PCF8574DW vs PCA8574D,518 对比
详细并排对比 PCF8574DW 出自 Texas Instruments 和 PCA8574D,518 出自 NXP Semiconductors。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 | PCF8574DW | PCA8574D,518 |
|---|---|---|
| 品牌 | Texas Instruments | NXP Semiconductors |
| 分类 | Interface ICs | Interface ICs |
| 生命周期状态 | 有效 | 停产 |
| 库存状态 | 有库存 | 有库存 |
| 单价（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 | — |
| 接口 | 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 | — |
| 封装 | 16-SOIC | 16-SOIC (SO16, 7.50 mm width) |
| 引脚数量 | 16 pins | — |
| 安装类型 | 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] | — |
| 工作温度 | [DATA_NEEDED: operating temperature range] | [DATA_NEEDED: operating temperature range] |
| 功能 | — | Remote 8-bit I/O expander for I2C-bus with interrupt |
| Number of I/O | — | 8 (quasi-bidirectional) |
| Clock Frequency | — | 400 kHz |
| 电源电压 | — | 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 |
| 生命周期状态 | — | End of Life (per NXP product page) |
| RoHS 状态 | — | Compliant |