SP481ECN-L/TR Equivalent & Substitute Parts

Part Overview

The SP481ECN-L/TR is a half-duplex RS422/RS485 transceiver IC manufactured by MaxLinear, Inc., housed in an 8-SOIC surface mount package. This interface component operates at 4.75V to 5.25V supply voltage with a 10 Mbps data rate and 20 mV receiver hysteresis. The part is RoHS Compliant and carries an MSL rating of 1 (Unlimited), indicating robust moisture tolerance for standard manufacturing and storage conditions. As an active product with 2,063 units in stock, equivalent and substitute parts are identified for applications requiring alternative sourcing, extended temperature ranges, higher data rates, or different supply voltage specifications.

Key Parameters

Parameter	SP481ECN-L/TR
Manufacturer	MaxLinear, Inc.
Protocol	RS422, RS485
Type	Transceiver Half Duplex
Number of Drivers/Receivers	1/1
Data Rate	10 Mbps
Receiver Hysteresis	20 mV
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SP481ECN-L/TR is determined by the following critical parameters: protocol support (RS422/RS485), transceiver configuration (1/1 half-duplex), package type (8-SOIC), and supply voltage compatibility. Parts are grouped into three categories based on operational constraints:

Category 1: Direct Parametric Equivalent – SP485ECN-L/TR maintains identical electrical specifications and package format, differing only in base product number and RoHS certification variant (ROHS3 vs. RoHS Compliant).

Category 2: Extended Operating Range Substitutes – LTC1481CS8#PBF, LTC1481IS8#PBF, LTC2862MPS8-1#PBF, and LTC2862MPS8-2#PBF support the same protocol and package but offer expanded temperature ranges (-40°C to 125°C or -55°C to 125°C) and/or extended supply voltage windows (3V to 5.5V). These parts introduce trade-offs in receiver hysteresis (45 mV to 150 mV) and data rate specifications (2.5 Mbps to 250 kbps for LTC2862MPS8-2#PBF, or 20 Mbps for LTC2862MPS8-1#PBF).

Category 3: High-Performance Substitutes – MAX14783EASA+ and MAX14783EESA+T deliver enhanced data rates (42 Mbps), lower receiver hysteresis (10 mV), and extended supply voltage (3V to 5.5V) with industrial temperature ratings. MAX481CSA+, MAX481CSA+T, and MAX481ECSA+ provide standard performance with identical supply voltage constraints to the main part.

Parameter Comparison

Part Number	Manufacturer	Protocol	Data Rate	Receiver Hysteresis	Supply Voltage	Operating Temperature	Package	RoHS Status
SP481ECN-L/TR	MaxLinear, Inc.	RS422, RS485	10 Mbps	20 mV	4.75V ~ 5.25V	0°C ~ 70°C	8-SOIC	RoHS Compliant
SP485ECN-L/TR	MaxLinear, Inc.	RS422, RS485	10 Mbps	20 mV	4.75V ~ 5.25V	0°C ~ 70°C	8-SOIC	ROHS3 Compliant
LTC1481CS8#PBF	Analog Devices Inc.	RS422, RS485	2.5 Mbps	45 mV	4.75V ~ 5.25V	0°C ~ 70°C	8-SOIC	ROHS3 Compliant
LTC1481IS8#PBF	Analog Devices Inc.	RS422, RS485	2.5 Mbps	45 mV	4.75V ~ 5.25V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant
LTC2862MPS8-1#PBF	Analog Devices Inc.	RS422, RS485	20 Mbps	150 mV	3V ~ 5.5V	-55°C ~ 125°C	8-SOIC	ROHS3 Compliant
LTC2862MPS8-2#PBF	Analog Devices Inc.	RS422, RS485	250 kbps	150 mV	3V ~ 5.5V	-55°C ~ 125°C	8-SOIC	ROHS3 Compliant
MAX14783EASA+	Analog Devices Inc./Maxim Integrated	RS422, RS485	42 Mbps	10 mV	3V ~ 5.5V	-40°C ~ 125°C	8-SOIC	ROHS3 Compliant
MAX14783EESA+T	Analog Devices Inc./Maxim Integrated	RS422, RS485	42 Mbps	10 mV	3V ~ 5.5V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant
MAX481CSA+	Analog Devices Inc./Maxim Integrated	RS422, RS485	2.5 Mbps	70 mV	4.75V ~ 5.25V	0°C ~ 70°C	8-SOIC	ROHS3 Compliant
MAX481CSA+T	Analog Devices Inc./Maxim Integrated	RS422, RS485	2.5 Mbps	70 mV	4.75V ~ 5.25V	0°C ~ 70°C	8-SOIC	ROHS3 Compliant
MAX481ECSA+	Analog Devices Inc./Maxim Integrated	RS422, RS485	2.5 Mbps	70 mV	4.75V ~ 5.25V	0°C ~ 70°C	8-SOIC	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement: SP485ECN-L/TR is the parametric equivalent with identical electrical performance and package specifications. Selection between SP481ECN-L/TR and SP485ECN-L/TR depends on RoHS certification requirements; both are active products with robust inventory availability (61,340 units for SP485ECN-L/TR).

For Extended Temperature Applications: LTC1481IS8#PBF extends the operating range to -40°C to 85°C while maintaining 4.75V to 5.25V supply voltage compatibility. This part is suitable for industrial environments requiring wider temperature tolerance, though data rate is reduced to 2.5 Mbps.

For Extreme Temperature and Wide Supply Voltage: LTC2862MPS8-1#PBF and LTC2862MPS8-2#PBF support -55°C to 125°C operation and 3V to 5.5V supply voltage, enabling use in harsh industrial and automotive applications. LTC2862MPS8-1#PBF maintains 20 Mbps data rate; LTC2862MPS8-2#PBF is optimized for low-speed applications at 250 kbps.

For High-Speed Applications: MAX14783EASA+ and MAX14783EESA+T deliver 42 Mbps data rate with 10 mV receiver hysteresis and 3V to 5.5V supply voltage support. MAX14783EESA+T is rated to -40°C to 85°C; MAX14783EASA+ extends to -40°C to 125°C. Both are ROHS3 compliant with high inventory availability (51,200 and 105,100 units respectively).

For Standard Performance with Maxim Devices: MAX481CSA+, MAX481CSA+T, and MAX481ECSA+ maintain the original 4.75V to 5.25V supply voltage and 0°C to 70°C temperature range with 2.5 Mbps data rate. These parts are suitable for direct substitution in applications where supply voltage and temperature constraints match the original design.

Frequently Asked Questions (FAQ)

Q: Can SP485ECN-L/TR be used as a direct replacement for SP481ECN-L/TR?

A: Yes. SP485ECN-L/TR is a parametric equivalent with identical electrical specifications (10 Mbps data rate, 20 mV receiver hysteresis, 4.75V to 5.25V supply, 0°C to 70°C operating range) and 8-SOIC package. The primary difference is the RoHS certification variant (ROHS3 vs. RoHS Compliant). Both parts are pin-compatible and functionally interchangeable.

Q: What is the difference between LTC2862MPS8-1#PBF and LTC2862MPS8-2#PBF?

A: Both parts share identical supply voltage (3V to 5.5V), temperature range (-55°C to 125°C), and package specifications. The key difference is data rate: LTC2862MPS8-1#PBF operates at 20 Mbps, while LTC2862MPS8-2#PBF is rated for 250 kbps. Select LTC2862MPS8-1#PBF for higher-speed applications and LTC2862MPS8-2#PBF for low-speed, noise-tolerant environments.

Q: Why do some substitutes have higher receiver hysteresis values?

A: Receiver hysteresis affects noise immunity and signal detection sensitivity. The SP481ECN-L/TR specifies 20 mV hysteresis. Substitutes with higher hysteresis (45 mV for LTC1481 series, 70 mV for MAX481 series, 150 mV for LTC2862 series) provide greater noise rejection but require larger signal transitions for state changes. Select based on your application's noise environment and signal integrity requirements.

Q: Can I use MAX14783EESA+T in place of SP481ECN-L/TR?

A: MAX14783EESA+T is functionally compatible with identical 1/1 half-duplex RS422/RS485 configuration and 8-SOIC package. However, it operates at 3V to 5.5V supply voltage (vs. 4.75V to 5.25V) and -40°C to 85°C temperature range (vs. 0°C to 70°C). The higher data rate (42 Mbps vs. 10 Mbps) and lower hysteresis (10 mV vs. 20 mV) may require circuit re-evaluation for signal integrity and termination. Use only if your design accommodates the extended supply voltage range and temperature specifications.

Q: What packaging options are available for these substitutes?

A: All listed substitutes are housed in 8-SOIC (0.154", 3.90mm Width) surface mount packages, maintaining PCB layout compatibility with SP481ECN-L/TR. Packaging variants (Tube, Cut Tape & Digi-Reel) affect procurement and handling but do not impact electrical or mechanical performance. Verify packaging availability with your supplier based on production volume and assembly requirements.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitutes carry ROHS3 Compliant certification. The original SP481ECN-L/TR is RoHS Compliant (earlier standard). Both certifications meet environmental and hazardous substance restrictions; ROHS3 represents the current regulatory standard. Verify compliance documentation with your procurement team if specific certification versions are required for your application.

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