SN75173DR Equivalent & Substitute Parts

Part Overview

The SN75173DR is an active RS422, RS423, and RS485 receiver interface IC manufactured by Texas Instruments. This 16-SOIC surface mount device functions as a 0/4 receiver with 50 mV hysteresis, designed for serial communication applications requiring multi-drop or long-distance transmission protocols. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when electrical parameters, mechanical specifications, and compliance certifications remain equivalent across the component family.

Substiute Parts

SN75173DR

Texas InstrumentsIn Stock: 1306SN75173DR Datasheet

Current PartRFQ

SN75175DR

Texas InstrumentsIn Stock: 30189SN75175DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The SN75175DR qualifies as a parametric equivalent to the SN75173DR based on the following critical substitution criteria:

Electrical Parameters: Both devices support identical protocols (RS422, RS423, RS485), maintain the same receiver configuration (0/4), and operate within the same supply voltage range (4.75V ~ 5.25V). Receiver hysteresis specification is identical at 50 mV. Operating temperature range matches at 0°C ~ 70°C.

Mechanical Specifications: Both components utilize the 16-SOIC package with identical physical dimensions (0.154", 3.90mm Width) and surface mount mounting type, ensuring direct PCB compatibility without layout modifications.

Compliance & Certifications: Both parts maintain Active product status, ROHS3 compliance, MSL Level 1 (Unlimited), and identical REACH and ECCN classifications.

Parameter Comparison

Engineering Selection Recommendations

The SN75175DR serves as a direct substitute for the SN75173DR in applications requiring RS422, RS423, or RS485 serial communication. Both components maintain Active product status with identical compliance certifications (ROHS3, REACH Unaffected, EAR99 ECCN classification). The electrical and mechanical specifications are fully equivalent, supporting identical supply voltage ranges, operating temperatures, and package configurations. Selection between these parts may be determined by inventory availability and lead time considerations, as both devices meet all specified technical and regulatory requirements for interface receiver applications.

Frequently Asked Questions (FAQ)

Q: Can the SN75175DR replace the SN75173DR in existing designs? A: Yes. Both devices are electrically and mechanically equivalent with identical protocol support (RS422, RS423, RS485), receiver configuration (0/4), hysteresis (50 mV), supply voltage range (4.75V ~ 5.25V), operating temperature (0°C ~ 70°C), and 16-SOIC package specifications. No design modifications are required.

Q: Are there differences in compliance or certifications between these parts? A: No. Both the SN75173DR and SN75175DR maintain identical RoHS3 compliance, MSL Level 1 (Unlimited) rating, REACH Unaffected status, and EAR99 ECCN classification.

Q: What determines substitution eligibility for RS422/RS485 receiver ICs? A: Substitution eligibility is determined by matching protocol support, receiver/driver configuration, receiver hysteresis specification, supply voltage range, operating temperature range, package type, and mounting method. Compliance certifications and product status must also align.

Q: Are there any package or pinout considerations when substituting these parts? A: Both parts utilize the identical 16-SOIC package with 0.154" width (3.90mm). No PCB layout modifications or pinout adjustments are necessary for substitution.

Q: What inventory status should influence part selection? A: The SN75175DR currently maintains higher inventory availability (30,100 pcs) compared to the SN75173DR (1,207 pcs). For applications without time-critical constraints, the SN75175DR may offer improved lead time performance.