Ordering number : ENN 7876 LA7847 Overview Monolithic Linear IC BUS Supporting, TV Vertical Output and E/W Drive. The LA7847 is EW drive and vertical deflection output ICs for high-definition TV and CRT displays in systems that use a bus control system signal-processing IC. These ICs can directly drive (including DC component) the deflection yoke from the sawtooth wave output from the bus control system signal-processing IC. Similarly, the diode modulator block can be driven from the par.