SN74LS641DWR Equivalent & Substitute Parts

Part Overview

The SN74LS641DWR is a non-inverting transceiver IC manufactured by Texas Instruments, designed for 8-bit data transmission with open collector output configuration. This component operates within the 4.75V to 5.25V supply voltage range and is housed in a 20-SOIC surface mount package.

The SN74LS641DWR carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this transceiver architecture.

Substiute Parts

SN74LS641DWR

Texas InstrumentsIn Stock: 1184SN74LS641DWR Datasheet

Current PartRFQ

SN74LS641-1DWR

Texas InstrumentsIn Stock: 846SN74LS641-1DWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LS641DWR is determined by the following critical parameters:

• Logic Architecture: Transceiver, Non-Inverting configuration with 1 element and 8 bits per element
• Electrical Specifications: Supply voltage range 4.75V ~ 5.25V and operating temperature 0°C ~ 70°C
• Output Configuration: Open collector output type
• Package Compatibility: 20-SOIC surface mount package with identical physical dimensions
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The SN74LS641-1DWR qualifies as a direct substitute based on matching all critical parameters within the allowed electrical and mechanical specifications for this product category.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS641-1DWR is functionally equivalent to the SN74LS641DWR for applications requiring non-inverting transceiver operation with 8-bit data handling and open collector output. Both components maintain identical electrical specifications across supply voltage and operating temperature ranges.

The SN74LS641-1DWR offers the advantage of active product status, ensuring continued availability and manufacturing support. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current production environments.

The SN74LS641-1DWR is supplied in Tape & Reel packaging, suitable for automated assembly processes. The main part SN74LS641DWR is available in standard packaging configuration.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS641-1DWR directly replace the SN74LS641DWR in existing designs?

A: Yes. Both components share identical logic architecture, electrical specifications, and package dimensions. The SN74LS641-1DWR is a direct functional equivalent suitable for board-level substitution without design modification.

Q: What is the significance of the output current difference between these parts?

A: The SN74LS641-1DWR provides 48mA output low current compared to 24mA for the SN74LS641DWR. This represents enhanced current drive capability while maintaining full compatibility with the same electrical operating range and package footprint.

Q: Are there packaging differences between these parts?

A: The SN74LS641DWR uses standard packaging, while the SN74LS641-1DWR is supplied in Tape & Reel format. Both use the identical 20-SOIC package with matching physical dimensions and pin configuration.

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both the SN74LS641DWR and SN74LS641-1DWR are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: Why is the SN74LS641-1DWR listed as active while the main part is obsolete?

A: Product status reflects current manufacturing and distribution availability. The SN74LS641-1DWR maintains active production status, ensuring supply chain continuity for new designs and ongoing production support.