74LS196-Presetable Decade Counter


The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. The 74LS196 decade counter is partitioned into divide-by-two and divide-by-five sections which can be combined to count either in BCD (8, 4, 2, 1) sequence or in a bi-quinary mode producing a 50% duty cycle output

74LS196 Features

  • Asynchronous Presettable
  • Asynchronous Master Reset
  • Easy Multistage Cascading
  • Input Clamp Diodes Limit High Speed Termination Effects

74LS196 Specifications

Supply Voltage4.75 – 5.25Vdc
Maximum Clock Frequency40Mhz
Power Dissipation2mW/gate @100kHz
Minimum Output Current8mA
Propagation Delay10nS
Fan Out (TTL Loads)20

74LS196 Pinout Diagram

74LS196 Pin Description

Pin NoPin NameDescription
1LOAD’Load Pin(Active Low)
2QCOutput Pin
3CData Input Pin
4AData Input Pin
5QAOutput Pin
6CLK 2Clock Pin 2
8CLK 1Clock Pin 1
9QBOutput Pin
10BData Input Pin
11DData Input Pin
12QDOutput Pin
13CLR’Clear Pin(Active Low)
14VCCPositive Supply


  • Clock generation
  • Clock division
  • Integrated oscillator
  • Low power CMOS
  • TTL compatible inputs
  • In frequency counting circuits

74LS196 Alternative Equivalent

Download 74LS196-Presetable Decade Counter Datasheet from the link given below.