PCF8574PW vs PCF8574PWR 对比
详细并排对比 PCF8574PW 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。
Texas Instruments
PCF8574PW - 8-bit I2C I/O Expander 20-TSSOP | Texas Instruments (Tape & Reel)
PCF8574PW ✓ 量产中规格对比
| 参数 | PCF8574PW | PCF8574PWR |
|---|---|---|
| 品牌 | Texas Instruments | Texas Instruments |
| 分类 | Interface ICs | Interface ICs |
| 生命周期状态 | 有效 | 有效 |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $0.77 | $0.77 |
| 功能 | I/O Expander | I/O Expander |
| Number of I/O | 8 | 8 |
| 接口 | I2C (SMBus compatible) | I2C (SMBus compatible) |
| Clock Frequency (Max) | 100 kHz | 100 kHz |
| I2C Address Base | 0x20 (PCF8574A: 0x38) | 0x20 (PCF8574A: 0x38) |
| Supply Voltage (VCC) | 2.5 V to 6 V | 2.5 V to 6 V |
| Supply Current (Standby) | 2.5 uA typical | 2.5 uA typical |
| Interrupt Output | Yes (active-low INT) | Yes (active-low INT) |
| Hardware Address Pins | 3 (A0, A1, A2) | 3 (A0, A1, A2) |
| Max Devices on Bus | 8 (16 combined with PCF8574A) | 8 (16 combined with PCF8574A) |
| Output Drive (Source/Sink) | 25 mA / 25 mA per I/O | 25 mA / 25 mA per I/O |
| I/O Type | Quasi-bidirectional (no direction register) | Quasi-bidirectional (no direction register) |
| 封装 | 20-pin TSSOP (PW) | 20-pin TSSOP (PW) |
| 工作温度 | -40 C to +85 C | -40 C to +85 C |
| 安装类型 | Surface Mount | Surface Mount |
| RoHS 状态 | Compliant | Compliant |
| MSL 等级 | 1 (unlimited floor life) | 1 (unlimited floor life) |