PCA8574D,518 vs PCF8574DW 对比
详细并排对比 PCA8574D,518 出自 NXP Semiconductors 和 PCF8574DW 出自 Texas Instruments。对比关键规格、电气参数、封装、生命周期状态、价格和供货情况，以确定最适合您设计需求的元器件。
规格对比
| 参数 | PCA8574D,518 | PCF8574DW |
|---|---|---|
| 品牌 | NXP Semiconductors | Texas Instruments |
| 分类 | Interface ICs | Interface ICs |
| 生命周期状态 | 停产 | 有效 |
| 功能 | Remote 8-bit I/O expander for I2C-bus with interrupt | — |
| Number of I/O | 8 (quasi-bidirectional) | — |
| 接口 | I2C (2-wire, SCL/SDA) | I2C two-line bidirectional bus |
| Clock Frequency | 400 kHz | — |
| 电源电压 | 2.3 V to 5.5 V | — |
| Hardware Address Pins | 3 (A0, A1, A2) | — |
| Interrupt Output | Yes, open-drain active-low | Open-drain |
| Port Type | Quasi-bidirectional, independently assignable | — |
| Max Devices per Bus | 8 (16 with PCA8574A variant) | — |
| 封装 | 16-SOIC (SO16, 7.50 mm width) | 16-SOIC |
| 安装类型 | Surface Mount | Surface mount |
| Packaging | Tape & Reel | — |
| 生命周期状态 | End of Life (per NXP product page) | — |
| RoHS 状态 | Compliant | — |
| 工作温度 | [DATA_NEEDED: operating temperature range] | [DATA_NEEDED: operating temperature range] |
| 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 |
| Port Architecture | — | Quasi-bidirectional I/O |
| Standby Current | — | 10 µA maximum |
| 引脚数量 | — | 16 pins |
| Application Category | — | I/O expander |
| Bus | — | I2C/SMBus |
| Port Names | — | P0 through P7 |
| Manufacturer | — | Texas Instruments |
| Compliance Information | — | [DATA_NEEDED: RoHS status] |