27C512-20FA vs 27C512-25-X 对比
详细并排对比 27C512-20FA 出自 NXP Semiconductors 和 27C512-25-X 出自 Fujitsu。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 | 27C512-20FA | 27C512-25-X |
|---|---|---|
| 品牌 | NXP Semiconductors | Fujitsu |
| 分类 | Memory ICs | Memory ICs |
| 生命周期状态 | Obsolete | Obsolete |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $1.85 | $2.95 |
| 存储容量 | 524,288 bit (512 Kbit) | 512 Kbit (64K x 8) |
| 存储组织 | 64K x 8 | 65,536 words x 8 bits |
| Maximum Access Time | 200 ns | — |
| Supply Voltage Range | 4.5 V to 5.5 V | — |
| Technology | CMOS EPROM | CMOS |
| 存储器类型 | UV / OTP EPROM (non-volatile) | UV EPROM |
| Temperature Grade | Commercial | — |
| Number of Terminals | 28 | — |
| Package Code | DIP (rectangular) | — |
| 安装类型 | Through Hole | Through Hole |
| Access Mode | Asynchronous | — |
| 输出类型 | Tri-state, 8-bit parallel | — |
| Address Inputs | A0 to A15 (16-bit address bus) | — |
| Control Signals | /CE (chip enable), /OE (output enable), /PGM | /CE (chip enable), /OE (output enable), /PGM (program) |
| RoHS 状态 | unknown | unknown (legacy non-RoHS-era part) |
| Operating Supply Nominal | 5 V | — |
| Access Time | — | 250 ns |
| Supply Voltage (Read) | — | 5 V +/- 10% |
| 接口 | — | Parallel |
| Address Lines | — | 15 (A0-A14) |
| Data Lines | — | 8 (D0-D7), 3-state outputs |
| Programming Voltage | — | [DATA_NEEDED: VPP programming voltage] |
| Standby Current | — | [DATA_NEEDED: standby current] |
| Active Current | — | [DATA_NEEDED: active current] |
| 工作温度 | — | [DATA_NEEDED: operating temperature range] |
| 封装 | — | 28-pin DIP (windowed ceramic or plastic OTP variant per suffix) |
| Pinout | — | JEDEC-approved 27C512 pinout |