Figure 1 shows the functional diagrams and pin designations of these devices, each of which is housed in a 16-pin DIL package.įIGURE 1. They have integral ripple-blanking facilities, but do not incorporate data latches. These seven-segment decoder/driver ICs are members of the LS TTL family. The rest of this article describes a few of the most popular of these devices. Some of these devices have integral ripple-blanking facilities, others have built-in data latches, and a few even have built-in decade counter stages, etc. PRACTICAL DECODER/DRIVER ICsĭecoder/driver ICs are available in both TTL and CMOS forms. This concluding episode deals with practical seven-segment decoder/driver ICs. The opening episode of this special feature explained the basic operating and usage principles of seven-segment alphanumeric displays.