74FST6800DWR2 Equivalent & Substitute Parts

Part Overview

The 74FST6800DWR2 is a bus switch IC with 10 x 1:1 circuit configuration, manufactured by onsemi in a 24-SOIC surface mount package. This component is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations. The part operates across a single supply voltage range of 4V to 5.5V with an operating temperature range of -40°C to 85°C, serving applications requiring reliable bus switching functionality in logic circuits.

Substiute Parts

74FST6800DWR2

onsemiIn Stock: 84274FST6800DWR2 Datasheet

Current PartRFQ

SN74CBT6800CDWR

Texas InstrumentsIn Stock: 749SN74CBT6800CDWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74FST6800DWR2 is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: 10 x 1:1 topology must be maintained
• Package Type: 24-SOIC form factor with identical pin count and pitch
• Voltage Supply Range: 4V ~ 5.5V single supply operation
• Operating Temperature Range: -40°C ~ 85°C compatibility
• Mounting Type: Surface mount technology
• Functional Category: Bus switch logic IC

The SN74CBT6800CDWR from Texas Instruments meets all these criteria, providing functional and mechanical equivalence while offering improved product status and compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SN74CBT6800CDWR is the qualified substitute for the obsolete 74FST6800DWR2. Selection of this alternative is supported by:

• Functional Equivalence: Identical circuit configuration, voltage specifications, and temperature operating range
• Mechanical Compatibility: Matching 24-SOIC package dimensions and pin configuration enable direct board-level substitution
• Product Status: Active manufacturing status ensures long-term availability and supply chain stability
• Regulatory Compliance: ROHS3 compliance status provides advantage over the non-compliant original part, supporting modern procurement and environmental requirements
• Certification Alignment: Both parts share identical REACH and ECCN classifications, maintaining regulatory consistency

Frequently Asked Questions (FAQ)

Q: Can the SN74CBT6800CDWR be used as a direct replacement for the 74FST6800DWR2?

A: Yes. Both parts share identical electrical specifications (4V ~ 5.5V supply, -40°C ~ 85°C operating range), circuit configuration (10 x 1:1), and mechanical packaging (24-SOIC). Pin-for-pin compatibility is confirmed.

Q: What is the primary advantage of switching to the SN74CBT6800CDWR?

A: The Texas Instruments part is in active production status, whereas the onsemi part is obsolete. Additionally, the SN74CBT6800CDWR meets ROHS3 compliance requirements, addressing environmental and procurement standards.

Q: Are there any packaging differences between these parts?

A: No. Both components use identical 24-SOIC surface mount packaging with 0.295" (7.50mm) width. No PCB layout modifications are required.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both the 74FST6800DWR2 and SN74CBT6800CDWR carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity constraints during storage and handling.

Q: Are there supply voltage or temperature range limitations when substituting?

A: No. The voltage supply range (4V ~ 5.5V) and operating temperature range (-40°C ~ 85°C) are identical between both parts. System design parameters remain unchanged.