27HC256-55I/SO
OTP ROM, 32KX8, 55ns, CMOS, PDSO28Manufacturer: Microchip Technology
Categories: OTP ROMs
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Microchip Technology's 27HC256-55I-SO is a 32K x 8 CMOS OTP ROM with a 55ns access time. This component features asynchronous operation and 3-state outputs, organized as 262,144 bits of memory. The device operates from a 4.5V to 5.5V supply voltage range, with a nominal 5V requirement. Designed for surface mounting, it is housed in a 28-lead PDSO package with a 1.27mm terminal pitch. The operating temperature range is -40°C to +85°C, making it suitable for industrial applications. This OTP ROM finds use in legacy systems, firmware storage, and data buffering across various industrial and commercial electronic designs. The 27HC256 series offers robust performance for applications requiring non-volatile program storage.
Additional Information
Series: 27HC256RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Length | 17.9000 |
| Width | 7.5000 |
| Technology | CMOS |
| Access_Time_Max | 55.0000000000000000 |
| I_O_Type | COMMON |
| JESD_30_Code | R-PDSO-G28 |
| Memory_Density | 262144.0000000000000000 |
| Memory_IC_Type | OTP ROM |
| Memory_Organization | 32KX8 |
| Memory_Width | 8 |
| Number_of_Functions | 1 |
| Number_of_Terminals | 28 |
| Number_of_Words | 32768.0000000000000000 |
| Number_of_Words_Code | 32k |
| Operating_Mode | Asynchronous |
| Operating_Temperature_Max | 85.0 |
| Operating_Temperature_Min | -40.0 |
| Output_Characteristics | 3-State |
| Package_Body_Material | PLASTIC/EPOXY |
| Package_Code | SOP |
| Package_Equivalence_Code | SOP28,.4 |
| Package_Shape | Rectangular |
| Package_Style | SMALL OUTLINE |
| Parallel_Serial | Parallel |
| Programming_Voltage | 13 |
| Seated_Height_Max | 2.6500 |
| Standby_Current_Max | 0.040000000000000 |
| Supply_Current_Max | 146.000000000000000 |
| Supply_Voltage_Max | 5.50000 |
| Supply_Voltage_Min | 4.50000 |
| Supply_Voltage_Nom | 5 |
| Surface_Mount | Yes |
| Terminal_Form | Gull Wing |
| Terminal_Pitch | 1.270 |
| Terminal_Position | Dual |
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