SN75ALS180DR Equivalent & Substitute Parts

Part Overview

The SN75ALS180DR is a 1/1 full-duplex RS422/RS485 transceiver manufactured by Texas Instruments in a 14-SOIC surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The SN75ALS180DR operates within a 4.75V to 5.25V supply voltage range with a 60 mV receiver hysteresis specification and supports industrial communication protocols requiring full-duplex transceiver functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN75ALS180DR
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Duplex	Full
Receiver Hysteresis	60 mV
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the SN75ALS180DR is determined by the following critical parameters:

Electrical Compatibility Requirements:

Protocol support: RS422 and RS485 full-duplex operation
Driver/Receiver configuration: 1/1 (one driver, one receiver)
Supply voltage range: 4.75V ~ 5.25V
Package type: 14-SOIC surface mount

Mechanical Compatibility Requirements:

Package dimensions: 14-SOIC (0.154", 3.90mm Width)
Mounting type: Surface mount

Compliance Requirements:

RoHS3 compliance
Moisture Sensitivity Level 1 (Unlimited)

The substitute parts listed below meet all electrical and mechanical compatibility criteria. Variations in receiver hysteresis, data rate, and operating temperature range do not prevent functional substitution when the primary application requirements fall within the substitute part's specifications.

Parameter Comparison

Parameter	SN75ALS180DR	SN65ALS180DR	ADM1491EBRZ-REEL7
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.
Product Status	Obsolete	Active	Active
Type	Transceiver	Transceiver	Transceiver
Protocol	RS422, RS485	RS422, RS485	RS422, RS485
Number of Drivers/Receivers	1/1	1/1	1/1
Duplex	Full	Full	Full
Receiver Hysteresis	60 mV	60 mV	30 mV
Data Rate	—	—	16 Mbps
Voltage - Supply	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SN65ALS180DR (Texas Instruments) is the primary recommended substitute. This part maintains identical electrical specifications to the SN75ALS180DR while offering an extended operating temperature range (-40°C to 85°C) and active product status. The SN65ALS180DR is pin-compatible, functionally equivalent, and provides superior long-term availability and supply chain stability.

ADM1491EBRZ-REEL7 (Analog Devices Inc.) serves as an alternative substitute when SN65ALS180DR availability is constrained. This part meets all core electrical and mechanical requirements with identical supply voltage and package specifications. The ADM1491EBRZ-REEL7 features a lower receiver hysteresis (30 mV versus 60 mV) and specified data rate capability (16 Mbps), providing enhanced performance characteristics. Extended operating temperature range (-40°C to 85°C) and active product status support long-term design viability.

Both substitute parts carry ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original SN75ALS180DR specification.

Frequently Asked Questions (FAQ)

Q: Can SN65ALS180DR directly replace SN75ALS180DR in existing designs?

A: Yes. The SN65ALS180DR is pin-compatible and functionally equivalent. Both parts share identical RS422/RS485 protocol support, 1/1 driver/receiver configuration, full-duplex operation, 4.75V to 5.25V supply voltage range, and 14-SOIC package dimensions. The extended operating temperature range of SN65ALS180DR (-40°C to 85°C) encompasses the original part's 0°C to 70°C specification.

Q: What is the difference between SN75ALS180DR and SN65ALS180DR?

A: The primary differences are product status and operating temperature range. SN75ALS180DR is obsolete with a 0°C to 70°C operating range, while SN65ALS180DR is active with a -40°C to 85°C operating range. Both parts are electrically and mechanically identical in all other specifications.

Q: Is ADM1491EBRZ-REEL7 compatible with SN75ALS180DR applications?

A: Yes, with consideration of specification differences. The ADM1491EBRZ-REEL7 meets all core compatibility requirements: RS422/RS485 protocols, 1/1 transceiver configuration, full-duplex operation, identical supply voltage range, and 14-SOIC package. The lower receiver hysteresis (30 mV) and specified 16 Mbps data rate represent performance enhancements rather than compatibility limitations.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SN65ALS180DR and ADM1491EBRZ-REEL7 are both ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the original SN75ALS180DR specification.

Q: Can I use these substitutes in high-temperature applications?

A: SN65ALS180DR and ADM1491EBRZ-REEL7 both support -40°C to 85°C operating temperature range, extending beyond the original SN75ALS180DR specification (0°C to 70°C). Verify that your specific application requirements fall within the substitute part's rated temperature range.

Q: What packaging options are available for substitute parts?

A: SN65ALS180DR is available in Cut Tape (CT) and Digi-Reel® packaging. ADM1491EBRZ-REEL7 is available in Cut Tape (CT) and Digi-Reel® packaging. Both maintain the 14-SOIC surface mount package format.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message