7490 Asynchronous Decade and Binary Counter IC

The 7490 is a TTL logic IC that implements an asynchronous counter capable of decade (mod-10) and binary counting.
It consists of internally connected flip-flops arranged to divide input clock signals.
The device operates from a single 5 V supply and is compatible with standard TTL logic levels.
External reset inputs allow configuration for different counting sequences.
Typical applications include frequency division, event counting, digital clocks, and timing circuits.

• Asynchronous Counter Architecture supporting decade and binary modes

• Internal Flip-Flop Stages enabling divide-by-2 and divide-by-5 operation

• TTL Logic Family compatible with standard TTL levels

• Configurable Reset Inputs for custom counting sequences

• Multiple Output Taps providing binary count outputs

• Through-Hole DIP Package for breadboard and PCB use

• Model | 7490

• Device Type | Asynchronous Decade and Binary Counter IC

• Logic Family | TTL

• Counting Modes | Mod-10 (Decade), Binary

• Clock Inputs | 2 (Separate Divide Sections)

• Output Bits | 4

• Supply Voltage | 5 V

• Maximum Clock Frequency | 42 MHz

• Propagation Delay (Typical) | 25 ns

• Power Consumption (Typical) | 50 mW

• Operating Temperature Range | 0 °C to 70 °C

• Package Type | 14-Pin DIP

• 3D Model
• Datasheet