MC14553B 3−Digit BCD Counter
The MC14553B 3−digit BCD counter consists of 3 negative edge triggered BCD counters that ar...
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 compatible. 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.
Features
http://onsemi.com MARKING DIAGRAMS
PDIP−16 P SUFFIX CASE 648 1 16 MC14553BCP AWLYYWWG 1
TTL Compatible Outputs On−Chip Oscillator Cascadable Clock Disable Input Pulse Shaping Permits Very Slow Rise Times on Input Clock Output Latches Master Reset Pb−Free Packages are Available*
16 SO−16W DW SUFFIX CASE 751G 1 A WL YY WW G = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package MC14553B AWLYYWW
1
MAXIMUM RATINGS (
Voltages Referenced to VSS)
Parameter DC Supply
Voltage Range Input or Output
Voltage Range (DC or Transient) Input Current (DC or Transient) per Pin Output Current (DC or Transient) per Pin Power Dissipation, per Package (Note 1) Ambient Temperature Range Storage Temperature Range Lead Temperature (8−Second Soldering) Symbol VDD Vin, Vout Iin Iout PD TA Tstg TL Value −0.5 to +18.0 −0....
