SN54S477J
OTP ROM, 256KX16, 120ns, TTL, CDIP18Manufacturer: Texas Instruments
Categories: OTP ROMs
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Texas Instruments SN54S477J is a 4Mbit (256K x 16) One-Time Programmable (OTP) Read-Only Memory (ROM) device. This asynchronous memory features a maximum access time of 120ns and operates with TTL technology. The component is housed in an 18-lead ceramic dual in-line package (CDIP18) with through-hole mounting and a terminal pitch of 2.54mm. Designed for extended temperature ranges, it operates from -55°C to +125°C. Typical applications include industrial control, telecommunications, and military systems requiring reliable, non-volatile program storage. The SN54S477 series offers a robust solution for memory-intensive designs.
Additional Information
Series: SN54S477RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Technology | TTL |
| Access_Time_Max | 120.0000000000000000 |
| JESD_30_Code | R-XDIP-T18 |
| Memory_Density | 4194304.0000000000000000 |
| Memory_IC_Type | OTP ROM |
| Memory_Organization | 256KX16 |
| Memory_Width | 16 |
| Number_of_Functions | 1 |
| Number_of_Terminals | 18 |
| Number_of_Words | 1024.0000000000000000 |
| Number_of_Words_Code | 256k |
| Operating_Mode | Asynchronous |
| Operating_Temperature_Max | 125.0 |
| Operating_Temperature_Min | -55.0 |
| Package_Body_Material | Ceramic |
| Package_Code | DIP |
| Package_Equivalence_Code | DIP18,.3 |
| Package_Shape | Rectangular |
| Package_Style | IN-LINE |
| Parallel_Serial | Parallel |
| Supply_Current_Max | 70.000000000000000 |
| Supply_Voltage_Nom | 5 |
| Surface_Mount | No |
| Terminal_Form | THROUGH-HOLE |
| Terminal_Pitch | 2.540 |
| Terminal_Position | Dual |
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