MC14553 Datasheet | Motorola Semiconductor

MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC14553B 3-Digit BCD Counter The MC14553B 3- digit BCD counter consists of 3 negative edge triggered BCD counters that are cascaded synchronously. A quad latch at the output of each counter permits storage of any given count. The information is then time division multiplexed, providing one BCD number or digit at a time. Digit select outputs provide display control. All outputs are TTL patible. An on- chip oscillator provides the low- frequency scanning clock which drives the multiplexer output selector. This device is used in instrumentation counters, clock displays, digital panel meters, and as a building block for general logic applications. - - - - - - - TTL patible Outputs On- Chip Oscillator Cascadable Clock Disable Input Pulse Shaping Permits Very Slow Rise Times on Input Clock Output Latches Master Reset L SUFFIX CERAMIC CASE 620 P SUFFIX PLASTIC CASE 648 DW SUFFIX SOIC CASE 751G ORDERING INFORMATION MC14XXXBCP MC14XXXBCL MC14XXXBDW Plastic Ceramic SOIC ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ MAXIMUM RATINGS- (Voltages Referenced to VSS) Symbol VDD Parameter DC Supply Voltage Value Unit V V m A m A m W - 0.5 to + 18.0 Vin, Vout Iin Iout PD Tstg TL Input or Output Voltage (DC or Transient) Input Current (DC or Transient), per Pin Output Current (DC or Transient), per Pin Power Dissipation, per Package† Storage Temperature Lead Temperature (8- Second Soldering) - 0.5 to VDD + 0.5 ± 10 + 20 500 - 65 to + 150 260 TA = - 55° to 125°C for all packages. BLOCK DIAGRAM 4 CIA 12 10 11 13 CLOCK LE DIS MR 3 CIB Q0 Q1 Q2 Q3 O.F. DS1 DS2 DS3 VDD = PIN 16 VSS = PIN 8 9 7 6 5 14 2 1 15 _C _C - Maximum Ratings are those values beyond which damage to the device may occur. †Temperature Derating: Plastic “P and D/DW” Packages: - 7.0 m W/_C From 65_C To 125_C Ceramic “L” Packages: - 12 m W/_C From 100_C To 125_C TRUTH TABLE Inputs Master Reset 0 0 0 0 0 0 0 0 1 X = Don’t Care Clock Disable 0...