TMS4257-15SDL
Nibble Mode DRAM, 256KX1, 150ns, NMOS, PZIP16Manufacturer: Texas Instruments
Categories: DRAMs
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Texas Instruments TMS4257-15SDL is a Nibble Mode DRAM with a memory organization of 256K x 1, providing a total density of 262,144 bits. This NMOS technology component features a maximum access time of 150ns and operates asynchronously. Key refresh modes supported include RAS Only, CAS Before RAS, and Hidden Refresh, with 256 refresh cycles. The TMS4257 series component is housed in a 16-pin PZIP package with through-hole mounting and a terminal pitch of 2.54mm. Operating voltage ranges from 4.5V to 5.5V with a nominal 5V supply. This device is suitable for applications in consumer electronics and industrial control systems, where efficient data access and memory density are critical.
Additional Information
Series: TMS4257RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Length | 20.5000 |
| Width | 2.8000 |
| Technology | NMOS |
| Access_Mode | NIBBLE |
| Access_Time_Max | 150.0000000000000000 |
| Additional_Feature | RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH |
| JESD_30_Code | R-PZIP-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 | 70.0 |
| Operating_Temperature_Min | 0.0 |
| Output_Characteristics | 3-State |
| Package_Body_Material | PLASTIC/EPOXY |
| Package_Code | ZIP |
| Package_Shape | Rectangular |
| Package_Style | IN-LINE |
| Refresh_Cycles | 256 |
| Seated_Height_Max | 8.2600 |
| 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 | ZIG-ZAG |
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