QD8257
DMA Controller, 4 Channel(s), 3.125MHz, CMOS, CDIP40Manufacturer: Intel
Categories: DMA Controllers
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Intel QD8257 DMA Controller, part of the QD8257 series, is a 4-channel direct memory access controller operating at a maximum clock frequency of 3.125MHz. This CMOS component features an 8-bit address bus and an 8-bit external data bus, designed for MCS-85 bus compatibility. Housed in a 40-pin CDIP (CERAMIC, GLASS-SEALED, DIP) package with through-hole mounting and a terminal pitch of 2.54mm, it operates within a supply voltage range of 4.75V to 5.25V and an ambient temperature range of 0°C to 70°C. The QD8257 is utilized in applications requiring efficient data transfer, commonly found in embedded systems and legacy computing platforms.
Additional Information
Series: QD8257RoHS Status: Manufacturer Lead Time: Product Status: DiscontinuedPackaging: Datasheet:Download Free CAD Model:
Technical Details:
| Length | 52.3250 |
| Width | 15.2400 |
| Technology | CMOS |
| Address_Bus_Width | 8 |
| Bus_Compatibility | MCS-85 |
| Clock_Frequency_Max | 3.1250000000000000 |
| External_Data_Bus_Width | 8 |
| JESD_30_Code | R-GDIP-T40 |
| Number_of_DMA_Channels | 4 |
| Number_of_Terminals | 40 |
| Operating_Temperature_Max | 70.0000 |
| Operating_Temperature_Min | 0.0000 |
| Package_Body_Material | CERAMIC, GLASS-SEALED |
| Package_Code | DIP |
| Package_Equivalence_Code | DIP40,.6 |
| Package_Shape | Rectangular |
| Package_Style | IN-LINE |
| Seated_Height_Max | 5.7200 |
| Supply_Voltage_Max | 5.2500 |
| Supply_Voltage_Min | 4.7500 |
| Supply_Voltage_Nom | 5.0000 |
| Surface_Mount | No |
| Terminal_Form | THROUGH-HOLE |
| Terminal_Pitch | 2.540 |
| Terminal_Position | Dual |
| uPs_uCs_Peripheral_ICs_Type | DMA CONTROLLER |
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