PCF8574DW vs PCA8574D Comparison
Detailed side-by-side comparison of PCF8574DW by Texas Instruments and PCA8574D by NXP Semiconductors. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | PCF8574DW | PCA8574D |
|---|---|---|
| Brand | Texas Instruments | NXP Semiconductors |
| Category | Interface ICs | USB Interface ICs |
| Lifecycle Status | Active | End of Life |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.10 | $0.74 |
| Product Type | 8-bit I2C I/O expander | — |
| Number of I/O Ports | 8 | 8 quasi-bidirectional |
| I2C Maximum Clock Frequency | 100 kHz | — |
| Operating Supply Range | 2.5 V to 6 V VCC | — |
| Product-Page Supply Range | 2.5 V to 5.5 V | — |
| Interface | I2C two-line bidirectional bus | I2C-bus (SCL, SDA) |
| Port Architecture | Quasi-bidirectional I/O | — |
| Interrupt Output | Open-drain | Yes, open-drain INT with latched flag |
| Standby Current | 10 µA maximum | — |
| Package | 16-SOIC | SO16 (SOIC-16, SOT109-1) |
| Pin Count | 16 pins | — |
| Mounting Type | Surface mount | Surface Mount |
| Application Category | I/O expander | — |
| Bus | I2C/SMBus | — |
| Port Names | P0 through P7 | — |
| Manufacturer | Texas Instruments | — |
| Compliance Information | [DATA_NEEDED: RoHS status] | — |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | [DATA_NEEDED: operating temperature range] |
| Function | — | Remote 8-bit I/O expander for I2C-bus with interrupt |
| I2C Bus Speed | — | 400 kHz |
| Supply Voltage Range | — | 2.3 V to 5.5 V |
| Hardware Address Pins | — | 3 (A0, A1, A2) - 8 addresses |
| Power-on Reset | — | Yes, ports initialized high (input mode) |
| Ordering Suffixes | — | PCA8574D,512 (Reel 13 inch), PCA8574D,518 (Reel 7 inch) |
| Max Devices per Bus | — | 8 (PCA8574) or 16 with PCA8574A (128 I/Os total) |
| LED Driving | — | Direct drive, current-sink mode per family datasheet |
| RoHS Status | — | [DATA_NEEDED: RoHS status] |
| Lifecycle Status | — | End of Life (per NXP product page) |