SN75140P Equivalent & Substitute Parts

Part Overview

The SN75140P is a 0/2 Receiver interface IC manufactured by Texas Instruments in 8-PDIP through-hole packaging. This component is classified as obsolete, indicating it has been discontinued and is no longer in active production. The SN75140P operates within a supply voltage range of 4.5V to 5.5V 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 system redesign, legacy product support, and procurement continuity.

Substiute Parts

SN75140P

Texas InstrumentsIn Stock: 2188SN75140P Datasheet

Current PartRFQ

SN65C1167ENSR

Texas InstrumentsIn Stock: 9568SN65C1167ENSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75140P is determined by the following critical parameters:

Supply Voltage Compatibility: The substitute part must operate within the 4.5V to 5.5V range to ensure direct electrical compatibility with existing power supply designs.

Interface Category: Both the main part and substitute must belong to the Interface category to maintain functional equivalence in signal processing applications.

Receiver/Transceiver Functionality: The SN75140P functions as a receiver (0/2 configuration). Substitute parts with transceiver capability (2/2 configuration) are acceptable as they provide receiver functionality as a subset of their operational modes.

Compliance Standards: Both parts must maintain ROHS3 compliance and REACH unaffected status to satisfy regulatory requirements for new designs and procurement.

Electrical Characteristics: Operating temperature range and receiver hysteresis specifications (where applicable) must be compatible with the application requirements.

The SN65C1167ENSR qualifies as a substitute based on matching supply voltage range, interface category, ROHS3 compliance, and REACH status, while providing enhanced receiver/transceiver capability suitable for modern interface applications.

Parameter Comparison

Engineering Selection Recommendations

The SN65C1167ENSR is an active, production-supported substitute for the obsolete SN75140P. Both components maintain identical supply voltage specifications (4.5V to 5.5V) and comply with ROHS3 and REACH regulatory requirements, ensuring regulatory continuity in new designs.

The SN65C1167ENSR provides extended operating temperature range (-40°C to 85°C versus 0°C to 70°C), offering improved thermal performance for demanding applications. The transceiver configuration (2/2) provides bidirectional communication capability, exceeding the receiver-only functionality (0/2) of the SN75140P.

Substitution requires design consideration of packaging transition from through-hole 8-DIP to surface-mount 16-SOIC format. The increased pin count (16 versus 8) and additional functional capability necessitate PCB layout and schematic modifications. The SN65C1167ENSR supports RS422 and RS485 protocols, providing protocol flexibility not specified in the SN75140P documentation.

Frequently Asked Questions (FAQ)

Q: Can the SN65C1167ENSR directly replace the SN75140P without PCB modifications?

A: No. The SN65C1167ENSR uses 16-SOIC surface-mount packaging compared to the SN75140P's 8-DIP through-hole package. PCB redesign is required to accommodate the different pin configuration, pin count, and mounting technology.

Q: Are the supply voltage requirements identical between these parts?

A: Yes. Both the SN75140P and SN65C1167ENSR operate within the 4.5V to 5.5V supply voltage range, ensuring direct electrical compatibility with existing power supply designs.

Q: Does the SN65C1167ENSR meet the same regulatory compliance as the SN75140P?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, satisfying identical regulatory requirements for procurement and deployment.

Q: What is the functional difference between the 0/2 receiver configuration and the 2/2 transceiver configuration?

A: The SN75140P (0/2) provides receive-only functionality with two receiver channels. The SN65C1167ENSR (2/2) provides full-duplex transceiver capability with two driver channels and two receiver channels, enabling bidirectional communication.

Q: Is the extended operating temperature range of the SN65C1167ENSR (-40°C to 85°C) a compatibility advantage?

A: The extended temperature range of the SN65C1167ENSR provides operational capability beyond the SN75140P's 0°C to 70°C specification. This is advantageous for applications requiring wider thermal operating margins but is not required for direct functional substitution in standard temperature environments.

Q: What protocols does the SN65C1167ENSR support?

A: The SN65C1167ENSR supports RS422 and RS485 protocols. Protocol support specifications for the SN75140P are not provided in the component documentation.