PCF8574DW vs PCA8574D,512 Comparison
Detailed side-by-side comparison of PCF8574DW by Texas Instruments and PCA8574D,512 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,512 - 8-Bit I2C I/O Expander 400kHz SOIC-16 | NXP
PCA8574D,512 ✗ End of LifeSpecification Comparison
| Parameter | PCF8574DW | PCA8574D,512 |
|---|---|---|
| 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 | $0.55 |
| Product Type | 8-bit I2C I/O expander | Remote 8-bit I/O expander for I2C-bus with interrupt |
| 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-bus (2-wire, SCL and SDA) |
| Port Architecture | Quasi-bidirectional I/O | — |
| Interrupt Output | Open-drain | Yes - open-drain, active-low INT |
| Standby Current | 10 µA maximum | — |
| Package | 16-SOIC | 16-SO (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] |
| Number of I/O Lines | — | 8 quasi-bidirectional (8 input / 8 output capable) |
| I2C Bus Speed | — | 400 kHz (Fast-mode) |
| Supply Voltage Range | — | 2.3 V to 5.5 V |
| Hardware Address Pins | — | 3 (A0, A1, A2) - up to 8 devices per fixed address |
| Output Type | — | Quasi-bidirectional, latched, with power-on reset |
| RoHS Status | — | Compliant (ordering code suffix ,512) |
| Compatible Predecessor | — | PCF8574 (pin-compatible family member) |
| Typical Applications | — | Keypads, LED driving, relay expansion, remote I/O |
| Max Devices per Bus | — | 8 (PCA8574) + 8 (PCA8574A) = 16 expanders / 128 I/Os |
| Lifecycle Status | — | End of Life per NXP product page |