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The CD4511BC BCD-to-seven segment latch/decoder/driver is constructed with complementary MOS (CMOS)enhancement mode devices and NPN bipolar output drivers in a single monolithic structure. The circuit provides the functions of a 4-bit storage latch, an 8421 BCD-to-seven segment decoder, and an output drive capability. Lamp test (LT), blanking (BI), and latch enable (LE) inputs are used to test the display, to turn-off or pulse modulate the brightness of the display, and to store a BCD code, respectively. It can be used with seven-segment light emitting diodes (LED), incandescent, fluorescent, gas discharge, or liquid crystal readouts either directly or indirectly.
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