TMS44C257-15DJL
Static Column DRAM, 256KX4, 150ns, CMOS, PDSO20Manufacturer: Texas Instruments
Categories: DRAMs
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Texas Instruments TMS44C257-15DJL is a 1Mbit (256K x 4) CMOS Static Column DRAM. This component features an access time of 150ns and operates asynchronously. The TMS44C257 series supports various refresh modes including RAS ONLY, CAS BEFORE RAS, and HIDDEN REFRESH, with 512 refresh cycles. It is housed in a 20-lead PDSO (SOJ) package with J-bend terminals, suitable for surface mounting. This DRAM is designed for applications in consumer electronics and industrial systems demanding high-speed data access. Operating voltage ranges from 4.5V to 5.5V with a nominal 5V supply.
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 | 150.0000000000000000 |
| 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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