SN74AS641DWRG4 Equivalent & Substitute Parts

Part Overview

The SN74AS641DWRG4 is a transceiver integrated circuit manufactured by Texas Instruments, classified as a Logic component in the 74AS series. This device functions as a non-inverting transceiver with 1 element and 8 bits per element, featuring open collector output configuration. The part is currently listed with obsolete product status, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

SN74AS641DWRG4

Texas InstrumentsIn Stock: 1174SN74AS641DWRG4 Datasheet

Current PartRFQ

SN74AS641DW

Texas InstrumentsIn Stock: 1063SN74AS641DW Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74AS641DWRG4 is determined by strict equivalence across the following critical parameters:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 1
• Number of Bits per Element: 8
• Output Type: Open Collector
• Current - Output Low: 64mA
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: 0°C ~ 70°C (TA)
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

The SN74AS641DW meets all specified electrical and mechanical parameters, establishing it as a direct functional equivalent. The primary distinction between these parts is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS641DW is the direct substitute for the SN74AS641DWRG4. Both parts share identical electrical specifications, mechanical dimensions, and compliance certifications. The SN74AS641DW maintains active product status with Texas Instruments, ensuring continued availability and manufacturing support. Both components satisfy ROHS3 compliance requirements and carry MSL Level 1 classification, indicating no moisture sensitivity constraints during storage and handling.

Selection of the SN74AS641DW over the obsolete SN74AS641DWRG4 provides access to current manufacturing processes and supply chain continuity. The packaging format difference (Tube versus Reel) does not affect functional performance and represents a procurement consideration only.

Frequently Asked Questions (FAQ)

Q: Are the SN74AS641DWRG4 and SN74AS641DW electrically identical?

A: Yes. Both parts are specified with identical logic type, bit configuration, output characteristics, supply voltage range, operating temperature range, and output current ratings. They are direct functional equivalents.

Q: What is the significance of the product status difference?

A: The SN74AS641DWRG4 is classified as obsolete, indicating Texas Instruments has discontinued active manufacturing and support. The SN74AS641DW maintains active status, ensuring ongoing availability from authorized distributors and manufacturing support from the manufacturer.

Q: Does the packaging format difference affect circuit performance?

A: No. The packaging format difference (Reel versus Tube) is a supply chain and handling consideration only. Both formats contain identical components in the same 20-SOIC package configuration. Functional performance and electrical characteristics remain unchanged.

Q: Are both parts RoHS compliant?

A: Yes. Both the SN74AS641DWRG4 and SN74AS641DW are ROHS3 compliant and carry MSL Level 1 classification, meeting current environmental and reliability standards.

Q: Can the SN74AS641DW be used as a direct replacement in existing designs?

A: Yes. The SN74AS641DW is a direct substitute with identical electrical and mechanical specifications. No circuit modifications or design changes are required for substitution.