SMJ44C251B-12HJM
Video DRAM, 256KX4, 120ns, CMOS, CDSO28Manufacturer: Texas Instruments
Categories: DRAMs
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Texas Instruments SMJ44C251B-12HJM is a 1Mbit (256K x 4) CMOS Video DRAM designed for high-speed graphics applications. This component operates with a 120ns maximum access time and supports FAST PAGE mode for enhanced data throughput. Key features include CAS BEFORE RAS and HIDDEN REFRESH capabilities, enabling efficient memory management. The device is housed in a 28-lead ceramic SOJ package (JESD-30 Code R-CDSO-J28) with a 1.27mm terminal pitch, suitable for surface mounting. Operating across an industrial temperature range of -55°C to +125°C, it requires a 5V supply voltage (±10%). The SMJ44C251B-12HJM is specified for use in aerospace and defense systems, meeting stringent Military standards (38535Q/M;38534H;883B).
Additional Information
Series: SMJ44C251RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Length | 18.5420 |
| Width | 10.5410 |
| Technology | CMOS |
| Access_Mode | FAST PAGE |
| Access_Time_Max | 120.0000000000000000 |
| Additional_Feature | CAS BEFORE RAS/HIDDEN REFRESH |
| JESD_30_Code | R-CDSO-J28 |
| 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 | SOJ |
| Package_Equivalence_Code | SOJ28,.4 |
| Package_Shape | Rectangular |
| Package_Style | SMALL OUTLINE |
| Refresh_Cycles | 512 |
| Screening_Level_Reference_Standard | 38535Q/M;38534H;883B |
| Seated_Height_Max | 4.5200 |
| 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 | Yes |
| Terminal_Form | J BEND |
| Terminal_Pitch | 1.270 |
| Terminal_Position | Dual |
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