5815

Designed primarily for use with high-voltage vacuum-fluorescent displays, the UCN5815A and UCN5815EP BiMOS II integrated circuits consist of eight npn Darlington source drivers with output pulldown resistors, a CMOS latch for each driver, and common STROBE, BLANKING, and ENABLE functions.

BiMOS II devices UCN5815A and UCN5815EP  have considerably better data-input rates than the original BiMOS circuits. With a 5 V logic supply, they will operate to at least 4.4 MHz. With a 12 V supply, significantly higher speeds are obtained. The CMOS inputs of UCN5815A and UCN5815EP cause minimum loading and are compatible with standard CMOS and NMOS logic commonly found in microprocessor designs. TTL circuits may require the use of appropriate pull-up resistors.

The bipolar outputs of UCN5815A and UCN5815EP  may be used as segment, dot (matrix), bar, or digit drivers in vacuum-fluorescent displays. All eight outputs can be activated simultaneously at ambient temperatures in excess of 75°C. To simplify printed wiring board layout, output connections of UCN5815A and UCN5815EP  are opposite the inputs. A minimum component display subsystem, requiring few or no discrete components, can be assembled using the UCN5815A/EP with the UCN5810AF/EPF/LWF, UCN5812AF/EPF, or UCN5818AF/EPF serial-to-parallel latched drivers.

Suffix 'A' devices are furnished in a standard 22-pin plastic DIP; suffix 'EP' indicates a 28-lead PLCC.