SN74CBT3383CPWR Equivalent & Substitute Parts

Part Overview

The SN74CBT3383CPWR is a Bus FET Exchange Switch configured as 5 x 2:2, manufactured by Texas Instruments in a 24-TSSOP surface mount package. This logic IC operates with a single supply voltage of 4.5V to 5.5V and supports operating temperatures from -40°C to 85°C. The part is currently in Active product status with 2588 units available in stock. Substitute parts are necessary when the primary part reaches end-of-life status, when packaging format requirements differ, or when alternative qualified sources are required for supply chain continuity.

Substiute Parts

SN74CBT3383CPWR

Texas InstrumentsIn Stock: 2618SN74CBT3383CPWR Datasheet

Current PartRFQ

SN74CBT3383PWR

Texas InstrumentsIn Stock: 3239SN74CBT3383PWR Datasheet

Parametric EquivalentRFQ

QS3383QG

Renesas Electronics CorporationIn Stock: 1442QS3383QG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74CBT3383CPWR is determined by the following critical parameters:

• Circuit configuration (5 x 2:2 topology)
• Voltage supply range (4.5V ~ 5.5V or compatible range)
• Operating temperature range (-40°C ~ 85°C)
• Package type (24-TSSOP or equivalent pinout package)
• Mounting type (Surface Mount)
• RoHS compliance status

The identified substitute parts maintain functional equivalence through identical or compatible circuit configurations and electrical specifications. Packaging differences are noted where they occur, as they affect board-level integration but do not alter electrical performance when pin assignments remain consistent.

Parameter Comparison

Engineering Selection Recommendations

SN74CBT3383PWR serves as a parametric equivalent to the SN74CBT3383CPWR, maintaining identical electrical specifications and package dimensions while differing only in packaging format (Cut Tape versus Tape & Reel). This substitute is suitable for applications where packaging format flexibility is acceptable. However, the part carries Last Time Buy status, indicating limited future availability.

QS3383QG, manufactured by Renesas Electronics Corporation, provides functional equivalence with the same 5 x 2:2 circuit configuration and operating temperature range. The voltage supply range is narrower (4.75V ~ 5.25V versus 4.5V ~ 5.5V), which may restrict application in systems requiring the full 4.5V minimum. The package footprint differs (24-SSOP at 0.154" width versus 24-TSSOP at 0.173" width), requiring PCB layout modification. QS3383QG maintains Active product status with ROHS3 compliance, supporting long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can SN74CBT3383PWR be used as a direct replacement for SN74CBT3383CPWR?

A: Yes. Both parts share identical electrical specifications, circuit configuration, and package dimensions. The difference is packaging format: SN74CBT3383CPWR is supplied in Tape & Reel format while SN74CBT3383PWR is supplied in Cut Tape format. Selection depends on assembly process requirements and inventory management practices.

Q: What are the limitations of using QS3383QG as a substitute?

A: QS3383QG has a narrower voltage supply range (4.75V ~ 5.25V) compared to the SN74CBT3383CPWR (4.5V ~ 5.5V). Applications requiring operation at 4.5V minimum supply voltage cannot use this substitute. Additionally, the package footprint is smaller (24-SSOP at 0.154" width), requiring PCB redesign and re-qualification.

Q: Why is SN74CBT3383PWR marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has announced end-of-life for this part number. New orders may still be accepted for a limited period, but production will cease. For long-term supply security, migration to an Active status part such as QS3383QG is recommended.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SN74CBT3383CPWR, SN74CBT3383PWR, and QS3383QG all carry ROHS3 Compliant status, meeting environmental and regulatory requirements for electronic components.

Q: What is the impact of package width difference between 24-TSSOP and 24-SSOP?

A: The 24-TSSOP package is 0.173" wide while the 24-SSOP package is 0.154" wide. This difference affects PCB trace routing, component spacing, and thermal management layout. Designs using QS3383QG require PCB layout modification and must be re-validated for signal integrity and thermal performance.