SP487ET-L/TR RS422/RS485 Driver IC Equivalent & Substitute Parts

Part Overview

The SP487ET-L/TR is a 4/0 Driver RS422/RS485 interface IC manufactured by MaxLinear, Inc., housed in a 16-SOIC package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates at 10 Mbps data rate with a supply voltage range of 4.75V to 5.25V and temperature range of -40°C to 85°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	SP487ET-L/TR
Manufacturer	MaxLinear, Inc.
Category	Interface
Type	Driver
Protocol	RS422, RS485
Number of Drivers/Receivers	4/0
Data Rate	10 Mbps
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the SP487ET-L/TR is determined by the following critical parameters:

Protocol compatibility: RS422/RS485
Number of drivers/receivers: 4/0 configuration
Package type: 16-SOIC form factor
Supply voltage range: 4.75V ~ 5.25V
Mounting type: Surface Mount

Substitute parts must maintain identical or compatible electrical specifications across these parameters. The SP487CT-L/TR (MaxLinear) and LTC487 series (Analog Devices) meet these criteria. Temperature range variations and product status differences are noted but do not prevent functional substitution when application requirements permit.

Parameter Comparison

Parameter	SP487ET-L/TR	SP487CT-L/TR	LTC487CSW#PBF	LTC487CSW#TRPBF	LTC487ISW#PBF	LTC487ISW#TRPBF
Manufacturer	MaxLinear, Inc.	MaxLinear, Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Protocol	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485
Number of Drivers/Receivers	4/0	4/0	4/0	4/0	4/0	4/0
Voltage - Supply	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring the SP487ET-L/TR, the following selection criteria apply:

SP487CT-L/TR is the direct MaxLinear equivalent with active product status and RoHS compliance. This part maintains identical electrical specifications and package form factor. The operating temperature range is narrower (0°C to 70°C versus -40°C to 85°C), which may restrict use in extended temperature applications.

LTC487ISW#PBF and LTC487ISW#TRPBF (Analog Devices) provide full temperature range coverage (-40°C to 85°C) matching the original SP487ET-L/TR specification. Both are ROHS3 compliant with unlimited moisture sensitivity rating. The primary difference is packaging: tube (PBF) versus tape and reel (TRPBF).

LTC487CSW#PBF and LTC487CSW#TRPBF (Analog Devices) are suitable for applications within the 0°C to 70°C temperature range. These parts offer superior moisture handling (MSL 1 versus MSL 3) and ROHS3 compliance.

All substitute parts maintain the 4.75V to 5.25V supply voltage specification and 16-SOIC package compatibility required for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can SP487CT-L/TR directly replace SP487ET-L/TR?

A: Yes. Both parts are manufactured by MaxLinear, Inc., share identical electrical specifications (4.75V to 5.25V supply, RS422/RS485 protocol, 4/0 driver configuration), and use the same 16-SOIC package. SP487CT-L/TR is active production status. The operating temperature range differs (0°C to 70°C versus -40°C to 85°C); verify application temperature requirements before substitution.

Q: What is the difference between LTC487CSW and LTC487ISW variants?

A: The primary difference is operating temperature range. LTC487CSW operates 0°C to 70°C; LTC487ISW operates -40°C to 85°C. Both maintain identical RS422/RS485 protocol support, 4/0 driver configuration, and 16-SOIC package. Select based on application temperature requirements.

Q: What does the packaging suffix mean (PBF vs. TRPBF)?

A: PBF indicates tube packaging; TRPBF indicates tape and reel packaging. Both contain identical die and electrical specifications. Tape and reel packaging is standard for automated assembly; tube packaging is used for manual handling or lower-volume applications.

Q: Are all substitute parts RoHS compliant?

A: SP487CT-L/TR is RoHS Compliant. All LTC487 variants (LTC487CSW#PBF, LTC487CSW#TRPBF, LTC487ISW#PBF, LTC487ISW#TRPBF) are ROHS3 Compliant. The original SP487ET-L/TR RoHS status is not specified.

Q: Which substitute part has the best moisture handling?

A: All LTC487 variants (Analog Devices) feature MSL 1 (Unlimited), superior to the SP487ET-L/TR MSL 3 (168 Hours). SP487CT-L/TR maintains MSL 3 specification.

Q: Can I use LTC487CSW parts in applications requiring -40°C to 85°C operation?

A: No. LTC487CSW is rated 0°C to 70°C. For full temperature range coverage matching SP487ET-L/TR, use LTC487ISW#PBF or LTC487ISW#TRPBF.

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