27C256-17 vs 27C256L-12TMB Comparison
Detailed side-by-side comparison of 27C256-17 by Microchip Technology and 27C256L-12TMB by STMicroelectronics. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
27C256-17 - 256Kbit UV EPROM 170ns 32Kx8 | Microchip Technology
27C256-17 ObsoleteSTMicroelectronics
27C256L-12TMB - 32Kx8 Military CMOS EPROM 120ns | WSI/ST
27C256L-12TMB ✗ End of LifeSpecification Comparison
| Parameter | 27C256-17 | 27C256L-12TMB |
|---|---|---|
| Brand | Microchip Technology | STMicroelectronics |
| Category | Memory ICs | Memory ICs |
| Lifecycle Status | Obsolete | End of Life |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.00 | $8.25 |
| Memory Type | EPROM - UV (windowed) | UV EPROM |
| Memory Size | 256 Kbit | 256 Kbit |
| Organization | 32K x 8 | 32K x 8 |
| Access Time | 170 ns | 120 ns |
| Interface | Parallel | — |
| Supply Voltage | 4.5 V to 5.5 V | — |
| Technology | CMOS | CMOS |
| Temperature Grade | Commercial | Military |
| Package | CDIP-28 (windowed CERDIP, 0.6 inch) | 28-pin Ceramic Leadless Chip Carrier (CLLCC) |
| Number of Terminals | 28 | 28 |
| Mounting Type | Through Hole | Surface Mount |
| Address Lines | A0 - A14 (15) | 15 (A0 to A14) |
| Data Lines | 8-bit bidirectional | — |
| Control Signals | /CE, /OE, VPP | — |
| Erase Method | Ultraviolet light (quartz window) | — |
| RoHS Status | [DATA_NEEDED: RoHS status] | unknown |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | [DATA_NEEDED: operating temperature range] |
| Supply Voltage (VCC) | — | 4.5 V to 5.5 V |
| Minimum Supply Voltage | — | 4.5 V |
| Package Shape | — | Rectangular |
| Data Outputs | — | 8, tri-state |
| Programming Voltage (VPP) | — | [DATA_NEEDED: programming voltage] |
| I/O Level | — | TTL compatible |