SN65LBC180RGVT Equivalent & Substitute Parts

Part Overview

The SN65LBC180RGVT is a full-duplex RS422/RS485 transceiver manufactured by Texas Instruments, housed in a 16-VQFN (4x4) package with exposed pad. This part is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. The transceiver integrates a single driver and receiver pair, operating within the 4.75V to 5.25V supply voltage range and supporting industrial temperature specifications from -40°C to 85°C.

Substiute Parts

SN65LBC180RGVT

Texas InstrumentsIn Stock: 1053SN65LBC180RGVT Datasheet

Current PartRFQ

SN65LBC180RSAR

Texas InstrumentsIn Stock: 2249SN65LBC180RSAR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN65LBC180RGVT is determined by strict equivalence across the following critical parameters:

• Protocol support: RS422 and RS485 full-duplex operation
• Electrical configuration: 1 driver / 1 receiver pair
• Receiver hysteresis: 45 mV threshold
• Supply voltage range: 4.75V to 5.25V
• Operating temperature range: -40°C to 85°C
• Mounting technology: Surface mount
• Package form factor: 16-pin QFN/VQFN with exposed pad (4x4mm)
• Regulatory compliance: ROHS3 compliant, REACH unaffected

The SN65LBC180RSAR meets all substitution criteria as an active product offering identical electrical specifications and compatible packaging. The transition from RGVT (tube packaging) to RSAR (tape & reel packaging) represents a change in delivery format only, with no impact on functional or electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The SN65LBC180RSAR is the direct active equivalent for the obsolete SN65LBC180RGVT. Selection of the RSAR variant is supported by the following factors:

• Identical electrical and functional specifications across all critical parameters
• Active product status ensures long-term availability and supply chain continuity
• Maintained ROHS3 compliance and REACH unaffected status
• Compatible 16-pin QFN package with exposed pad maintains PCB layout compatibility
• Tape & reel packaging format aligns with high-volume production workflows

The MSL rating difference (MSL 1 versus MSL 2) reflects standard industry practice for active products and does not impact functional equivalence. Storage and handling procedures must follow the MSL 2 specification for the RSAR variant.

Frequently Asked Questions (FAQ)

Q: Can the SN65LBC180RSAR be used as a direct replacement for the SN65LBC180RGVT?

A: Yes. The RSAR variant is electrically and functionally identical to the RGVT. The difference is packaging format: RGVT uses tube packaging while RSAR uses tape & reel. Both parts are housed in the same 16-VQFN (4x4) package with exposed pad and support identical RS422/RS485 protocols, supply voltage, temperature range, and pin configuration.

Q: What is the difference between RGVT and RSAR packaging?

A: RGVT denotes tube packaging, typically used for lower-volume or legacy applications. RSAR denotes tape & reel packaging, the standard format for high-volume production. The die and electrical performance are identical; only the delivery method differs.

Q: Are there any PCB layout considerations when switching from RGVT to RSAR?

A: No. Both variants use the same 16-VQFN (4x4) package footprint with exposed pad. PCB layouts designed for RGVT require no modification to accommodate RSAR.

Q: Does the MSL rating difference affect substitution?

A: No. The MSL 2 rating of the RSAR requires adherence to moisture control procedures during storage and handling, but does not affect electrical performance or functional equivalence. Standard MSL 2 handling practices are industry-standard for active components.

Q: Is the SN65LBC180RSAR compliant with the same regulatory standards?

A: Yes. Both RGVT and RSAR variants maintain ROHS3 compliance and REACH unaffected status. No regulatory differences exist between the two variants.