DS2431G+U vs DS28EC20+ 对比
详细并排对比 DS2431G+U 出自 Analog Devices 和 DS28EC20+ 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 | DS2431G+U | DS28EC20+ |
|---|---|---|
| 品牌 | Analog Devices | Analog Devices |
| 分类 | Memory ICs | EEPROM |
| 生命周期状态 | 有效 | 有效 |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $1.45 | $2.05 |
| 存储器类型 | EEPROM (Non-Volatile) | Non-Volatile EEPROM (1-Wire) |
| 存储容量 | 1 Kbit (1024 bits) | 20 Kbit (20480 bit) |
| Memory Organization | 4 pages x 256 bits (32 bytes) | 80 pages × 256 bits + 1 control page |
| 接口 | 1-Wire® (single-contact DQ + GND) | 1-Wire (single-contact serial) |
| Write Cycle Time | 2 µs (scratchpad write) | — |
| Scratchpad Size | 8 bytes (64 bits) | 32 bytes |
| Unique ROM ID | 64-bit (8-byte family code + 6-byte serial + CRC) | — |
| Write Protection | Per-page, selectable; EPROM-emulation mode (1→0 only) | — |
| 封装 | 2-SFN (6.0 mm x 6.0 mm leadless) | TO-92-3 (through-hole) |
| 工作温度 | -40 °C to +85 °C | -40 °C to +85 °C |
| Storage Temperature | -55 °C to +125 °C (per datasheet Absolute Maximum Ratings) | — |
| Supply (Parasite Power via DQ) | 2.8 V to 5.25 V (pull-up VPU) | — |
| Write Endurance | [DATA_NEEDED: end-cycle write cycles] | 200k cycles per page |
| Data Retention | [DATA_NEEDED: years] | >40 years |
| ESD Protection | [DATA_NEEDED: HBM/CDM rating] | — |
| 安装类型 | Surface Mount | Through Hole |
| RoHS 状态 | Compliant | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes | — |
| 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) |
| Programming Time (tPROG) | — | 10 ms (max) |
| Lead-Free Status | — | Yes |
| Unique 64-bit ROM ID | — | Yes (factory-lasered) |
| Backward Compatibility | — | DS2433 (4 Kbit 1-Wire EEPROM) |