PCF8574DW vs PCA8574D,518 Comparison
Detailed side-by-side comparison of PCF8574DW by Texas Instruments and PCA8574D,518 by NXP Semiconductors. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
NXP Semiconductors
PCA8574D,518 - 8-Bit I2C I/O Expander 400kHz SO16 | NXP
PCA8574D,518 ✗ End of LifeSpecification Comparison
| Parameter | PCF8574DW | PCA8574D,518 |
|---|---|---|
| Brand | Texas Instruments | NXP Semiconductors |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | Active | End of Life |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.10 | $0.66 |
| Product Type | 8-bit I2C I/O expander | — |
| Number of I/O Ports | 8 | — |
| 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 (2-wire, SCL/SDA) |
| Port Architecture | Quasi-bidirectional I/O | — |
| Interrupt Output | Open-drain | Yes, open-drain active-low |
| Standby Current | 10 µA maximum | — |
| Package | 16-SOIC | 16-SOIC (SO16, 7.50 mm width) |
| 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 |
| Number of I/O | — | 8 (quasi-bidirectional) |
| Clock Frequency | — | 400 kHz |
| Supply Voltage | — | 2.3 V to 5.5 V |
| Hardware Address Pins | — | 3 (A0, A1, A2) |
| Port Type | — | Quasi-bidirectional, independently assignable |
| Max Devices per Bus | — | 8 (16 with PCA8574A variant) |
| Packaging | — | Tape & Reel |
| Lifecycle Status | — | End of Life (per NXP product page) |
| RoHS Status | — | Compliant |