SN75112DR Equivalent & Substitute Parts

Part Overview

The SN75112DR is a 2/0 Driver interface IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This component is classified as Obsolete, indicating it is no longer in active production. The SN75112DR operates within a supply voltage range of 4.75V to 5.25V and is rated for operating temperatures from 0°C to 70°C. Due to its obsolete status, identifying functionally compatible substitute components is essential for ongoing system design, maintenance, and production continuity.

Substiute Parts

SN75112DR

Texas InstrumentsIn Stock: 3508SN75112DR Datasheet

Current PartRFQ

SN65C1167ENSR

Texas InstrumentsIn Stock: 9568SN65C1167ENSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75112DR is based on the following critical parameters:

• Functional Type: Driver capability with 2 output drivers
• Supply Voltage Compatibility: Operating range must accommodate 4.75V to 5.25V
• Mounting Technology: Surface mount configuration
• Interface Protocol: Driver-class interface functionality
• Environmental Compliance: RoHS3 compliance and MSL rating

The SN65C1167ENSR is identified as a manufacturer-recommended substitute. While this component operates as a 2/2 Transceiver (offering both drivers and receivers compared to the 2/0 driver-only configuration of the SN75112DR), it maintains compatibility through overlapping supply voltage ranges, surface mount packaging, and equivalent environmental compliance ratings. The transceiver functionality provides extended capability beyond the original driver specification.

Parameter Comparison

Engineering Selection Recommendations

The SN65C1167ENSR is the manufacturer-recommended substitute for the obsolete SN75112DR. Both components are ROHS3 compliant and carry MSL rating of 1 (Unlimited), ensuring equivalent environmental and regulatory compliance. The SN65C1167ENSR maintains active product status with Texas Instruments, providing long-term availability and supply chain stability.

Key considerations for selection:

• Supply Voltage: The SN65C1167ENSR operates across 4.5V to 5.5V, which encompasses the SN75112DR range of 4.75V to 5.25V
• Temperature Range: The SN65C1167ENSR extends operating temperature coverage to -40°C to 85°C, exceeding the SN75112DR specification of 0°C to 70°C
• Package Footprint: The SN65C1167ENSR uses a 16-SOIC package (5.30mm width) compared to the 14-SOIC package (3.90mm width) of the SN75112DR, requiring PCB layout modification
• Functional Enhancement: The SN65C1167ENSR provides 2/2 transceiver functionality (drivers and receivers) versus the 2/0 driver-only configuration, offering additional system capability

Frequently Asked Questions (FAQ)

Q: Can the SN65C1167ENSR directly replace the SN75112DR without circuit modification?

A: The SN65C1167ENSR is functionally compatible as a substitute but requires PCB layout changes due to different package dimensions (16-SOIC versus 14-SOIC). Pin configuration differences must be evaluated against the original circuit design.

Q: What is the primary difference between the SN75112DR and SN65C1167ENSR?

A: The SN75112DR is a 2/0 driver (2 outputs, no receivers), while the SN65C1167ENSR is a 2/2 transceiver (2 drivers and 2 receivers). The transceiver provides bidirectional communication capability.

Q: Are both components compliant with current environmental standards?

A: Yes. Both the SN75112DR and SN65C1167ENSR are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting current environmental and regulatory requirements.

Q: Why is the SN75112DR classified as Obsolete?

A: The SN75112DR has been discontinued by Texas Instruments. The SN65C1167ENSR represents the active product line alternative with enhanced specifications and extended availability.

Q: What supply voltage range is acceptable for both components?

A: The overlapping supply voltage range is 4.75V to 5.25V. The SN65C1167ENSR supports a wider range of 4.5V to 5.5V, providing additional design flexibility.

Q: Does the SN65C1167ENSR support the same protocols as the SN75112DR?

A: The SN65C1167ENSR supports RS422 and RS485 protocols, providing standardized interface communication. Protocol compatibility must be verified against the original system requirements.