SMJ44C251A-1HJM
Video DRAM, 256KX4, 100ns, CMOS, CDSO28Manufacturer: Texas Instruments
Categories: DRAMs
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The Texas Instruments SMJ44C251A-1HJM is a 1 Megabit (256K x 4) Video DRAM featuring CMOS technology. This component offers a maximum access time of 100ns and operates with a 5V supply. Key operational features include RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH modes, alongside a 512 x 4 SAM port. The SMJ44C251 series is designed for applications requiring high-speed video memory, commonly found in graphics controllers, display systems, and embedded processing units within the industrial and defense sectors. This device is housed in a 28-terminal ceramic, metal-sealed cofired SOJ package (JESD30 Code: R-CDSO-J28) with a pitch of 1.27mm and a seated height of 4.521mm, suitable for surface mounting. It operates across a wide temperature range from -55°C to +125°C, with a screening level reference standard of 38535Q/M; 38534H; 883B.
Additional Information
Series: SMJ44C251RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Width | 10.5410 |
| Technology | CMOS |
| Length | 18.5420 |
| Access_Mode | FAST PAGE |
| Access_Time_Max | 100.0000000000000000 |
| Additional_Feature | RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH; 512 X 4 SAM PORT |
| 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,.44 |
| Package_Shape | Rectangular |
| Package_Style | SMALL OUTLINE |
| Refresh_Cycles | 512 |
| Screening_Level_Reference_Standard | 38535Q/M;38534H;883B |
| Seated_Height_Max | 4.5210 |
| Standby_Current_Max | 0.015000000000000 |
| Supply_Current_Max | 110.000000000000000 |
| Supply_Voltage_Max | 5.25000 |
| Supply_Voltage_Min | 4.75000 |
| Supply_Voltage_Nom | 5 |
| Surface_Mount | Yes |
| Terminal_Form | J BEND |
| Terminal_Pitch | 1.270 |
| Terminal_Position | Dual |
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