SN74ALS641ADWR Equivalent & Substitute Parts

Part Overview

The SN74ALS641ADWR is a transceiver logic integrated circuit manufactured by Texas Instruments, classified within the 74ALS series. This non-inverting transceiver features 1 element with 8 bits per element and open collector output configuration. The device operates at supply voltages between 4.5V and 5.5V with an operating temperature range of 0°C to 70°C. The component is housed in a 20-SOIC surface mount package and maintains active product status with full RoHS3 compliance. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain compatibility across manufacturing batches and procurement cycles.

Substiute Parts

SN74ALS641ADWR

Texas InstrumentsIn Stock: 1162SN74ALS641ADWR Datasheet

Current PartRFQ

SN74ALS641A-1DWR

Texas InstrumentsIn Stock: 2997SN74ALS641A-1DWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ALS641ADWR is determined by strict equivalence across the following critical parameters: logic type (transceiver, non-inverting), number of elements (1), bits per element (8), output configuration (open collector), output current specification (24mA low), supply voltage range (4.5V ~ 5.5V), operating temperature range (0°C ~ 70°C), package type (20-SOIC), and compliance certifications (RoHS3, REACH Unaffected). Parts meeting all these criteria are classified as parametric equivalents and may be used interchangeably in circuit designs without modification to PCB layout or electrical connections.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS641A-1DWR is a parametric equivalent to the SN74ALS641ADWR and qualifies for direct substitution based on identical electrical specifications, package configuration, and compliance certifications. Both parts maintain active product status from Texas Instruments and carry equivalent RoHS3 and REACH compliance documentation. Selection between these parts may be based on inventory availability, lead time, or procurement source without requiring circuit redesign or functional validation.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS641A-1DWR replace the SN74ALS641ADWR in existing designs?

A: Yes. The SN74ALS641A-1DWR is a parametric equivalent with identical logic type, element configuration, output characteristics, supply voltage range, operating temperature range, and package specification. Direct substitution is supported without PCB modification.

Q: Are there differences in the part numbers that affect compatibility?

A: The part numbers differ only in the suffix designation (-1DWR versus ADWR). Both parts are manufactured by Texas Instruments within the 74ALS series and meet the same electrical and mechanical specifications required for this application.

Q: What packaging format is used for both parts?

A: Both the SN74ALS641ADWR and SN74ALS641A-1DWR are supplied in Tape & Reel (TR) format with a 20-SOIC surface mount package measuring 0.295 inches (7.50mm) in width.

Q: Are both parts RoHS compliant?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: What is the moisture sensitivity level for these parts?

A: Both parts carry a Moisture Sensitivity Level (MSL) rating of 1, indicating unlimited shelf life without moisture control requirements during storage and handling.