NVP6158C is a Nextchip logic device.
This device performs a fixed digital function, with timing and drive strength given by the manufacturer.
This ordering code is specified at 88.
It is used in board-level logic and signal routing, where the part has to keep its specification over the life of the equipment.
The variant is defined by Video Input Formats CVBS / COMET; universal analog HD up to 8 MP at 7.5 fps and HD Input Modes 1-2 MP at 25/30 fps; 3 MP at 18 fps; 4 MP at 15 fps; 5 MP at 12.5 fps; 8 MP at 7.5 fps.
Its advantage is that the specification is published and stable, so the design does not depend on bench characterisation.