Alternatives to Texas Instruments TCA9546APWR
Texas Instruments TCA9546APWR and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
Equivalent and substitute parts for Texas Instruments TCA9546APWR
 TCA9546APWRTexas Instruments |  PI4MSD5V9546ALEXDiodes Incorporated |  PCA9546APWRTexas Instruments | +2more | |
|---|---|---|---|---|
| FFF Compatibility | Verified 16-TSSOP package with identical pin assignments (Pins 1-16 map exactly to the same functions including A0-A2, RESET, SDA/SCL, and SC0/SD0 to SC3/SD3).Standard 16-TSSOP package with identical outer and pitch dimensions.Matches all primary electrical specifications, clock frequency, active-low reset, and the wide 1.65V to 5.5V operating voltage. | Identical 16-TSSOP pinout mapping (verified pin-by-pin).Standard 16-TSSOP package with the same dimensions.Supply voltage range is narrower (2.3V to 5.5V) compared to the TCA version (1.65V to 5.5V). | ||
 AI Summary | TCA9546APWR by Texas Instruments: Bus Switch 2 x 1:4 16-TSSOP. | This is a highly reliable, wide-voltage drop-in replacement from Diodes Inc. It matches the original part's electrical limits, including the low-voltage 1.65V minimum, making it suitable for systems powered by a 1.8V rail.
| This is Texas Instruments' previous-generation equivalent. While it is pinout-compatible and physically identical, its supply voltage (VCC) must be at least 2.3V, so it is incompatible in designs where VCC is supplied by a 1.8V rail.
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| Lifecycle Status | Active | Active | Active | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 TCA9555PWRTexas Instruments | In stock | Active | 6Alternatives availableSee Alternatives |
 PCA9546APW,112NXP | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 PCA9557PWRTexas Instruments | In stock | Active | 3Alternatives availableSee Alternatives |
 AD9754ARUAnalog Devices | Non-stock | Obsolete | 4Alternatives availableSee Alternatives |
| PCA9517ADPNXP | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
| TPS54615PWPRG4Texas Instruments | Non-stock | Obsolete | 3Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Texas Instruments TCA9546APWR is active and in production. The parts listed here are qualified equivalents if you need a second source or better availability.
The closest qualified second sources for the Texas Instruments TCA9546APWR are the PI4MSD5V9546ALEX (Diodes Incorporated) and the PCA9546APWR (Texas Instruments), out of 4 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 TCA9546APWR 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 TCA9546APWR (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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