CBT3244APW,112 Equivalent & Substitute Parts

Part Overview

The CBT3244APW,112 is a 4 x 1:1 bus switch logic IC manufactured by Nexperia USA Inc., housed in a 20-TSSOP package. This component functions as a high-speed multiplexer for digital signal routing in logic applications. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

CBT3244APW,112

Nexperia USA Inc.In Stock: 913CBT3244APW,112 Datasheet

Current PartRFQ

SN74CBT3244CDBQR

Texas InstrumentsIn Stock: 3471SN74CBT3244CDBQR Datasheet

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SN74CBT3244CDGVR

Texas InstrumentsIn Stock: 2842SN74CBT3244CDGVR Datasheet

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SN74CBT3244CPW

Texas InstrumentsIn Stock: 1416SN74CBT3244CPW Datasheet

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SN74CBT3244CPWR

Texas InstrumentsIn Stock: 2244SN74CBT3244CPWR Datasheet

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SN74CBT3244DBQR

Texas InstrumentsIn Stock: 3335SN74CBT3244DBQR Datasheet

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SN74CBT3244DBR

Texas InstrumentsIn Stock: 2437SN74CBT3244DBR Datasheet

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SN74CBT3244DGVR

Texas InstrumentsIn Stock: 4992SN74CBT3244DGVR Datasheet

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SN74CBT3244PWR

Texas InstrumentsIn Stock: 22454SN74CBT3244PWR Datasheet

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SN74CBT3244PW

Texas InstrumentsIn Stock: 2164SN74CBT3244PW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CBT3244APW,112 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Circuit configuration: 4 x 1:1 bus switch topology
• Independent circuits: 2
• Voltage supply range: 4.5V ~ 5.5V (or compatible overlap)
• Operating temperature range: -40°C ~ 85°C
• Mounting type: Surface Mount
• RoHS3 compliance
• Base product number: 74CBT3244

Package Compatibility Considerations: Substitutes are grouped by package type. The original part uses 20-TSSOP (0.173", 4.40mm Width). Alternatives include 20-SSOP and 20-TVSOP variants, which differ in physical dimensions but maintain identical electrical functionality and pin configuration.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation (Identical Package): SN74CBT3244CPWR is the preferred substitute. It maintains the 20-TSSOP package footprint identical to the original CBT3244APW,112, operates within compatible voltage and temperature ranges, and carries Active product status with ROHS3 compliance. This part is available in Tape & Reel packaging suitable for production environments.

Alternative with Active Status (Same Package Family): SN74CBT3244CPW provides identical electrical and mechanical specifications to SN74CBT3244CPWR but is supplied in Tube packaging, suitable for lower-volume applications or manual assembly processes.

Extended Voltage Range Option: SN74CBT3244PW operates at the original voltage specification (4.5V ~ 5.5V) and maintains the 20-TSSOP package, though it carries Last Time Buy status. This part is suitable for designs requiring exact voltage matching to the original specification.

Package Variant Considerations: Parts designated with TVSOP or TFSOP package codes (SN74CBT3244CDGVR, SN74CBT3244DGVR) maintain identical 0.173" width and 4.40mm dimensions but use different lead configurations. These are electrically equivalent but require PCB layout verification before implementation.

SSOP Package Variants: SN74CBT3244CDBQR and SN74CBT3244DBQR use 20-SSOP packaging with reduced width (0.154" or 0.209" respectively). These require PCB redesign and are suitable only when board space constraints necessitate package change.

Frequently Asked Questions (FAQ)

Q: Can I use SN74CBT3244CPWR as a direct replacement for CBT3244APW,112? A: Yes. Both parts share identical 20-TSSOP package dimensions (0.173", 4.40mm Width), circuit configuration (4 x 1:1), and operating parameters (-40°C ~ 85°C, 4V ~ 5.5V supply range). The primary difference is manufacturer (Texas Instruments vs. Nexperia) and product status (Active vs. Obsolete).

Q: What is the difference between TSSOP and SSOP packages? A: TSSOP (Thin Shrink Small Outline Package) and SSOP (Shrink Small Outline Package) differ in body width and lead pitch. TSSOP maintains 0.173" width, while SSOP variants range from 0.154" to 0.209". Pin count and electrical function remain identical, but PCB footprints are not interchangeable without layout modification.

Q: Does the voltage supply range difference (4V vs. 4.5V minimum) affect compatibility? A: The original CBT3244APW,112 specifies 4.5V ~ 5.5V. Substitutes with 4V ~ 5.5V range provide extended lower-voltage operation. If your design operates at 4V, only parts with 4V minimum specification are suitable. If your design operates at 4.5V or higher, both specifications are compatible.

Q: What does "Last Time Buy" product status mean? A: Last Time Buy indicates the manufacturer will no longer produce the part after a specified date. Existing inventory may be available, but long-term procurement is not guaranteed. For new designs, Active status parts (SN74CBT3244CPWR, SN74CBT3244CPW) are recommended.

Q: Are there differences in moisture sensitivity between substitute parts? A: Most substitutes carry MSL 1 (Unlimited moisture sensitivity level), identical to the original. SN74CBT3244CDBQR carries MSL 2 (1 Year), requiring controlled storage conditions. For standard manufacturing environments, MSL 1 parts are preferred.

Q: Can I use TVSOP/TFSOP variants if my PCB is designed for TSSOP? A: No. Although TVSOP and TFSOP maintain identical body width (0.173", 4.40mm), lead configurations differ. PCB footprints are not compatible without layout redesign. Verify footprint compatibility before substitution.

Q: What packaging options are available for production quantities? A: For high-volume production, Tape & Reel (TR) packaging is standard. SN74CBT3244CPWR is supplied in TR format. Tube packaging (SN74CBT3244CPW) is suitable for lower volumes or manual assembly. Cut Tape & Digi-Reel options provide intermediate quantities.