CBT3244AD,112 Bus Switch 4x1:1 Logic IC Equivalent & Substitute Parts

Part Overview

The CBT3244AD,112 is a 4x1:1 bus switch logic integrated circuit manufactured by Nexperia USA Inc. in a 20-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates with single supply voltage and is designed for bus switching applications requiring independent circuit control.

Substiute Parts

CBT3244AD,112

Nexperia USA Inc.In Stock: 1034CBT3244AD,112 Datasheet

Current PartRFQ

SN74CBT3244CDW

Texas InstrumentsIn Stock: 2237SN74CBT3244CDW Datasheet

SimilarRFQ

SN74CBT3244CDWR

Texas InstrumentsIn Stock: 3009SN74CBT3244CDWR Datasheet

SimilarRFQ

SN74CBT3244DWR

Texas InstrumentsIn Stock: 2725SN74CBT3244DWR Datasheet

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SN74CBT3244DW

Texas InstrumentsIn Stock: 1984SN74CBT3244DW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CBT3244AD,112 is determined by the following critical parameters that must remain consistent:

• Circuit configuration: 4 x 1:1 topology with 2 independent circuits
• Package type: 20-SOIC surface mount form factor (0.295", 7.50mm width)
• Voltage supply range: 4.5V minimum to 5.5V maximum
• Operating temperature range: -40°C to 85°C
• RoHS3 compliance and MSL 1 rating
• Series classification: 74CBT logic family

Substitute parts are grouped into two categories based on product status and packaging configuration:

Active Status Substitutes: Texas Instruments SN74CBT3244CDW and SN74CBT3244CDWR maintain full production status with expanded voltage supply tolerance (4V minimum).

Last Time Buy Substitutes: Texas Instruments SN74CBT3244DWR and SN74CBT3244DW are available in limited quantities as last-time-buy inventory with voltage supply matching the original specification (4.5V minimum).

Parameter Comparison

Engineering Selection Recommendations

For new designs and production continuity, the Texas Instruments SN74CBT3244CDW or SN74CBT3244CDWR are the primary substitutes. Both parts maintain active product status, ensuring long-term availability and manufacturer support. The SN74CBT3244CDWR in Tape & Reel packaging is preferred for high-volume production environments, while the SN74CBT3244CDW in Tube packaging suits lower-volume applications.

The SN74CBT3244CDW and SN74CBT3244CDWR offer expanded voltage supply tolerance (4V minimum versus 4.5V), providing additional design margin in applications with lower supply voltages.

For designs with strict voltage supply requirements matching the original specification (4.5V minimum), the SN74CBT3244DWR and SN74CBT3244DW are available as last-time-buy alternatives. These parts maintain identical electrical and thermal specifications but with limited production quantities.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical package geometry, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can SN74CBT3244CDW directly replace CBT3244AD,112 without PCB modifications?

A: Yes. Both parts use identical 20-SOIC (0.295", 7.50mm width) surface mount packages with matching pin configurations. No PCB layout changes are required for direct substitution.

Q: What is the difference between SN74CBT3244CDW and SN74CBT3244CDWR?

A: The primary difference is packaging format. SN74CBT3244CDW is supplied in Tube packaging, while SN74CBT3244CDWR is supplied in Tape & Reel (TR) format. Both parts are electrically identical. Tape & Reel packaging is standard for automated assembly processes, while Tube packaging is typical for manual or lower-volume handling.

Q: Why do some substitutes have 4V minimum supply voltage while the original specifies 4.5V?

A: The SN74CBT3244CDW and SN74CBT3244CDWR from Texas Instruments support a wider voltage supply range (4V ~ 5.5V) compared to the Nexperia original (4.5V ~ 5.5V). This expanded range provides additional design flexibility and does not affect compatibility with designs operating at 4.5V or higher.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory specifications of the original CBT3244AD,112.

Q: What is the difference between "Active" and "Last Time Buy" product status?

A: Active status indicates ongoing production and long-term availability from the manufacturer. Last Time Buy status indicates limited production quantities with a defined end-of-life date. For new designs, Active status parts (SN74CBT3244CDW, SN74CBT3244CDWR) are recommended to ensure sustained supply.

Q: Can I use SN74CBT3244DW or SN74CBT3244DWR if I need exact voltage specification matching?

A: Yes. Both SN74CBT3244DW and SN74CBT3244DWR maintain the original 4.5V ~ 5.5V voltage supply specification. However, these parts are available only as last-time-buy inventory with limited quantities. For new production, the active-status alternatives with 4V ~ 5.5V range are recommended.