Alternatives to Texas Instruments SN74CBT3345PWR
Texas Instruments SN74CBT3345PWR and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 SN74CBT3345PWRTexas Instruments | SN74CBT3345CPWRTexas Instruments | SN74CB3Q3345PWRTexas Instruments | +1more | |
|---|---|---|---|---|
| FFF Compatibility | Features the exact same TSSOP-20 package and standard pinout, including both Pin 1 (active-high OE) and Pin 19 (active-low /OE) control inputs.Housed in the identical 20-TSSOP (PW) footprint with matching physical package dimensions.Operates across the same 4.5V to 5.5V supply voltage range, providing matching low on-resistance switch performance. | Features the identical 20-pin pinout configuration with dual active-high OE (Pin 1) and active-low /OE (Pin 19) control lines.Packaged in the identical TSSOP-20 (PW) outline with matching physical footprint.Operates on a lower supply voltage of 2.3V to 3.6V, compared to the original 4.5V to 5.5V, making it suitable only for systems with a 3.3V power rail. | ||
 AI Summary | SN74CBT3345PWR by Texas Instruments: Bus Switch 8 x 1:1 20-TSSOP. | The SN74CBT3345CPWR is the direct same-family upgraded 'C' revision of the obsolete SN74CBT3345PWR. It is an active, pin-for-pin drop-in replacement that retains the identical dual-control (OE and /OE) logic layout while adding Ioff support for partial-power-down applications.
| The SN74CB3Q3345PWR is a high-bandwidth, low-voltage alternative utilizing an integrated charge pump to keep switch on-resistance low. It is physically and pinout-compatible, but is limited to a 2.3V to 3.6V supply range, though its I/O lines remain 5V tolerant.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Bus Switch 8 x 1:1 20-TSSOP | Bus Switch 8 x 1:1 20-TSSOP | Bus Switch 8 x 1:1 20-TSSOP | |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | |
| Type | Logic | Logic | Logic | |
| Datasheet | Open | Open | Open | |
| Lead Time | 20 weeks | 9 weeks | 9 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0090 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Type | Bus Switch | - | - | |
| Circuit | 8 x 1:1 | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) | - | - | |
| Independent Circuits | 1 | - | - | |
| Voltage Supply Source | Single Supply | - | - | |
| Supplier Device Package | 20-TSSOP | - | - |
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Frequently asked questions
Yes. The Texas Instruments SN74CBT3345PWR is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the Texas Instruments SN74CBT3345PWR are the SN74CBT3345CPWR (Texas Instruments) and the SN74CB3Q3345PWR (Texas Instruments), out of 3 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the SN74CBT3345PWR are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The SN74CBT3345PWR (Texas Instruments) is a part in the Logic category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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