TMS4257-15NE
Nibble Mode DRAM, 256KX1, 150ns, NMOS, PDIP16Manufacturer: Texas Instruments
Categories: DRAMs
Quality Control: Learn More
Texas Instruments TMS4257-15NE is a 256K x 1 Nibble Mode DRAM, offering a maximum access time of 150ns. This NMOS technology component features a 16-pin PDIP package with through-hole mounting. The memory organization supports 256K words with a single bit width, operating asynchronously. Key features include support for Nibble Mode, RAS Only, CAS Before RAS, and Hidden Refresh modes, alongside 256 refresh cycles. This component is suitable for applications requiring efficient data transfer and is found in industrial control systems and embedded computing. The operating temperature range is -40°C to +85°C, with a supply voltage range of 4.5V to 5.5V.
Additional Information
Series: TMS4257RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Length | 19.3050 |
| Width | 7.6200 |
| Technology | NMOS |
| Access_Mode | NIBBLE |
| Access_Time_Max | 150.0000000000000000 |
| Additional_Feature | RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH |
| JESD_30_Code | R-PDIP-T16 |
| Memory_Density | 262144.0000000000000000 |
| Memory_IC_Type | NIBBLE MODE DRAM |
| Memory_Organization | 256KX1 |
| Memory_Width | 1 |
| Number_of_Functions | 1 |
| Number_of_Ports | 1 |
| Number_of_Terminals | 16 |
| Number_of_Words | 262144.0000000000000000 |
| Number_of_Words_Code | 256k |
| Operating_Mode | Asynchronous |
| Operating_Temperature_Max | 85.0 |
| Operating_Temperature_Min | -40.0 |
| Output_Characteristics | 3-State |
| Package_Body_Material | PLASTIC/EPOXY |
| Package_Code | DIP |
| Package_Shape | Rectangular |
| Package_Style | IN-LINE |
| Refresh_Cycles | 256 |
| 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 |
Request a Quote
Clients Also Buy
TMS4257-12NE
Nibble Mode DRAM, 256KX1, 120ns, NMOS, PDIP16
TMS4257-20NE
Nibble Mode DRAM, 256KX1, 200ns, NMOS, PDIP16
TMS4257-15FME
Nibble Mode DRAM, 256KX1, 150ns, NMOS, PQCC18