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| Part No | Chip | Manufacture | Speed nS | Package | Drawing | mm | Price | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | Typ | Max | Pad Pitch | Pad width | Length | |||||||
| 1741279 | SN74LVC1G139DCTR | Ti | <2.5 | SM8 | DCT | 0.65 | 0.3 | 4.25 | $ 0.69 | |||
| SN74LVC1G139DCUT | Ti / Farnell | <2.5 | VSSOP | DCU | 0.50 | 0.25 | 3,20 | £0.403 | ||||
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| Size of board 23.11 x x15 mm | Layout with SO 16 footprint overlaid | ||||||
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| The final layout. | Holes line up with the pads that need to be soldered | ||||||
| The 7 layers | Layout over the original PCB | ||||||
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| Here are the layers as a pdf file. Zooming in is generally helpful. | Area of the original card the board will cover. C2 needs to be removed (if fitted). | ||||||
| 3D View of Card Bottom | 3D View of Card Top | ||||||
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