SN65ALS180D Equivalent & Substitute Parts

Part Overview

The SN65ALS180D 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 substitutes necessary for new designs and ongoing production requirements. The transceiver provides full-duplex communication capability with a 60 mV receiver hysteresis specification and operates across the industrial temperature range of -40°C to 85°C with a 4.75V to 5.25V supply voltage.

Substiute Parts

SN65ALS180D

Texas InstrumentsIn Stock: 2000SN65ALS180D Datasheet

Current PartRFQ

SN65ALS180DR

Texas InstrumentsIn Stock: 100248SN65ALS180DR Datasheet

MFR RecommendedRFQ

ADM1491EBRZ

Analog Devices Inc.In Stock: 1381ADM1491EBRZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN65ALS180D is determined by the following critical parameters:

• Protocol compatibility: RS422/RS485 full-duplex operation
• Electrical interface: 1/1 driver/receiver configuration
• Supply voltage range: 4.75V to 5.25V
• Operating temperature range: -40°C to 85°C
• Package form factor: 14-SOIC surface mount
• Receiver hysteresis: 60 mV or lower (more sensitive receiver acceptable)

The SN65ALS180DR (Texas Instruments) qualifies as a direct substitute with identical electrical and mechanical specifications. The ADM1491EBRZ (Analog Devices Inc.) qualifies as a functional equivalent with enhanced performance characteristics (30 mV receiver hysteresis and 16 Mbps data rate specification) while maintaining all critical compatibility parameters.

Parameter Comparison

Engineering Selection Recommendations

The SN65ALS180D is obsolete and should be replaced in new designs. The SN65ALS180DR is the primary substitute, offering identical electrical specifications and active product status from the original manufacturer. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating.

The ADM1491EBRZ from Analog Devices Inc. is an active alternative that meets all critical compatibility requirements. This part features improved receiver hysteresis (30 mV versus 60 mV) and includes a specified data rate of 16 Mbps. Both substitute parts are available in active production status with established supply chains.

Frequently Asked Questions (FAQ)

Q: Can the SN65ALS180DR directly replace the SN65ALS180D?

A: Yes. The SN65ALS180DR is electrically and mechanically identical to the SN65ALS180D, with the primary difference being active product status and packaging format (Cut Tape & Digi-Reel versus Tube).

Q: What is the difference between the SN65ALS180DR and ADM1491EBRZ?

A: Both parts are functionally compatible RS422/RS485 transceivers in 14-SOIC packages. The ADM1491EBRZ has a lower receiver hysteresis specification (30 mV versus 60 mV) and includes a specified data rate of 16 Mbps. The SN65ALS180DR maintains the original specification profile.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 14-SOIC package with identical pinout for RS422/RS485 transceiver applications.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. Both SN65ALS180DR and ADM1491EBRZ are ROHS3 compliant with MSL 1 (Unlimited) rating, matching the original part's compliance profile.

Q: Which substitute should be selected for new designs?

A: The SN65ALS180DR is recommended for designs requiring specification equivalence to the original part. The ADM1491EBRZ is suitable for applications that benefit from enhanced receiver sensitivity and specified data rate performance.