PCA9555DWR vs PCA9539DW Comparison
Detailed side-by-side comparison of PCA9555DWR by Texas Instruments and PCA9539DW by Texas Instruments. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | PCA9555DWR | PCA9539DW |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | Active | Active |
| Device Type | 16-bit I2C/SMBus I/O expander | — |
| Supply Voltage Range | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| I/O Port Count | 16 bits | — |
| Port Organization | 2 x 8-bit ports | — |
| Bus Interface | I2C/SMBus | — |
| Maximum Bus Frequency | 400 kHz | — |
| Interrupt Output | Active-low, open-drain | — |
| Weak Pull-up Registers | Configurable | — |
| Configuration Registers | Input/output, polarity and port configuration | Yes |
| Output Drive | Push-pull outputs | — |
| Operating Temperature Range | -40°C to +85°C | — |
| Package | 24-pin SOIC (DW) | 24-pin SOIC (DW) |
| Package Type | SOIC | — |
| Pin Count | 24 pins | — |
| Mounting Type | Surface mount | Surface Mount |
| Low Standby Current | 1 µA maximum | — |
| RoHS Status | [DATA_NEEDED: RoHS status] | [DATA_NEEDED: RoHS status] |
| REACH Status | [DATA_NEEDED: REACH status] | [DATA_NEEDED: REACH status] |
| AEC-Q100 Qualification | [DATA_NEEDED: AEC-Q100 qualification] | — |
| Product Type | — | 16-bit I/O expander |
| I/O Pin Count | — | 16 pins |
| Serial Bus Interface | — | I2C/SMBus |
| Maximum Bus Clock | — | 400 kHz |
| Output Configuration | — | Push-pull |
| Output Source Current | — | 10 mA and 25 mA options |
| Output Sink Current | — | 10 mA and 25 mA options |
| Interrupt | — | Yes |
| Reset | — | Yes |
| Power-On Reset | — | Yes |
| Internal I/O Pull-Up Resistors | — | Removed according to TI product comparison |
| Operating Temperature | — | -40 C to +85 C |