SN65HVD08P Equivalent & Substitute Parts

Part Overview

The SN65HVD08P is a half-duplex RS422/RS485 transceiver IC manufactured by Texas Instruments, housed in an 8-pin DIP package for through-hole mounting. This part is classified as obsolete, though 5,795 units remain available in new original stock. The obsolete status necessitates identification of active equivalent parts to ensure long-term design continuity and supply chain reliability for new production runs and future maintenance requirements.

Substiute Parts

SN65HVD08P

Texas InstrumentsIn Stock: 5817SN65HVD08P Datasheet

Current PartRFQ

SN65HVD08DR

Texas InstrumentsIn Stock: 20416SN65HVD08DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN65HVD08P is determined by strict equivalence in the following electrical and functional parameters:

• Protocol compatibility: RS422/RS485 half-duplex operation
• Driver/Receiver configuration: 1/1 topology
• Receiver hysteresis: 35 mV
• Supply voltage range: 3V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Base product number: 65HVD08

The SN65HVD08DR qualifies as a direct functional equivalent, sharing identical electrical specifications and the same base product number. The primary difference is packaging format: the SN65HVD08DR uses surface-mount 8-SOIC technology instead of through-hole 8-DIP, and carries active product status with higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The SN65HVD08DR is the manufacturer-recommended substitute for the obsolete SN65HVD08P. Both parts maintain identical electrical specifications, supply voltage ranges, operating temperature limits, and protocol support. Both achieve ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs.

Selection between these parts depends on PCB assembly methodology. The SN65HVD08P requires through-hole assembly and is suitable for legacy designs or applications requiring manual insertion. The SN65HVD08DR employs surface-mount technology and is appropriate for modern automated assembly processes. The SN65HVD08DR carries active product status with significantly higher inventory availability (20,400 units), ensuring supply continuity for production and future procurement.

Frequently Asked Questions (FAQ)

Q: Can the SN65HVD08DR directly replace the SN65HVD08P in existing designs?

A: Electrical and functional compatibility is complete. PCB layout modification is required due to package format differences: 8-DIP through-hole versus 8-SOIC surface-mount. Pin-to-pin electrical functionality remains identical.

Q: What is the primary reason for substitution?

A: The SN65HVD08P is classified as obsolete. The SN65HVD08DR provides equivalent functionality with active product status and higher inventory availability, ensuring long-term supply reliability.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant and REACH unaffected. No compliance disadvantage exists in selecting the SN65HVD08DR.

Q: What assembly process changes are required?

A: The SN65HVD08P uses through-hole mounting suitable for manual or wave soldering. The SN65HVD08DR uses surface-mount technology requiring reflow soldering and SMD assembly equipment. PCB footprint design must be updated accordingly.

Q: Are the electrical specifications identical?

A: Yes. Supply voltage range (3V ~ 5.5V), operating temperature range (-40°C ~ 85°C), receiver hysteresis (35 mV), and RS422/RS485 protocol support are identical between both parts.