PCA9538DBR vs PCF8574TD 对比
详细并排对比 PCA9538DBR 出自 Texas Instruments 和 PCF8574TD 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 | PCA9538DBR | PCF8574TD |
|---|---|---|
| 品牌 | Texas Instruments | NXP Semiconductors |
| 分类 | Interface ICs | Interface ICs |
| 生命周期状态 | Obsolete | 有效 |
| 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 | — |
| Standby Current | 1 uA | 10 uA maximum |
| 封装 | 16-pin SSOP | SO-16 (Small Outline, 16-pin) |
| Package Family | SSOP family, surface-mount SMD | — |
| 安装类型 | Surface mount | Surface Mount |
| 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] | — |
| RoHS 状态 | [DATA_NEEDED: RoHS status] | Compliant |
| 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] | — |
| 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 |
| 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) |
| Process Technology | — | Silicon CMOS |
| MSL 等级 | — | [DATA_NEEDED: MSL rating] |
| ESD Rating | — | [DATA_NEEDED: ESD HBM rating] |