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HCC4054B/55B/56B HCF4054B/55B/56B LIQUID-CRYSTAL DISPLAY DRIVERS 4054B 4-SEGMENT DISPLAY DRIVER STROBED LATCH FUNCTION 4055B BCD TO 7-SEGMENT DECODER/DRIVER, WITH "DISPLAY-FREQUENCY" OUTPUT 4056B BCD TO 7-SEGMENT DECODER/DRIVER WITH STROBED LATCH FUNCTION QUIESCENT CURRENT SPECIFIED TO 20V FOR HCC DEVICE OPERATION OF LIQUID CRYSTALS WITH COS/MOS CIRCUITS PROVIDES ULTRALOW-POWER DISPLAYS EQUIVALENT AC OUTPUT DRIVE FOR LIQUID-CRYSTAL DISPLAYS-NO EXTERNAL CAPACITOR REQUIRED VOLTAGE DOUBLING ACROSS DISPLAY [(VDD ­ VEE) = 18V)] RESULTS IN EFFECTIVE 36V (p-p) DRIVE ACROSS SELECTED DISPLAY SEGMENTS LOW-OR HIGH-OUTPUT LEVEL DC DRIVE FOR OTHER TYPES OF DISPLAYS ON-CHIP LOGIC-LEVEL CONVERSION FOR DIFFERENT INPUT AND OUTPUT-LEVEL SWINGS FULL DECODING OF ALL INPUT COMBINATIONS : "0 ­ 9, L, H, P, A­ " AND BLANK POSITIONS INPUT CURRENT OF 100nA AT 18V AND 25°C FOR HCC DEVICE 100% TESTED FOR QUIESCENT CURRENT MEETS ALL REQUIREMENTS OF JEDEC TENTATIVE STANDARD N°. 13A, "STANDARD SPECIFICATIONS FOR DESCRIPTION OF "B" SERIES CMOS DEVICES" EY (Plastic Package) F (Ceramic Frit Seal Package) . . . . . . . . . . M1 (Micro Package) C1 (Plastic Chip Carrier) ORDER CODES : HCC40XXBF HCF40XXBM1 HCF40XXBEY HCF40XXBC1 DESCRIPTION The HCC4054B, HCC4055B and HCC4056B (extended temperature range) and the HCF4054B, HCF4055B and HCF4056B (intermediate temperature range) are monolithic integrated circuits available in 16-lead dual in-line plastic or ceramic package and plastic micro package. The HCC/HCF4055B and HCC/HCF4056B types are single-digit BCD-to-7-segment decoder/driver circuits that provide level-shifting functions on the chip. This feature permits the BCD input-signal swings (VDD to VSS) to be the same as March 1989 or different from the 7-segment output-signal swings (VDD to VEE). For example, the BCD input-signal swings (VDD to VSS) may be as low as 0 to ­ 3V, whereas the output-display drive-signal swing (VDD to VEE) may be from 0 to ­ 5V. If VDD to VEE exceeds 15V, VDD to VSS should be at least 4V. The 7-segment outputs are controlled by the DISPLAY-FREQUENCY (DF) input which causes the selected segment outputs to be low, high, or a square-wave output (for liquid-crystal displays). When the DF input is low the output segments will be high when selected by the BCD inputs. When the DF input is high, the output segments will be low when selected by the BCD inputs. When a square-wave is present at the DF input, the selected segments will have a square-wave output that is 180° out of phase with the DF input. Those segments which are not selected will have a square-wave output that is in phase with the input. DF square-wave repetition rates for liquid-crystal displays usually range from 30Hz (well above flicker rate) to 200Hz (well below the upper limit of the liquid-crystal frequency response). The HCC/HCF4055B provides a levelshifted high-amplitude DF output which is required for driving the common electrode in liquid-crystal displays. The HCC/HCF4056B provides a