SN65175DR Equivalent & Substitute Parts

Part Overview

The SN65175DR is a 0/4 Receiver RS422, RS423, RS485 interface IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is classified as Obsolete, with 3715 units currently in stock. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, long-term availability assurance, and system reliability in applications requiring RS422, RS423, or RS485 serial communication protocols.

Substiute Parts

SN65175DR

Texas InstrumentsIn Stock: 3748SN65175DR Datasheet

Current PartRFQ

SN65LBC175ADR

Texas InstrumentsIn Stock: 3102SN65LBC175ADR Datasheet

MFR RecommendedRFQ

DS3486M/NOPB

Texas InstrumentsIn Stock: 6122DS3486M/NOPB Datasheet

MFR RecommendedRFQ

DS3486MX/NOPB

Texas InstrumentsIn Stock: 1579DS3486MX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN65175DR is determined by the following critical parameters:

• Package Compatibility: All substitute parts must use the 16-SOIC surface mount package to ensure PCB layout and assembly compatibility
• Protocol Support: Substitute parts must support RS422, RS423, or RS485 protocols as required by the application
• Electrical Specifications: Supply voltage range (4.75V ~ 5.25V) and receiver hysteresis characteristics must be compatible with the original design
• Operating Temperature Range: Substitute parts must meet or exceed the required temperature specifications for the application environment
• Compliance Standards: RoHS3 compliance and regulatory certifications must be maintained

The following parts meet these substitution criteria and are listed by manufacturer recommendation status.

Parameter Comparison

Engineering Selection Recommendations

SN65LBC175ADR is the manufacturer-recommended primary substitute for the SN65175DR. Both parts maintain identical supply voltage specifications, identical package geometry, and identical operating temperature range (-40°C ~ 85°C). The SN65LBC175ADR is classified as Active, ensuring long-term availability and supply chain stability. This part supports RS422, RS423, and RS485 protocols and maintains ROHS3 compliance. The receiver hysteresis specification differs (40 mV versus 50 mV), which represents a tighter input threshold characteristic suitable for applications requiring enhanced noise immunity.

DS3486M/NOPB and DS3486MX/NOPB are alternative substitutes with Active product status. Both parts share identical package specifications and supply voltage range. However, these alternatives operate within a reduced temperature range (0°C ~ 70°C) compared to the original SN65175DR (-40°C ~ 85°C), limiting their applicability to designs requiring extended low-temperature or high-temperature operation. Protocol support is limited to RS422 and RS423, excluding RS485. The receiver hysteresis specification is significantly higher (140 mV), which may affect signal detection sensitivity in low-noise environments.

Selection between these substitutes depends on application-specific requirements for operating temperature range, protocol support, and receiver hysteresis characteristics.

Frequently Asked Questions (FAQ)

Q: Can the SN65LBC175ADR directly replace the SN65175DR without PCB modifications?

A: Yes. Both parts use the 16-SOIC surface mount package with identical pin assignments and electrical interface specifications. No PCB layout changes are required.

Q: What is the significance of the receiver hysteresis difference between SN65175DR (50 mV) and SN65LBC175ADR (40 mV)?

A: Receiver hysteresis defines the input voltage threshold window for signal detection. The SN65LBC175ADR's lower hysteresis (40 mV) provides a tighter threshold, potentially improving noise immunity in applications with marginal signal quality. The original SN65175DR's 50 mV hysteresis is less stringent.

Q: Why do DS3486M/NOPB and DS3486MX/NOPB have a reduced operating temperature range?

A: These parts are specified for 0°C ~ 70°C operation, which is narrower than the SN65175DR's -40°C ~ 85°C range. Applications requiring extended temperature operation must use SN65LBC175ADR or verify that the reduced range meets system requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, ensuring regulatory alignment with environmental and hazardous substance restrictions.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tube packaging?

A: Cut Tape and Digi-Reel® packaging are suitable for automated pick-and-place assembly processes. Tube packaging is typically used for manual handling or lower-volume applications. Packaging selection depends on manufacturing process requirements and volume considerations.

Q: Can DS3486M/NOPB or DS3486MX/NOPB be used in RS485 applications?

A: No. These parts support only RS422 and RS423 protocols. Applications requiring RS485 support must use SN65LBC175ADR or verify that the application can operate with RS422 or RS423 protocols only.