SN75119P Equivalent & Substitute Parts

Part Overview

The SN75119P is a full-duplex transceiver IC manufactured by Texas Instruments, housed in an 8-DIP through-hole package. This component is classified as obsolete, indicating it is no longer in active production. Due to its obsolete status and limited availability for new designs, identifying functionally compatible substitute components is essential for system continuity and procurement planning.

Substiute Parts

SN75119P

Texas InstrumentsIn Stock: 2145SN75119P Datasheet

Current PartRFQ

THVD1500DR

Texas InstrumentsIn Stock: 5000156THVD1500DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75119P is based on the following critical parameters:

• Voltage Supply Compatibility: Both parts must operate within the 4.5V ~ 5.5V range
• Transceiver Configuration: 1/1 driver/receiver count maintained
• Electrical Interface: Interface category classification
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The THVD1500DR is identified as a manufacturer-recommended substitute. While it differs in duplex mode (half-duplex vs. full-duplex) and mounting technology (surface mount vs. through-hole), it maintains the core voltage supply range, transceiver type, and driver/receiver configuration. The transition from through-hole to surface-mount packaging and full-duplex to half-duplex operation represents a design consideration rather than a functional incompatibility, as these parameters depend on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The THVD1500DR is an active product with current manufacturing support from Texas Instruments, addressing the obsolescence status of the SN75119P. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

Selection of the THVD1500DR requires evaluation of the following design factors:

• Duplex Mode Change: The transition from full-duplex to half-duplex operation necessitates protocol-level assessment within the target application
• Mounting Technology: Surface-mount packaging requires PCB redesign compared to through-hole implementation
• Temperature Range Expansion: The THVD1500DR supports -40°C ~ 125°C versus 0°C ~ 70°C, providing extended operational capability
• Voltage Supply Compatibility: Both components operate within identical supply voltage parameters

Frequently Asked Questions (FAQ)

Q: Can the THVD1500DR directly replace the SN75119P without circuit modification?

A: Direct pin-for-pin replacement is not possible due to package differences (8-DIP vs. 8-SOIC). PCB layout redesign is required. Additionally, the duplex mode change from full to half requires protocol verification.

Q: What is the primary reason for substitution?

A: The SN75119P is obsolete and no longer manufactured. The THVD1500DR is an active product from the same manufacturer with compatible electrical specifications.

Q: Are there compliance concerns with using the THVD1500DR?

A: Both components are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance across substitution.

Q: How does the operating temperature range difference affect selection?

A: The THVD1500DR supports a wider temperature range (-40°C ~ 125°C vs. 0°C ~ 70°C). Selection depends on the specific thermal requirements of the target application.

Q: What is the significance of the duplex mode difference?

A: Full-duplex allows simultaneous bidirectional communication, while half-duplex requires time-division multiplexing. Application protocol requirements determine whether this change is acceptable.

Q: Are the voltage supply requirements identical?

A: Yes, both components operate within the 4.5V ~ 5.5V supply range, eliminating power supply redesign requirements.