The CD4511BC BCD-to-seven segment latch/decoder/driver is constructed with complementary MOS (CMOS)enhancement mode devices and NPN bipolar output driversin a single monolithic structure. The circuit provides thefunctions of a 4-bit storage latch, an 8421 BCD-to-sevensegment decoder, and an output drive capability. Lamp test(LT), blanking (BI), and latch enable (LE) inputs are used totest the display, to turn-off or pulse modulate the brightnessof the display, and to store a BCD code, respectively. It canbe used with seven-segment light emitting diodes (LED),incandescent, fluorescent, gas discharge, or liquid crystalreadouts either directly or indirectly.Applications include instrument (e.g., counter, DVM, etc.)display driver, computer/calculator display driver, cockpitdisplay driver, and various clock, watch, and timer uses.Features Low logic circuit power dissipation High current sourcing outputs (up to 25 mA) Latch storage of code Blanking input Lamp test provision Readout blanking on all illegal input combinations Lamp intensity modulation capability Time share (multiplexing) facility Equivalent to Motorola MC14511
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