SN74AS652DWR Equivalent & Substitute Parts

Part Overview

The SN74AS652DWR is a non-inverting transceiver logic IC manufactured by Texas Instruments, designed for 8-bit data bus applications with 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is housed in a 24-SOIC surface mount package.

The SN74AS652DWR is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs or component replenishment. The substitute part SN74AS652DW maintains identical electrical and mechanical specifications while offering active product status from the manufacturer.

Substiute Parts

SN74AS652DWR

Texas InstrumentsIn Stock: 1076SN74AS652DWR Datasheet

Current PartRFQ

SN74AS652DW

Texas InstrumentsIn Stock: 1021SN74AS652DW Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74AS652DWR is based on strict equivalence across all critical electrical and mechanical parameters. The substitute part SN74AS652DW is qualified as a direct replacement because it maintains:

• Identical logic function (non-inverting transceiver, 1 element, 8 bits per element)
• Identical output configuration (3-state)
• Identical electrical performance (15mA output high, 48mA output low)
• Identical supply voltage range (4.5V ~ 5.5V)
• Identical operating temperature range (0°C ~ 70°C)
• Identical package specification (24-SOIC, 0.295" width, 7.50mm)
• Identical compliance certifications (ROHS3, MSL 1, REACH Unaffected)

The primary distinction between these parts is product status and packaging format, not functional or electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS652DW is the direct equivalent substitute for the SN74AS652DWR. Selection of the substitute part is justified by:

• Active product status from Texas Instruments, ensuring continued availability and manufacturing support
• Complete electrical and mechanical equivalence across all specified parameters
• Identical compliance certifications (ROHS3, REACH Unaffected) suitable for regulated applications
• Identical MSL rating (1, Unlimited) eliminating moisture sensitivity concerns during storage and handling
• Pin-compatible 24-SOIC package enabling direct PCB integration without layout modifications

The substitute part is suitable for both new designs and replacement applications where the obsolete SN74AS652DWR was previously specified.

Frequently Asked Questions (FAQ)

Q: Can SN74AS652DW be used as a direct replacement for SN74AS652DWR in existing designs?

A: Yes. The SN74AS652DW is electrically and mechanically identical to the SN74AS652DWR. No circuit modifications, PCB layout changes, or firmware adjustments are required. The parts are pin-compatible and functionally equivalent.

Q: What is the difference between SN74AS652DWR and SN74AS652DW?

A: The primary difference is product status. The SN74AS652DWR is obsolete, while the SN74AS652DW is active. Both parts share identical electrical specifications, output characteristics, supply voltage requirements, operating temperature range, and 24-SOIC packaging.

Q: Are there packaging differences between these parts?

A: The SN74AS652DWR is supplied in standard packaging, while the SN74AS652DW is supplied in tube packaging. Both use the same 24-SOIC (0.295", 7.50mm Width) case. The packaging format does not affect electrical performance or PCB compatibility.

Q: Do these parts meet RoHS and REACH compliance requirements?

A: Yes. Both the SN74AS652DWR and SN74AS652DW are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory standards for industrial and commercial applications.

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

A: Both parts have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.