Motorola 4544 free download

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MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC14544B BCD-to-Seven Segment Latch/Decoder/Driver for Liquid Crystals CMOS MSI (Low­Power Complementary MOS) The MC14544B BCD­to­seven segment latch/decoder/driver is designed for use with liquid crystal readouts, and is constructed with complementary MOS (CMOS) enhancement mode devices. The circuit provides the functions of a 4­bit storage latch and an 8421 BCD­to­seven segment decoder and driver. The device has the capability to invert the logic levels of the output combination. The phase (Ph), blanking (BI), and latch disable (LD) inputs are used to reverse the truth table phase, blank the display, and store a BCD code, respectively. For liquid crystal (LC) readouts, a square wave is applied to the Ph input of the circuit and the electrically common backplane of the display. The outputs of the circuit are connected directly to the segments of the LC readout. The Ripple Blanking Input (RBI) and the Ripple Blanking Output (RBO) can be used to suppress either leading or trailing zeroes. For other types of readouts, such as light­emitting diode (LED), incandescent, gas discharge, and fluorescent readouts, connection diagrams are given on this data sheet. Applications include instrument (e.g., counter, DVM etc.) display driver, computer/calculator display driver, cockpit display driver, and various clock, watch, and timer uses. · · · · · · · 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 Non­significant zero Capable of Driving Two Low­power TTL Loads, One Low­power Schottky TTL Load or Two HTL Loads Over the Rated Temperature Range Rating Symbol VDD Vin Iin TA PD Tstg IOHmax IOLmax POHmax POLmax Value L SUFFIX CERAMIC CASE 726 P SUFFIX PLASTIC CASE 707 ORDERING INFORMATION MC14XXXBCP MC14XXXBCL Plastic Ceramic TA = ­ 55° to 125°C for all packages. PIN ASSIGNMENT LD C B D A PH BI RBO VSS 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 VDD f g e d c b a RBI e d a f g b c ООООООООООООООООООООО ООООООООООООООООООООО ООООООООООООООООООООО ООООООООООООООООООООО MAXIMUM RATINGS* (Voltages referenced to VSS) DC Supply Voltage Unit V V ­ 0.5 to + 18 ± 10 ­ 55 to + 125 500 ­ 65 to + 150 10 70 Input Voltage, All Inputs ­ 0.5 to VDD + 0.5 DC Input Current per Pin Operating Temperature Range Power Dissipation, per Package Storage Temperature Range Maximum Continuous Output Drive Current (Source or Sink) per Output Maximum Continuous Output Power* (Source or Sink) per Output mAdc DISPLAY 0 1 2 3 4 5 6 7 8 9 _C mW _C mAdc mW * POHmax = IOH (VOH ­ VDD) and POLmax = IOL (VOL ­ VSS) * Maximum Ratings are those values beyond which damage to the device may occur. Temperature Derating: Plastic "P and D/DW" Packages: ­ 7.0 mW/_C From 65_C To 125_C Ceramic "L" Packages: ­ 12 mW/_C From 100_C To 125_C REV 3 1/94 This device contains protection circuitry