PCA9557PW vs PCF8574T 比較
詳細並排比較 PCA9557PW 由 NXP Semiconductors 與 PCF8574T 由 NXP Semiconductors. 比較關鍵規格、電氣參數、封裝、生命週期狀態、價格與供貨情況，以找出最符合您設計需求的元件。
NXP Semiconductors
PCF8574T - 8-bit I2C I/O Expander, SOIC-16 | NXP Semiconductors
PCF8574T Obsolete規格比較
| 參數 | PCA9557PW | PCF8574T |
|---|---|---|
| 品牌 | NXP Semiconductors | NXP Semiconductors |
| 類別 | Interface ICs | Interface ICs |
| 生命週期狀態 | 啟用中 | Obsolete |
| Product Type | 8-bit parallel I/O expander | 8-bit I/O Expander |
| Bus Interface | I2C/SMBus | I2C (Standard 100 kHz, Fast 400 kHz) |
| VCC Operating Voltage | 2.3 V to 5.5 V | — |
| I2C/SMBus Maximum Frequency | 400 kHz | — |
| Input Port | 8-bit | — |
| Output Port | 8-bit | — |
| IO0 Output Type | High-impedance open-drain output | — |
| Parallel I/O Count | 8 I/O | — |
| 供應電流 | [DATA_NEEDED: supply current] | — |
| Input Logic Levels | [DATA_NEEDED: input logic levels] | — |
| Output Logic Levels | [DATA_NEEDED: output logic levels] | — |
| I2C Address | [DATA_NEEDED: I2C address] | — |
| 工作溫度 | [DATA_NEEDED: operating temperature range] | -40C to +85C (industrial) |
| 封裝 | 16-pin TSSOP | SOIC-16 (T suffix) |
| 安裝類型 | Surface mount | — |
| RoHS 狀態 | unknown | Compliant |
| REACH Status | unknown | — |
| AEC-Q100 Qualification | unknown | — |
| Supply Voltage (VCC) | — | 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] |
| MSL 等級 | — | 1 (unlimited floor life) |
| Process Technology | — | Silicon CMOS |