Alternatives to Texas Instruments TCA9555PWR
Texas Instruments TCA9555PWR and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 TCA9555PWRTexas Instruments |  CAT9555YI-T2onsemi |  PCA9555PW,118NXP USA Inc. | +4more | |
|---|---|---|---|---|
| FFF Compatibility | The physical footprint and TSSOP-24 pinout assignment are identical.Both devices are housed in a standard 24-TSSOP package with identical outer dimensions.Supply voltage range is narrower at 2.3V to 5.5V (compared to 1.65V to 5.5V for the TCA9555). | Shares the identical 24-pin TSSOP layout and pin assignments.Packaged in a standard 24-TSSOP housing.Minimum supply voltage limit is 2.3V instead of 1.65V. | ||
 AI Summary | TCA9555PWR by Texas Instruments: I/O Expander 16 I2C, SMBus 400 kHz 24-TSSOP. | A highly reliable third-party alternative that matches the physical footprint and software registers of the target. However, it cannot be used in ultra-low voltage designs below 2.3V (such as 1.8V logic rails).
| The PCA9555 is the predecessor series to the TCA9555 and is a great drop-in alternative for projects operating at 2.5V, 3.3V, or 5V. It has a higher minimum operating voltage of 2.3V.
| |
| Lifecycle Status | Active | Active | Active | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | I/O Expander 16 I2C, SMBus 400 kHz 24-TSSOP | I/O Expander 16 I2C, SMBus 400 kHz 24-TSSOP | I/O Expander 16 I2C, SMBus 400 kHz 24-TSSOP | |
| Manufacturer | Texas Instruments | onsemi | NXP USA Inc. | |
| Type | Interface | Interface | Interface | |
| Datasheet | Open | Open | Open | |
| Lead Time | 16 weeks | 34 weeks | 30 weeks | |
| Country of Origin | CN, PH, US, DE | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0070 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Features | POR | - | - | |
| Interface | I2C, SMBus | - | - | |
| Output Type | Push-Pull | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Number of I/O | 16 | - | - | |
| Package / Case | 24-TSSOP (0.173", 4.40mm Width) | - | - | |
| Clock Frequency | 400 kHz | - | - | |
| Interrupt Output | Yes | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 TCA9546APWRTexas Instruments | In stock | Active | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Texas Instruments TCA9555PWR 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 TCA9555PWR are the CAT9555YI-T2 (onsemi) and the PCA9555PW,118 (NXP USA Inc.), out of 6 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 TCA9555PWR 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 TCA9555PWR (Texas Instruments) is a part in the Interface category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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