SMJ44C251-2JDM
Video DRAM, 256KX4, 120ns, CMOS, CDIP28Manufacturer: Texas Instruments
Categories: DRAMs
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Texas Instruments SMJ44C251-2JDM is a 1Mbit CMOS Video DRAM with a 256K x 4 organization, featuring a 120ns maximum access time. This component supports FAST PAGE mode access and offers advanced refresh capabilities including CAS BEFORE RAS and HIDDEN REFRESH. It includes a 512 x 4 SAM port, providing dual port functionality. The SMJ44C251 series operates asynchronously with a 5V nominal supply voltage, ranging from 4.75V to 5.25V. This through-hole device is housed in a 28-lead Ceramic Dual In-line Package (CDIP28) with a pitch of 2.54mm and is rated for an extended industrial temperature range of -55°C to +125°C. Its 3-state outputs are suitable for applications in graphics controllers, display systems, and other video processing subsystems.
Additional Information
Series: SMJ44C251RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Length | 36.8300 |
| Width | 10.1600 |
| Technology | CMOS |
| Access_Mode | FAST PAGE |
| Access_Time_Max | 120.0000000000000000 |
| Additional_Feature | CAS BEFORE RAS/HIDDEN REFRESH; 512 X 4 SAM PORT |
| 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_Shape | Rectangular |
| Package_Style | IN-LINE |
| Refresh_Cycles | 512 |
| Seated_Height_Max | 4.4450 |
| Supply_Voltage_Max | 5.25000 |
| Supply_Voltage_Min | 4.75000 |
| Supply_Voltage_Nom | 5 |
| Surface_Mount | No |
| Terminal_Form | THROUGH-HOLE |
| Terminal_Pitch | 2.540 |
| Terminal_Position | Dual |
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