DS28EC20+ vs DS2433+ 对比
详细并排对比 DS28EC20+ 出自 Analog Devices 和 DS2433+ 出自 Analog Devices。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 | DS28EC20+ | DS2433+ |
|---|---|---|
| 品牌 | Analog Devices | Analog Devices |
| 分类 | EEPROM | Memory ICs |
| 生命周期状态 | 有效 | 有效 |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $2.05 | $1.92 |
| 存储器类型 | Non-Volatile EEPROM (1-Wire) | EEPROM (Non-Volatile) |
| 存储容量 | 20 Kbit (20480 bit) | 4 Kbit (512 bytes) |
| Memory Organization | 80 pages × 256 bits + 1 control page | — |
| 接口 | 1-Wire (single-contact serial) | 1-Wire (Maxim proprietary, single data/power line) |
| Standard Speed (max) | 15.4 kbps | — |
| Overdrive Speed (max) | 90 kbps | — |
| Operating VPUP Range | 2.8 V to 5.25 V (overdrive requires 4 V to 5.25 V) | — |
| Write Endurance | 200k cycles per page | — |
| Data Retention | >40 years | — |
| Scratchpad Size | 32 bytes | 32 bytes (256 bits) |
| Programming Time (tPROG) | 10 ms (max) | — |
| 工作温度 | -40 °C to +85 °C | -40°C to +85°C |
| 封装 | TO-92-3 (through-hole) | TO-92-3 (through-hole) |
| 安装类型 | Through Hole | Through Hole |
| RoHS 状态 | Compliant | Compliant |
| Lead-Free Status | Yes | — |
| Unique 64-bit ROM ID | Yes (factory-lasered) | — |
| Backward Compatibility | DS2433 (4 Kbit 1-Wire EEPROM) | — |
| 存储组织 | — | 16 pages × 256 bits (32 bytes/page) |
| Family Code | — | 0x23 |
| Unique Serial Number | — | 48-bit factory-lasered |
| ROM Registration Length | — | 64 bits (8-bit CRC + 48-bit serial + 8-bit family) |
| Parasitic Power | — | Yes (power derived from 1-Wire line) |
| External Supply Required | — | No |
| Page Write Time | — | [DATA_NEEDED: page write time in ms] |
| ESD Rating | — | [DATA_NEEDED: HBM ESD rating] |
| Compatibility Family | — | DS1990 / DS18B20 / DS2401 / iButton |