC488 Series (Recommended Primary Substitutes)

The LTC488CSW#PBF and LTC488CSW#TRPBF variants provide exact electrical parameter matching to the SP488CT-L, including identical 4.75V ~ 5.25V supply voltage and 0°C ~ 70°C operating temperature range. Both are active products with ROHS3 compliance and superior moisture sensitivity ratings (MSL 1 vs. MSL 3). The LTC488ISW variants extend operating temperature to -40°C ~ 85°C for applications requiring wider thermal performance. All LTC488 parts maintain RS422/RS485 protocol support and are available in both tube and tape & reel packaging configurations.

Texas Instruments TB5R Series (Alternative Substitutes)

The TB5R1DW, TB5R2DWR, and TB5R3DW parts provide functional equivalence with slightly broader supply voltage tolerance (4.5V ~ 5.5V) and extended operating temperature range (-40°C ~ 85°C). These parts are active products with ROHS3 compliance. Protocol specification is not explicitly documented for the TB5R series in the provided data. All three variants maintain the 16-SOIC package footprint and 0/4 receiver configuration. TB5R2DWR offers the highest inventory availability (3642 units) in tape & reel format.

Selection Criteria

For applications requiring exact electrical parameter matching and documented RS422/RS485 protocol support, the Analog Devices LTC488CSW series is the primary recommendation. For applications with extended temperature requirements or broader supply voltage tolerance, the LTC488ISW or TB5R series are appropriate. Packaging selection (tube vs. tape & reel) should align with production volume and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can the LTC488ISW series replace the SP488CT-L in all applications?

A: The LTC488ISW series provides functional equivalence with extended operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C). Electrical parameters including supply voltage (4.75V ~ 5.25V), receiver count (0/4), and package (16-SOIC) are identical. The extended temperature range does not create incompatibility in standard industrial applications.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging (suffix #PBF) is suitable for lower-volume applications and manual assembly. Tape & reel packaging (suffix #TRPBF or #DWR) is designed for automated pick-and-place assembly and higher production volumes. Electrical and functional specifications are identical between packaging types.

Q: Are the Texas Instruments TB5R parts fully compatible with the SP488CT-L?

A: The TB5R series maintains identical package (16-SOIC), receiver configuration (0/4), and mounting type (surface mount). Supply voltage range is slightly broader (4.5V ~ 5.5V vs. 4.75V ~ 5.25V), and operating temperature extends to -40°C ~ 85°C. Protocol specification is not documented for the TB5R series in the provided data. Verify protocol compatibility with Texas Instruments datasheets before selection.

Q: What does MSL rating mean for component substitution?

A: Moisture Sensitivity Level (MSL) indicates the component's sensitivity to moisture absorption during storage and handling. The SP488CT-L has MSL 3 (168 hours), while substitute parts have MSL 1 (unlimited) or MSL 2 (1 year). Lower MSL ratings provide greater storage flexibility and reduced risk of moisture-related failures during assembly.

Q: Is RoHS compliance important for this substitution?

A: All active substitute parts are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components. The original SP488CT-L does not specify RoHS status. ROHS3 compliance ensures compatibility with modern manufacturing and end-market requirements.

Q: Which substitute offers the best inventory availability?

A: The TB5R2DWR (Texas Instruments, tape & reel) offers the highest inventory at 3642 units. The LTC488CSW#PBF and LTC488ISW#PBF (Analog Devices, tube) each have 2000 units available. Selection should balance availability with electrical parameter matching requirements.