SN75114N Equivalent & Substitute Parts

Part Overview

The SN75114N is a 2/0 driver IC manufactured by Texas Instruments in the 75000 series. This component is classified as an interface driver with through-hole mounting in a 16-DIP package. The product is currently obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs requiring similar driver functionality.

Substiute Parts

SN75114N

Texas InstrumentsIn Stock: 9020SN75114N Datasheet

Current PartRFQ

SN65C1167ENSR

Texas InstrumentsIn Stock: 9568SN65C1167ENSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The SN65C1167ENSR qualifies as a manufacturer-recommended substitute based on the following substitution criteria:

Functional Compatibility: Both components are Texas Instruments interface ICs within the same product family (75000/65000 series). The SN65C1167ENSR provides enhanced functionality with 2/2 driver/receiver configuration and full-duplex RS422/RS485 protocol support, exceeding the 2/0 driver-only specification of the SN75114N.

Electrical Parameters: Supply voltage ranges are compatible, with the SN65C1167ENSR operating across 4.5V ~ 5.5V, which encompasses the SN75114N operating range of 4.75V ~ 5.25V. Both components meet ROHS3 compliance and EAR99 export classification requirements.

Package Consideration: The primary substitution constraint is the package change from 16-DIP through-hole to 16-SOIC surface-mount. This requires PCB redesign and assembly process modification.

Parameter Comparison

Engineering Selection Recommendations

The SN65C1167ENSR is the manufacturer-recommended substitute for the obsolete SN75114N. Both components maintain ROHS3 compliance and identical export classification (EAR99), ensuring regulatory continuity.

The SN65C1167ENSR 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). The transceiver configuration (2/2) provides bidirectional capability with RS422/RS485 protocol support, compared to the unidirectional driver configuration (2/0) of the original part.

Implementation requires PCB layout modification due to package transition from through-hole DIP to surface-mount SOIC, and assembly process adjustment to accommodate SMD soldering requirements.

Frequently Asked Questions (FAQ)

Q: Can the SN65C1167ENSR be used as a direct pin-for-pin replacement?

A: No. While both components are 16-pin interface ICs from Texas Instruments, the SN65C1167ENSR uses a 16-SOIC surface-mount package compared to the 16-DIP through-hole package of the SN75114N. PCB redesign is required.

Q: What are the key functional differences between these components?

A: The SN75114N is a 2/0 driver (output only), while the SN65C1167ENSR is a 2/2 full-duplex transceiver with RS422/RS485 protocol support. The substitute provides bidirectional communication capability.

Q: Are there supply voltage compatibility concerns?

A: No. The SN65C1167ENSR supply voltage range (4.5V ~ 5.5V) fully encompasses the SN75114N operating range (4.75V ~ 5.25V). Both components operate within standard 5V logic supply specifications.

Q: Does the operating temperature range affect substitution suitability?

A: The SN65C1167ENSR has an extended operating temperature range (-40°C ~ 85°C) compared to the SN75114N (0°C ~ 70°C). This provides greater thermal margin for applications within the original temperature specification.

Q: Are regulatory and compliance certifications maintained?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes. Regulatory status remains consistent across the substitution.