SN75157D Equivalent & Substitute Parts

Part Overview

The SN75157D is a 0/2 Receiver IC for RS422 and RS423 protocols, manufactured by Texas Instruments in an 8-SOIC surface mount package. This component is classified as Last Time Buy, indicating limited future availability. Identifying equivalent and substitute parts is necessary to ensure design continuity and supply chain resilience for applications requiring RS422/RS423 receiver functionality.

Substiute Parts

SN75157D

Texas InstrumentsIn Stock: 3150SN75157D Datasheet

Current PartRFQ

SN75157DR

Texas InstrumentsIn Stock: 8124SN75157DR Datasheet

MFR RecommendedRFQ

UA9637ACD

Texas InstrumentsIn Stock: 2593UA9637ACD Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN75157D is determined by strict equivalence across the following critical parameters:

• Protocol support: RS422 and RS423
• Receiver configuration: 0/2 (zero drivers, two receivers)
• Receiver hysteresis: 70 mV
• Supply voltage range: 4.75V ~ 5.25V
• Operating temperature range: 0°C ~ 70°C
• Package type: 8-SOIC surface mount
• RoHS3 compliance

Parts meeting all these criteria are classified as direct substitutes. Variations in product status, packaging format (tube vs. cut tape), or moisture sensitivity level do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

SN75157DR is the primary substitute for SN75157D. Both parts are manufactured by Texas Instruments with identical electrical and mechanical specifications. SN75157DR maintains Active product status, ensuring continued availability and supply chain stability compared to the Last Time Buy status of SN75157D. Both parts carry MSL Level 1 (Unlimited moisture sensitivity), providing equivalent handling and storage requirements.

UA9637ACD is a parametric equivalent meeting all functional and electrical requirements. This part is also Last Time Buy status. The UA9637ACD carries MSL Level 2 (1 Year), requiring more stringent moisture control during storage and handling compared to SN75157D and SN75157DR.

For new designs or long-term production requirements, SN75157DR is the recommended selection due to its Active product status. For existing inventory management or short-term applications, UA9637ACD provides functional equivalence with attention to moisture sensitivity protocols.

Frequently Asked Questions (FAQ)

Q: Can SN75157DR directly replace SN75157D in existing designs? A: Yes. SN75157DR is a direct functional substitute with identical electrical specifications, receiver hysteresis, supply voltage range, operating temperature, and 8-SOIC package configuration. No design modifications are required.

Q: What is the difference between SN75157D and SN75157DR? A: The primary differences are product status and packaging format. SN75157D is Last Time Buy in tube packaging; SN75157DR is Active in cut tape and Digi-Reel® format. Electrical and mechanical parameters are identical.

Q: Is UA9637ACD compatible with SN75157D applications? A: UA9637ACD meets all functional and electrical requirements for RS422/RS423 receiver applications. The key consideration is moisture sensitivity: UA9637ACD requires MSL Level 2 handling (1 Year storage limit) versus MSL Level 1 (Unlimited) for SN75157D and SN75157DR.

Q: Why is product status relevant for substitution? A: Product status indicates manufacturer support and availability. Active status (SN75157DR) ensures continued supply and technical support. Last Time Buy status indicates limited future production, making Active alternatives preferable for long-term applications.

Q: Are all three parts RoHS3 compliant? A: Yes. SN75157D, SN75157DR, and UA9637ACD are all ROHS3 Compliant, meeting environmental and regulatory requirements for electronic components.

Q: Does packaging format affect electrical performance? A: No. Tube and cut tape packaging formats do not affect electrical performance or functional equivalence. Selection depends on assembly process requirements and inventory management practices.