SN75159D Equivalent & Substitute Parts

Part Overview

The SN75159D is a 2/0 Driver IC for RS422 and RS485 interface applications, manufactured by Texas Instruments in a 14-SOIC surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The SN75159D operates within a supply voltage range of 4.75V to 5.25V and is rated for 0°C to 70°C operating temperatures.

Substiute Parts

SN75159D

Texas InstrumentsIn Stock: 1917SN75159D Datasheet

Current PartRFQ

SN65C1167EPWR

Texas InstrumentsIn Stock: 3381SN65C1167EPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75159D is based on the following critical parameters:

• Protocol compatibility: RS422 and RS485 support
• Functional equivalence: Driver and transceiver configurations for serial communication
• Supply voltage overlap: Minimum 4.75V operation capability
• Surface mount packaging: Compatibility with existing PCB designs
• Compliance certifications: ROHS3 compliance and REACH unaffected status

The SN65C1167EPWR qualifies as a substitute based on these criteria. While it functions as a full transceiver (2/2 configuration) rather than a driver-only (2/0 configuration), it provides complete RS422/RS485 protocol support with overlapping supply voltage specifications and identical compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The SN65C1167EPWR is an active product with extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and broader supply voltage tolerance (4.5V to 5.5V versus 4.75V to 5.25V). Both components maintain ROHS3 compliance and unlimited moisture sensitivity ratings. The substitute part's active product status ensures long-term availability and supply chain continuity compared to the obsolete SN75159D. The SN65C1167EPWR's full transceiver configuration (2/2) provides bidirectional capability beyond the driver-only (2/0) functionality of the original part.

Frequently Asked Questions (FAQ)

Q: Can the SN65C1167EPWR directly replace the SN75159D in existing designs?

A: The SN65C1167EPWR provides RS422/RS485 protocol support and surface mount compatibility. However, the package differs (16-TSSOP versus 14-SOIC), requiring PCB layout modifications. The transceiver configuration (2/2) differs from the driver configuration (2/0), necessitating circuit design review.

Q: What are the key differences between these parts?

A: The SN75159D is a driver-only device (2/0), while the SN65C1167EPWR is a full transceiver (2/2). The SN65C1167EPWR operates across a wider temperature range and has broader supply voltage specifications. Package types differ: 14-SOIC versus 16-TSSOP.

Q: Are both parts compliant with current regulations?

A: Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What packaging considerations apply to substitution?

A: The SN75159D uses 14-SOIC packaging while the SN65C1167EPWR uses 16-TSSOP packaging. PCB footprint redesign is required for physical substitution.

Q: Does the SN65C1167EPWR support the same protocols?

A: Both parts support RS422 and RS485 protocols. The substitute provides full duplex transceiver capability compared to the original driver-only configuration.