7493

• Supply voltage (VCC):75 V – 5.25 V (typical 5 V)
• Input logic high (VIH): ≥ 2 V
• Input logic low (VIL): ≤ 0.8 V
• Output logic high (VOH): ≥ 2.4 V
• Output logic low (VOL): ≤ 0.4 V
• Output current:
  • High: −0.4 mA
  • Low: 8 mA
• Power dissipation: ~50 mW typical
• Operating temperature: 0 °C – 70 °C

Timing Characteristics

• Maximum clock frequency (fmax): ~25 MHz (typical TTL)
• Propagation delay: ~15–35 ns per flip-flop

• 4-stage ripple counter (binary)
• Counts 0 → 15 (mod‑16) in binary
• Asynchronous master reset (MR) clears all outputs
• Can be cascaded for higher-bit counters
• Two sections:
• Divide-by-2 (first flip-flop, Q0)
• Divide-by-8 (remaining flip-flops, Q1–Q3)
• Parallel outputs Q0–Q3

Applications

• Frequency division / prescalers
• Digital clocks and timers
• Event counters
• Sequential logic circuits
• Pulse and waveform generation