BCD-to-Seven Segment Latch/Decoder/Driver for Liquid Crystals

CMOS MSI (Low–Power Complementary MOS)

TheMC14544B BCD–to–seven segment latch/decoder/driver is designed foruse with liquidcrystal readouts, and is constructed with complementary MOS(CMOS) enhancement mode devices. The circuit providesthe functionsof a 4–bit storage latch and an 8421 BCD–to–sevensegment decoder and driver. The device has the capability to invert the logic levels of theoutput combination.

• Latch Storage of Code

• Blanking Input

• Readout Blanking on All Illegal Input Combinations

• Direct LED (Common Anode or Cathode) Driving Capability

• Supply Voltage Range = 3.0 V to 18 V

• Capability for Suppression of Non–significant zero

• Capable of Driving Two Low–power TTL Loads, One Low–power Schottky TTL Load or Two HTL Loads Over the Rated Temperature