PCF8574TD vs PCA9538DBR 对比
详细并排对比 PCF8574TD 出自 NXP Semiconductors 和 PCA9538DBR 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 | PCF8574TD | PCA9538DBR |
|---|---|---|
| 品牌 | NXP Semiconductors | Texas Instruments |
| 分类 | Interface ICs | Interface ICs |
| 生命周期状态 | 有效 | Obsolete |
| 功能 | Remote 8-bit I/O expander for I2C-bus | — |
| Number of I/O | 8 (quasi-bidirectional) | — |
| 接口 | I2C-bus (2-wire, up to 400 kHz) | — |
| Supply Voltage (VCC) | 2.5 V to 6 V | — |
| Standby Current | 10 uA maximum | 1 uA |
| I2C Address Range (PCF8574) | 0x20 to 0x27 (3 HW address bits) | — |
| Interrupt Output (INT) | Yes, open-drain, active-low | — |
| Maximum Bus Frequency | 400 kHz | — |
| Output Drive Capability | 25 mA sink per pin (quasi-bidirectional) | — |
| 工作温度 | -40C to +85C (industrial) | — |
| 封装 | SO-16 (Small Outline, 16-pin) | 16-pin SSOP |
| 安装类型 | Surface Mount | Surface mount |
| Process Technology | Silicon CMOS | — |
| RoHS 状态 | Compliant | [DATA_NEEDED: RoHS status] |
| MSL 等级 | [DATA_NEEDED: MSL rating] | — |
| ESD Rating | [DATA_NEEDED: ESD HBM rating] | — |
| Number of I/O Ports | — | 8 ports |
| Operating Supply Voltage Range | — | 2.3 V to 5.5 V |
| 接口类型 | — | I2C and SMBus |
| Maximum I2C Bus Frequency | — | 400 kHz |
| Interrupt Output | — | 1 interrupt output |
| Reset Input | — | 1 reset input |
| Configuration Registers | — | Configuration, port, and polarity control |
| Package Family | — | SSOP family, surface-mount SMD |
| 引脚数量 | — | 16 pins |
| I/O Configuration | — | Individually configurable as input or output |
| Input Polarity Control | — | Configurable input polarity inversion |
| Address Configuration | — | Hardware-configurable bus address |
| 工作温度范围 | — | [DATA_NEEDED: operating temperature range] |
| REACH Status | — | [DATA_NEEDED: REACH status] |
| Automotive Qualification | — | [DATA_NEEDED: AEC-Q100 qualification status] |
| Lead-Free Status | — | [DATA_NEEDED: lead-free status] |
| Halogen-Free Status | — | [DATA_NEEDED: halogen-free status] |