27C512QC-55 vs 27C512-25-X Comparison
Detailed side-by-side comparison of 27C512QC-55 by Macronix and 27C512-25-X by Fujitsu. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | 27C512QC-55 | 27C512-25-X |
|---|---|---|
| Brand | Macronix | Fujitsu |
| Category | Memory ICs | Memory ICs |
| Lifecycle Status | End of Life | Obsolete |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.22 | $2.95 |
| Memory Organization | 512K-bit (64K x 8) | — |
| Memory Type | CMOS UV EPROM | UV EPROM |
| Access Time | 55 ns | 250 ns |
| Supply Voltage (Read) | Single +5 V | 5 V +/- 10% |
| Programming Voltage (VPP) | +12.5 V | — |
| Family Speed Grades | 45/55/70/90/100/120/150 ns | — |
| Operation | Totally static | — |
| Interface Compatibility | Completely TTL compatible | — |
| Address Bus | A0 to A14 (15 lines) | — |
| Data Bus | D0 to D7 (8 lines, bidirectional 3-state) | — |
| Package | 28-pin ceramic DIP with quartz window (QC) | 28-pin DIP (windowed ceramic or plastic OTP variant per suffix) |
| Erase Method | Ultraviolet light through quartz window | — |
| Mounting Type | Through Hole | Through Hole |
| RoHS Status | [DATA_NEEDED: RoHS status] | unknown (legacy non-RoHS-era part) |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | [DATA_NEEDED: operating temperature range] |
| Standby Current | [DATA_NEEDED: standby current] | [DATA_NEEDED: standby current] |
| Memory Size | — | 512 Kbit (64K x 8) |
| Organization | — | 65,536 words x 8 bits |
| Technology | — | CMOS |
| Interface | — | Parallel |
| Address Lines | — | 15 (A0-A14) |
| Data Lines | — | 8 (D0-D7), 3-state outputs |
| Control Signals | — | /CE (chip enable), /OE (output enable), /PGM (program) |
| Programming Voltage | — | [DATA_NEEDED: VPP programming voltage] |
| Active Current | — | [DATA_NEEDED: active current] |
| Pinout | — | JEDEC-approved 27C512 pinout |