SMJ44C251B-12HML
Video DRAM, 256KX4, 120ns, CMOS, CDSO28Manufacturer: Texas Instruments
Categories: DRAMs
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The Texas Instruments SMJ44C251B-12HML is a 1 Megabit (256K x 4) Video DRAM operating with a 120ns maximum access time. This CMOS component features a FAST PAGE WITH EDO access mode and supports RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH modes, along with a 512 x 4 SAM port for enhanced functionality. Designed for asynchronous operation, it utilizes a 28-terminal CDSO (CERAMIC, METAL-SEALED COFIRED) small outline package with a 1.27mm terminal pitch. The device operates within a temperature range of 0°C to 70°C and supports a supply voltage from 4.5V to 5.5V, with a nominal value of 5V. Its 3-state outputs are characteristic of its design for high-speed data handling. This memory component is commonly employed in graphics controllers and display systems.
Additional Information
Series: SMJ44C251RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Length | 18.2880 |
| Width | 10.1600 |
| Technology | CMOS |
| Access_Mode | FAST PAGE WITH EDO |
| Access_Time_Max | 120.0000000000000000 |
| Additional_Feature | RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH; 512 X 4 SAM PORT |
| JESD_30_Code | R-CDSO-N28 |
| Memory_Density | 1048576.0000000000000000 |
| Memory_IC_Type | VIDEO DRAM |
| Memory_Organization | 256KX4 |
| Memory_Width | 4 |
| Number_of_Functions | 1 |
| Number_of_Ports | 2 |
| Number_of_Terminals | 28 |
| Number_of_Words | 262144.0000000000000000 |
| Number_of_Words_Code | 256k |
| Operating_Mode | Asynchronous |
| Operating_Temperature_Max | 70.0 |
| Operating_Temperature_Min | 0.0 |
| Output_Characteristics | 3-State |
| Package_Body_Material | CERAMIC, METAL-SEALED COFIRED |
| Package_Code | SON |
| Package_Shape | Rectangular |
| Package_Style | SMALL OUTLINE |
| Refresh_Cycles | 512 |
| Seated_Height_Max | 2.5400 |
| Supply_Voltage_Max | 5.50000 |
| Supply_Voltage_Min | 4.50000 |
| Supply_Voltage_Nom | 5 |
| Surface_Mount | Yes |
| Terminal_Form | NO LEAD |
| Terminal_Pitch | 1.270 |
| Terminal_Position | Dual |
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