SP485ES-L Equivalent & Substitute Parts Reference

Part Overview

The SP485ES-L is a half-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in an 8-pin DIP package for through-hole mounting. This part operates at 4.75V to 5.25V supply voltage with a data rate of 5 Mbps and receiver hysteresis of 10 mV. The SP485ES-L is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility across RS422/RS485 protocol support, half-duplex operation, 1/1 driver/receiver configuration, and identical supply voltage specifications.

Key Parameters

Parameter	SP485ES-L
Manufacturer	MaxLinear, Inc.
Type	Transceiver Half 1/1
Protocol	RS422, RS485
Duplex	Half
Number of Drivers/Receivers	1/1
Data Rate	5 Mbps
Receiver Hysteresis	10 mV
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	8-DIP (0.300", 7.62mm)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the SP485ES-L is determined by the following mandatory parameters:

Protocol support: RS422 and RS485
Duplex configuration: Half-duplex operation
Driver/Receiver count: 1/1 configuration
Supply voltage range: 4.75V ~ 5.25V
Mounting type: Through Hole (8-DIP package)
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories based on package compatibility:

Category 1: Through-Hole 8-DIP Package (Direct Pin-Compatible Substitutes) Parts maintaining identical 8-DIP through-hole mounting enable direct PCB replacement without layout modification. These include ADM1485ANZ, ADM1485JNZ, ADM485ANZ, ADM485JNZ, LTC1485CN8#PBF, LTC1485IN8#PBF, LTC485CN8#PBF, LTC485IN8#PBF, and MAX1487CPA+.

Category 2: Surface-Mount Alternative The SP485EEN-L/TR provides functional equivalence in 8-SOIC surface-mount packaging, suitable for designs transitioning to surface-mount assembly.

Parameter Comparison

Part Number	Manufacturer	Package	Mounting	Protocol	Data Rate	Receiver Hysteresis	Operating Temp	Product Status
SP485ES-L	MaxLinear, Inc.	8-DIP	Through Hole	RS422, RS485	5 Mbps	10 mV	-40°C ~ 85°C	Obsolete
SP485EEN-L/TR	MaxLinear, Inc.	8-SOIC	Surface Mount	RS422, RS485	10 Mbps	20 mV	-40°C ~ 85°C	Active
ADM1485ANZ	Analog Devices Inc.	8-DIP	Through Hole	RS422, RS485	30 Mbps	70 mV	-40°C ~ 85°C	Active
ADM1485JNZ	Analog Devices Inc.	8-DIP	Through Hole	RS422, RS485	30 Mbps	70 mV	0°C ~ 70°C	Active
ADM485ANZ	Analog Devices Inc.	8-DIP	Through Hole	RS422, RS485	5 Mbps	70 mV	-40°C ~ 85°C	Active
ADM485JNZ	Analog Devices Inc.	8-DIP	Through Hole	RS422, RS485	5 Mbps	70 mV	0°C ~ 70°C	Active
LTC1485CN8#PBF	Analog Devices Inc.	8-DIP	Through Hole	RS422, RS485	—	60 mV	0°C ~ 70°C	Active
LTC1485IN8#PBF	Analog Devices Inc.	8-DIP	Through Hole	RS422, RS485	—	60 mV	-40°C ~ 85°C	Active
LTC485CN8#PBF	Analog Devices Inc.	8-DIP	Through Hole	RS422, RS485	—	70 mV	0°C ~ 70°C	Active
LTC485IN8#PBF	Analog Devices Inc.	8-DIP	Through Hole	RS422, RS485	—	70 mV	-40°C ~ 85°C	Active
MAX1487CPA+	Analog Devices Inc./Maxim Integrated	8-DIP	Through Hole	RS422, RS485	2.5 Mbps	70 mV	0°C ~ 70°C	Active

Engineering Selection Recommendations

For Direct Replacement (Through-Hole 8-DIP):

ADM485ANZ and ADM485JNZ are functionally equivalent to SP485ES-L at the 5 Mbps data rate specification. Both are active products with ROHS3 compliance and REACH unaffected status. ADM485ANZ supports the full -40°C to 85°C temperature range matching the original part. ADM485JNZ operates within the 0°C to 70°C range and is suitable for commercial temperature applications.

LTC1485IN8#PBF provides equivalent performance with -40°C to 85°C operating range and ROHS3 compliance. LTC485IN8#PBF offers identical temperature coverage with active product status.

ADM1485ANZ and ADM1485JNZ provide enhanced data rate capability (30 Mbps) while maintaining full protocol compatibility and through-hole 8-DIP packaging. Both carry ROHS3 compliance and REACH unaffected certification.

For Surface-Mount Transition:

SP485EEN-L/TR from MaxLinear, Inc. maintains manufacturer continuity and is the recommended upgrade path for new designs. It provides enhanced data rate (10 Mbps) and active product status with ROHS3 compliance, though it requires PCB layout modification for 8-SOIC surface-mount implementation.

Compliance Considerations:

All substitute parts listed carry ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with modern manufacturing standards. Moisture Sensitivity Level 1 (Unlimited) is maintained across all substitutes.

Frequently Asked Questions (FAQ)

Q: Can ADM1485ANZ directly replace SP485ES-L on existing PCBs?

A: Yes. ADM1485ANZ maintains identical 8-DIP through-hole pinout and package dimensions (0.300", 7.62mm). It supports RS422/RS485 protocols, half-duplex operation, 1/1 driver/receiver configuration, and 4.75V to 5.25V supply voltage. The -40°C to 85°C operating temperature range matches the original specification.

Q: What is the difference between ADM485ANZ and ADM1485ANZ?

A: Both are Analog Devices through-hole 8-DIP transceivers with identical package and temperature range. ADM485ANZ operates at 5 Mbps data rate, matching SP485ES-L. ADM1485ANZ provides enhanced 30 Mbps data rate capability. Selection depends on system bandwidth requirements.

Q: Is LTC1485IN8#PBF compatible with SP485ES-L?

A: Yes. LTC1485IN8#PBF is a through-hole 8-DIP transceiver supporting RS422/RS485 protocols with half-duplex operation and 1/1 driver/receiver configuration. It operates at 4.75V to 5.25V and covers the -40°C to 85°C temperature range. Receiver hysteresis is 60 mV compared to SP485ES-L's 10 mV.

Q: Why would I choose SP485EEN-L/TR over through-hole alternatives?

A: SP485EEN-L/TR is the active MaxLinear product line continuation, providing manufacturer support and supply continuity. It offers enhanced 10 Mbps data rate and surface-mount 8-SOIC packaging suitable for modern PCB assembly processes. Selection requires PCB redesign for surface-mount implementation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.

Q: What is the significance of receiver hysteresis differences?

A: Receiver hysteresis affects noise immunity and signal detection thresholds. SP485ES-L specifies 10 mV hysteresis. Substitute parts range from 60 mV to 70 mV, providing enhanced noise rejection in electrically noisy environments. This parameter does not prevent functional substitution in standard RS422/RS485 applications.

Q: Can I use MAX1487CPA+ as a substitute?

A: MAX1487CPA+ is functionally compatible for RS422/RS485 half-duplex operation with 1/1 driver/receiver configuration and 4.75V to 5.25V supply voltage. However, it operates at 2.5 Mbps data rate and 0°C to 70°C temperature range, which are more restrictive than SP485ES-L specifications. Use only in applications within these operating parameters.

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