SN65LBC180AD Equivalent & Substitute Parts

Part Overview

The SN65LBC180AD is a 1/1 full-duplex RS422/RS485 transceiver interface IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The SN65LBC180AD operates within a 4.75V to 5.25V supply voltage range with a maximum data rate of 30Mbps and supports industrial temperature ranges from -40°C to 85°C.

Substiute Parts

SN65LBC180AD

Texas InstrumentsIn Stock: 3768SN65LBC180AD Datasheet

Current PartRFQ

SN65LBC180ADR

Texas InstrumentsIn Stock: 120446SN65LBC180ADR Datasheet

DirectRFQ

ISL8491EIBZ

Renesas Electronics CorporationIn Stock: 2752ISL8491EIBZ Datasheet

MFR RecommendedRFQ

ISL8491EIBZ-T

Renesas Electronics CorporationIn Stock: 2658ISL8491EIBZ-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN65LBC180AD is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Protocol compatibility: RS422/RS485 full-duplex transceiver
• Driver/Receiver configuration: 1/1
• Package type: 14-SOIC surface mount
• Operating temperature range: -40°C to 85°C minimum
• Supply voltage compatibility: overlapping or compatible ranges
• RoHS3 compliance

Substitute Categories:

Direct Equivalent (Same Manufacturer): SN65LBC180ADR is the active production variant of the SN65LBC180AD from Texas Instruments. It maintains identical electrical specifications and package configuration, differing only in product status (active vs. obsolete) and packaging format (Cut Tape & Digi-Reel vs. tube).

Manufacturer-Recommended Alternatives: ISL8491EIBZ and ISL8491EIBZ-T are Renesas Electronics Corporation parts that meet the core functional requirements of RS422/RS485 full-duplex transceiver operation in 14-SOIC packaging. These parts operate within compatible supply voltage ranges (4.5V ~ 5.5V) and temperature specifications. Differences in receiver hysteresis (70 mV vs. 50 mV) and maximum data rate (10Mbps vs. 30Mbps) represent parameter variations within the RS422/RS485 transceiver category that do not prevent functional substitution for standard industrial applications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: SN65LBC180ADR is the primary substitute for SN65LBC180AD. Both parts are manufactured by Texas Instruments with identical electrical specifications and package configuration. SN65LBC180ADR carries active product status with significantly higher inventory availability (120,400 pcs vs. 3,700 pcs), making it the preferred choice for new production and design continuity.

For Alternative Sourcing: ISL8491EIBZ and ISL8491EIBZ-T from Renesas Electronics Corporation are qualified substitutes when Texas Instruments parts are unavailable. Both Renesas variants maintain RS422/RS485 full-duplex transceiver functionality in 14-SOIC packaging with compatible operating temperature ranges and RoHS3 compliance. The ISL8491EIBZ-T variant in Cut Tape & Digi-Reel packaging offers supply chain flexibility comparable to SN65LBC180ADR.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original part. Moisture sensitivity level differences (MSL 1 vs. MSL 3) reflect standard industry variations and do not prevent functional substitution in standard industrial applications.

Frequently Asked Questions (FAQ)

Q: Can SN65LBC180ADR be used as a direct replacement for SN65LBC180AD?

A: Yes. SN65LBC180ADR is the active production equivalent manufactured by Texas Instruments with identical electrical specifications, package type (14-SOIC), and operating parameters. The only differences are product status (active vs. obsolete) and packaging format (Cut Tape & Digi-Reel vs. tube).

Q: What are the key differences between the Texas Instruments SN65LBC180ADR and Renesas ISL8491EIBZ?

A: Both are RS422/RS485 full-duplex transceivers in 14-SOIC packages with -40°C to 85°C operating ranges. The ISL8491EIBZ has a higher receiver hysteresis (70 mV vs. 50 mV) and lower maximum data rate (10Mbps vs. 30Mbps). The supply voltage range is slightly wider for the ISL8491EIBZ (4.5V ~ 5.5V vs. 4.75V ~ 5.25V). These differences do not prevent functional substitution for standard RS422/RS485 applications.

Q: Are there packaging differences between ISL8491EIBZ and ISL8491EIBZ-T?

A: Both parts are identical in electrical specifications and 14-SOIC package type. The difference is in supplier packaging: ISL8491EIBZ is supplied in Tube format, while ISL8491EIBZ-T is supplied in Cut Tape & Digi-Reel format. Selection depends on production volume and assembly line requirements.

Q: Does the lower data rate of ISL8491EIBZ (10Mbps vs. 30Mbps) affect substitution suitability?

A: The ISL8491EIBZ maximum data rate of 10Mbps is sufficient for most industrial RS422/RS485 applications. Substitution is appropriate for applications operating at or below 10Mbps. Applications requiring data rates above 10Mbps should retain the SN65LBC180ADR or SN65LBC180AD.

Q: What is the significance of MSL rating differences?

A: SN65LBC180AD and SN65LBC180ADR have MSL 1 (unlimited moisture sensitivity), while ISL8491EIBZ variants have MSL 3 (168 hours). MSL 3 requires controlled storage conditions and bake-out procedures before reflow soldering. This does not prevent substitution but requires adherence to moisture handling protocols during assembly.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SN65LBC180AD, SN65LBC180ADR, ISL8491EIBZ, and ISL8491EIBZ-T are all ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements.