PCF8574T vs PCF8574TD 对比
详细并排对比 PCF8574T 出自 NXP Semiconductors 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。
NXP Semiconductors
PCF8574T - 8-bit I2C I/O Expander, SOIC-16 | NXP Semiconductors
PCF8574T Obsolete规格对比
| 参数 | PCF8574T | PCF8574TD |
|---|---|---|
| 品牌 | NXP Semiconductors | NXP Semiconductors |
| 分类 | Interface ICs | Interface ICs |
| 生命周期状态 | Obsolete | 有效 |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $0.61 | $0.96 |
| Product Type | 8-bit I/O Expander | — |
| Bus Interface | I2C (Standard 100 kHz, Fast 400 kHz) | — |
| Supply Voltage (VCC) | 2.5 V to 6 V | 2.5 V to 6 V |
| Number of I/O Pins | 8 (quasi-bidirectional, P0-P7) | — |
| I2C Address Bits | 3 (A0, A1, A2) | — |
| Base Address | 0x20 (PCF8574) / 0x38 (PCF8574A) | — |
| Addressable Devices per Bus | 8 (addresses 0x20-0x27) | — |
| Interrupt Output | Yes, open-drain INT pin | — |
| Output Current (drive LOW) | [DATA_NEEDED: sink current per pin mA] | — |
| Standby Current | [DATA_NEEDED: Istandby in uA] | 10 uA maximum |
| 封装 | SOIC-16 (T suffix) | SO-16 (Small Outline, 16-pin) |
| 工作温度 | -40C to +85C (industrial) | -40C to +85C (industrial) |
| MSL 等级 | 1 (unlimited floor life) | [DATA_NEEDED: MSL rating] |
| RoHS 状态 | Compliant | Compliant |
| Process Technology | Silicon CMOS | Silicon CMOS |
| 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) |
| 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) |
| 安装类型 | — | Surface Mount |
| ESD Rating | — | [DATA_NEEDED: ESD HBM rating] |