TMS44C257-12DJL
Static Column DRAM, 256KX4, 120ns, CMOS, PDSO20Manufacturer: Texas Instruments
Categories: DRAMs
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The Texas Instruments TMS44C257-12DJL is a 1-Mbit Static Column DRAM organized as 256K words by 4 bits. This CMOS memory device features a 120ns maximum access time and supports Static Column mode operation, enabling efficient data transfer. It also incorporates RAS ONLY, CAS BEFORE RAS, and HIDDEN REFRESH modes for flexible memory management and power optimization. The component is housed in a 20-lead PDSO (Plastic Small Outline Dual J-Lead) package, specifically a SOJ type, with a 1.27mm terminal pitch, suitable for surface-mount applications. Operating within a supply voltage range of 4.5V to 5.5V, this device is designed for use in systems requiring high-speed random access memory, finding application in areas such as telecommunications and industrial control.
Additional Information
Series: TMS44C257RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Width | 7.5700 |
| Technology | CMOS |
| Length | 17.1450 |
| Access_Mode | STATIC COLUMN |
| Access_Time_Max | 120.0000000000000000 |
| Additional_Feature | RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH |
| JESD_30_Code | R-PDSO-J20 |
| Memory_Density | 1048576.0000000000000000 |
| Memory_IC_Type | STATIC COLUMN DRAM |
| Memory_Organization | 256KX4 |
| Memory_Width | 4 |
| Number_of_Functions | 1 |
| Number_of_Ports | 1 |
| Number_of_Terminals | 20 |
| 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 | PLASTIC/EPOXY |
| Package_Code | SOJ |
| Package_Shape | Rectangular |
| Package_Style | SMALL OUTLINE |
| Refresh_Cycles | 512 |
| Seated_Height_Max | 3.7600 |
| 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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