SN74AS804BDWR Equivalent & Substitute Parts

Part Overview

The SN74AS804BDWR is a NAND Gate IC featuring 6 channels with 2 inputs per channel in a 20-SOIC surface mount package, manufactured by Texas Instruments. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design support and procurement continuity. The part operates within the 74AS logic family and is ROHS3 compliant with unlimited moisture sensitivity rating.

Substiute Parts

SN74AS804BDWR

Texas InstrumentsIn Stock: 1064SN74AS804BDWR Datasheet

Current PartRFQ

SN74AS804BDW

Texas InstrumentsIn Stock: 1242SN74AS804BDW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The SN74AS804BDW qualifies as a direct substitute for the SN74AS804BDWR based on the following criteria:

Matching Parameters:

• Logic Type: NAND Gate (identical)
• Number of Circuits: 6 (identical)
• Number of Inputs: 2 (identical)
• Voltage - Supply: 4.5V ~ 5.5V (identical)
• Current - Output High, Low: 48mA, 48mA (identical)
• Input Logic Level - Low: 0.8V (identical)
• Input Logic Level - High: 2V (identical)
• Max Propagation Delay @ V, Max CL: 4ns @ 5V, 50pF (identical)
• Operating Temperature: 0°C ~ 70°C (identical)
• Package / Case: 20-SOIC (0.295", 7.50mm Width) (identical)
• Mounting Type: Surface Mount (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Moisture Sensitivity Level (MSL): 1 (Unlimited) (identical)

The primary distinction is product status: the substitute part is Active, whereas the original is Obsolete. Packaging format differs (Tube vs. standard), but this does not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS804BDW is the recommended substitute for the obsolete SN74AS804BDWR. Both parts are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters. The substitute part carries Active product status, ensuring continued availability and manufacturing support. Both components satisfy ROHS3 compliance requirements and carry equivalent moisture sensitivity ratings. The substitution presents no functional or compliance risk for direct replacement in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the SN74AS804BDW directly replace the SN74AS804BDWR in existing designs?

A: Yes. All electrical parameters, logic specifications, and package dimensions are identical. Direct substitution is supported without design modification.

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

A: The original part (SN74AS804BDWR) is classified as Obsolete, indicating discontinued manufacturing. The substitute (SN74AS804BDW) maintains Active status, ensuring ongoing availability and manufacturing support.

Q: Are there packaging considerations for this substitution?

A: Both parts use the 20-SOIC surface mount package with identical dimensions (0.295", 7.50mm Width). The substitute is supplied in Tube packaging format, which does not affect electrical or mechanical compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SN74AS804BDWR and SN74AS804BDW are ROHS3 compliant with MSL rating of 1 (Unlimited). Compliance certifications are equivalent.

Q: What are the critical electrical parameters that define substitution eligibility?

A: Supply voltage (4.5V ~ 5.5V), output current (48mA), input logic levels (0.8V low, 2V high), and propagation delay (4ns @ 5V, 50pF) must remain constant. All parameters match between the original and substitute parts.