4 Bit Binary Counter 7493

The 4 Bit Binary Counter 7493 is a TTL ripple counter IC that counts clock pulses in binary from 0 to 15. Inside it has a divide-by-2 stage and a divide-by-8 stage that can be used separately or joined to make a full 4-bit (divide-by-16) counter, so it is a classic chip for learning digital electronics, building frequency dividers and simple counting circuits.

4 Bit Binary Counter 7493 Specifications

• Function: 4-bit binary ripple counter (divide-by-2 plus divide-by-8)
• Logic family: TTL (7493 / 74LS93 type)
• Supply voltage: 5 V (4.75–5.25 V)
• Clock: counts on the falling (high-to-low) edge
• Reset: two reset inputs, R0(1) and R0(2); both high clears the count to 0
• Package: 14-pin DIP
• Power pins: VCC on pin 5, GND on pin 10

4 Bit Binary Counter 7493 Applications

• Binary counters and digital clocks in logic labs
• Frequency dividers (÷2, ÷8, ÷16)
• Counting pulses from buttons or sensors
• Driving LEDs or a 7-segment decoder to show a count
• Electronics education and digital logic courses

What's in the Box

• 1 × 7493 4-bit binary counter IC

Tip: For a full 0–15 count, connect output QA (pin 12) to clock input B (pin 1) and feed your clock into input A (pin 14). Power goes on pin 5 and ground on pin 10, not the usual corner pins, so double-check before switching on.

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