PCF8574AN vs PCF8574PWR 对比
详细并排对比 PCF8574AN 出自 Texas Instruments 和 PCF8574PWR 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 | PCF8574AN | PCF8574PWR |
|---|---|---|
| 品牌 | Texas Instruments | Texas Instruments |
| 分类 | Interface ICs | Interface ICs |
| 生命周期状态 | 有效 | 有效 |
| Device Type | [DATA_NEEDED: device type] | — |
| I/O Direction | [DATA_NEEDED: I/O direction] | — |
| Number of I/O Lines | [DATA_NEEDED: number of I/O lines] | — |
| 接口类型 | [DATA_NEEDED: interface type] | — |
| Operating Supply Voltage Range | [DATA_NEEDED: operating supply voltage range] | — |
| Input Logic Voltage Levels | [DATA_NEEDED: input logic voltage levels] | — |
| Output Logic Voltage Levels | [DATA_NEEDED: output logic voltage levels] | — |
| Output Drive Current | [DATA_NEEDED: output drive current] | — |
| Output Sink Current | [DATA_NEEDED: output sink current] | — |
| Maximum Serial Clock Frequency | [DATA_NEEDED: maximum serial clock frequency] | — |
| Address Range | [DATA_NEEDED: address range] | — |
| 静态电流 | [DATA_NEEDED: quiescent current] | — |
| 工作温度范围 | [DATA_NEEDED: operating temperature range] | — |
| 封装 | [DATA_NEEDED: package designation] | 20-pin TSSOP (PW) |
| 引脚数量 | [DATA_NEEDED: pin count] | — |
| 安装类型 | [DATA_NEEDED: mounting type] | Surface Mount |
| RoHS 状态 | [DATA_NEEDED: RoHS status] | Compliant |
| REACH Status | [DATA_NEEDED: REACH status] | — |
| Lead-Free Status | [DATA_NEEDED: lead-free status] | — |
| 功能 | — | I/O Expander |
| Number of I/O | — | 8 |
| 接口 | — | I2C (SMBus compatible) |
| Clock Frequency (Max) | — | 100 kHz |
| I2C Address Base | — | 0x20 (PCF8574A: 0x38) |
| Supply Voltage (VCC) | — | 2.5 V to 6 V |
| Supply Current (Standby) | — | 2.5 uA typical |
| Interrupt Output | — | Yes (active-low INT) |
| Hardware Address Pins | — | 3 (A0, A1, A2) |
| Max Devices on Bus | — | 8 (16 combined with PCF8574A) |
| Output Drive (Source/Sink) | — | 25 mA / 25 mA per I/O |
| I/O Type | — | Quasi-bidirectional (no direction register) |
| 工作温度 | — | -40 C to +85 C |
| MSL 等级 | — | 1 (unlimited floor life) |