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Alternatives to Texas Instruments SN74CBT3345CPWR

Texas Instruments SN74CBT3345CPWR and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

SN74CBT3345CPWR compared against its qualified second sources
SN74CBT3345CPWRTexas InstrumentsSN74CBT3345CPWTexas InstrumentsSN74CBT3245CPWRTexas Instruments+1more
FFF CompatibilityShares the identical TSSOP-20 footprint and exact pin-for-pin signal assignment, including dual OE/ active-low OE controls.Identical 20-TSSOP package dimensions, lead pitch, and package height.Utilizes the exact same silicon die, offering identical RDS(on), propagation delays, and electrical characteristics.Pin 19 serves as /OE on both; however, Pin 1 is No Connection (NC) on this part, whereas the queried part has an active-high OE on Pin 1.Identical 20-TSSOP package dimensions, lead pitch, and mounting style.Operates over a comparable supply voltage range of 4V to 5.5V with identical low propagation delay and 5-ohm switch resistance.
AI Summary

SN74CBT3345CPWR by Texas Instruments: Bus Switch 8 x 1:1 20-TSSOP.

This is the exact same high-speed FET bus switch IC, shipped in Tube packaging rather than Tape & Reel. It is a direct physical and electrical drop-in replacement with zero modifications required.

  • Identical electrical and physical drop-in substitute
  • Same 4.5V to 5.5V supply voltage and high-speed FET performance
  • No PCB land pattern or circuit schematic modifications required
  • Shipped in Tubes rather than Tape & Reel, which may require adjustment of pick-and-place feeders.

This is a sibling octal bus switch in the same TSSOP-20 package. It is functionally compatible if the design only uses the active-low enable control on Pin 19, since Pin 1 is an unused NC terminal instead of an active-high OE.

  • Same high-speed FET performance and low ON-state resistance
  • Identical TSSOP-20 package footprint fits the exact same PCB landing pads
  • Active and widely available from distributors
  • Lacks the active-high OE control pin (Pin 1 is NC), which will prevent proper operation if the circuit actively relies on Pin 1 for dual-enable logic.
Lifecycle StatusActiveActiveUnknown
Market AvailabilityIn stockIn stockUnknown
REACHREACHREACHUnknown
RoHSRoHSRoHSUnknown
DescriptionBus Switch 8 x 1:1 20-TSSOPBus Switch 8 x 1:1 20-TSSOPThis is a sibling octal bus switch in the same TSSOP-20 package. It is functionally compatible if the design only uses the active-low enable
ManufacturerTexas InstrumentsTexas InstrumentsTexas Instruments
TypeLogicLogicComponent
DatasheetOpenOpenN/A
Lead Time9 weeks9 weeksUnknown
Country of Origin---
Export Control Class NumberEAR99EAR99EAR99
HTSUS Code8542.39.0090--
Moisture Sensitivity Level1 (Unlimited)--
TypeBus Switch--
Circuit8 x 1:1--
Mounting TypeSurface Mount--
Package / Case20-TSSOP (0.173", 4.40mm Width)--
Independent Circuits1--
Voltage Supply SourceSingle Supply--
Supplier Device Package20-TSSOP--

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Frequently asked questions

Yes. The Texas Instruments SN74CBT3345CPWR is active and in production. The parts listed here are qualified equivalents if you need a second source or better availability.

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