HEF4511B Datasheet, Philips

for the HEF4511B are:
* Driving LED displays.
* Driving incandescent displays.
* Driving fluorescent display.

The HEF4511B is a BCD to 7-segment latch/decoder/driver with four address inputs (DA to DD), an active LOW latch enable input (EL), an active LOW ripple blanking input (BI), an active LOW lamp test input (LT), and seven active HIGH n-p-n bipolar tran.