TMS44C257-15NL
Static Column DRAM, 256KX4, 150ns, CMOS, PDIP20Manufacturer: Texas Instruments
Categories: DRAMs
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Texas Instruments TMS44C257-15NL is a 1Mbit (256K x 4) Static Column DRAM. This component features a 150ns access time and operates using CMOS technology within a 5V supply range (4.5V to 5.5V). It supports Static Column, RAS-Only, CAS-Before-RAS, and Hidden Refresh modes, offering flexibility in memory access and refresh operations. The device is housed in a 20-pin PDIP (Plastic Dual In-line Package) with through-hole mounting and a standard 2.54mm terminal pitch. Its robust design makes it suitable for applications in industrial control, consumer electronics, and telecommunications equipment where reliable memory solutions are critical. The TMS44C257 series is known for its efficient operation and compatibility with established system architectures.
Additional Information
Series: TMS44C257RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Width | 7.6200 |
| Technology | CMOS |
| Length | 24.3250 |
| Access_Mode | STATIC COLUMN |
| Access_Time_Max | 150.0000000000000000 |
| Additional_Feature | RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH |
| JESD_30_Code | R-PDIP-T20 |
| 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 | DIP |
| Package_Shape | Rectangular |
| Package_Style | IN-LINE |
| Refresh_Cycles | 512 |
| Seated_Height_Max | 5.0800 |
| Supply_Voltage_Max | 5.50000 |
| Supply_Voltage_Min | 4.50000 |
| Supply_Voltage_Nom | 5 |
| Surface_Mount | No |
| Terminal_Form | THROUGH-HOLE |
| Terminal_Pitch | 2.540 |
| Terminal_Position | Dual |
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