SN751730NS Equivalent & Substitute Parts

Part Overview

The SN751730NS is a 3/3 full-duplex transceiver IC manufactured by Texas Instruments, housed in a 20-SOIC surface mount package. This component is classified as obsolete, indicating it has been discontinued and is no longer in active production. The part operates within a 4.75V to 5.25V supply voltage range and supports operating temperatures from 0°C to 70°C. Due to its obsolete status, identifying functionally compatible substitute components is essential for ongoing system maintenance, redesign efforts, and procurement continuity.

Substiute Parts

SN751730NS

Texas InstrumentsIn Stock: 967SN751730NS Datasheet

Current PartRFQ

SN65C1167ENSR

Texas InstrumentsIn Stock: 9568SN65C1167ENSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN751730NS is determined by the following critical parameters:

Functional Compatibility Criteria:

• Transceiver type and duplex mode (full-duplex operation required)
• Number of drivers and receivers (3/3 configuration)
• Supply voltage compatibility (4.75V ~ 5.25V nominal range)
• Surface mount packaging with compatible pin pitch (0.209" width SOIC family)
• RoHS3 compliance and MSL rating

Substitution Logic: The SN65C1167ENSR is identified as a substitute based on Texas Instruments' transceiver product family compatibility. Both components are full-duplex transceivers manufactured by the same vendor, share the same SOIC package width specification (0.209", 5.30mm), and maintain ROHS3 compliance with MSL 1 rating. The substitute operates within an overlapping supply voltage range (4.5V ~ 5.5V encompasses the original 4.75V ~ 5.25V specification) and supports an extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SN65C1167ENSR

The SN65C1167ENSR is the designated substitute for the obsolete SN751730NS. Selection of this component is supported by the following engineering factors:

Compliance and Certification: Both components maintain ROHS3 compliance and identical MSL 1 ratings, ensuring compatibility with current manufacturing and environmental standards. The substitute's active product status provides assured long-term availability and supply chain continuity compared to the obsolete original part.

Electrical Compatibility: The substitute's supply voltage range (4.5V ~ 5.5V) fully encompasses the original specification (4.75V ~ 5.25V), ensuring operation within the original design envelope. The extended operating temperature range (-40°C ~ 85°C) exceeds the original specification (0°C ~ 70°C), providing broader environmental applicability.

Physical Compatibility: Both components utilize identical SOIC package width specifications (0.209", 5.30mm), supporting direct PCB layout compatibility without redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can the SN65C1167ENSR directly replace the SN751730NS in existing designs?

A: The SN65C1167ENSR shares compatible electrical and physical parameters with the SN751730NS, including supply voltage overlap, identical SOIC package width, and full-duplex transceiver functionality. However, the difference in driver/receiver count (2/2 versus 3/3) and package pin count (16-SO versus 20-SO) requires circuit-level evaluation to confirm functional equivalence for your specific application.

Q: What is the significance of the obsolete product status?

A: The SN751730NS is no longer manufactured by Texas Instruments. Substitution with an active product such as the SN65C1167ENSR ensures continued component availability, manufacturing support, and compliance with current industry standards.

Q: Are there any temperature range considerations when substituting?

A: The substitute operates across a wider temperature range (-40°C ~ 85°C) compared to the original part (0°C ~ 70°C). If your application operates within the original 0°C ~ 70°C specification, the substitute will function within this envelope. Applications requiring operation below 0°C or above 70°C benefit from the extended range of the substitute.

Q: How do the package specifications compare?

A: Both components use SOIC surface mount packages with identical 0.209" (5.30mm) width. The original part uses a 20-pin configuration while the substitute uses a 16-pin configuration. PCB layout compatibility depends on pin assignment alignment for your specific circuit topology.

Q: What compliance certifications apply to both parts?

A: Both the SN751730NS and SN65C1167ENSR are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, meeting current environmental and reliability standards for industrial and commercial applications.