SMJ44C251B-12JDM
Video DRAM, 256KX4, 120ns, CMOS, CDIP28Manufacturer: Texas Instruments
Categories: DRAMs
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The Texas Instruments SMJ44C251B-12JDM is a 1 Mbit Video DRAM component utilizing CMOS technology. This device offers a memory organization of 256K words by 4 bits, providing a total memory density of 1048576 bits. It features an asynchronous operating mode with a maximum access time of 120ns and a fast page access mode. The SMJ44C251B-12JDM supports CAS BEFORE RAS and hidden refresh cycles, with 512 refresh cycles required. It operates from a supply voltage range of 4.5V to 5.5V and is rated for an extended temperature range from -55°C to +125°C. The component is housed in a 28-pin ceramic dual in-line package (CDIP28) with through-hole termination. This component is suitable for applications in graphics controllers and high-performance display systems.
Additional Information
Series: SMJ44C251RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Length | 36.8350 |
| Width | 15.2400 |
| Technology | CMOS |
| Access_Mode | FAST PAGE |
| Access_Time_Max | 120.0000000000000000 |
| Additional_Feature | CAS BEFORE RAS/HIDDEN REFRESH |
| JESD_30_Code | R-CDIP-T28 |
| 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 | 125.0 |
| Operating_Temperature_Min | -55.0 |
| Output_Characteristics | 3-State |
| Package_Body_Material | CERAMIC, METAL-SEALED COFIRED |
| Package_Code | DIP |
| Package_Equivalence_Code | DIP28,.4 |
| Package_Shape | Rectangular |
| Package_Style | IN-LINE |
| Refresh_Cycles | 512 |
| Screening_Level_Reference_Standard | 38535Q/M;38534H;883B |
| Seated_Height_Max | 4.8300 |
| Standby_Current_Max | 0.015000000000000 |
| Supply_Current_Max | 100.000000000000000 |
| Supply_Voltage_Max | 5.50000 |
| Supply_Voltage_Min | 4.50000 |
| Supply_Voltage_Nom | 5 |
| Surface_Mount | No |
| Terminal_Form | THROUGH-HOLE |
| Terminal_Pitch | 2.540 |
| Terminal_Position | Dual |
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