CD4518

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CMOS DUAL UP-COUNTERS

Instructions for Using CD4518

1. Power Supply:

   • Ensure the supply voltage (V_CC) is within the range of 3.0V to 18.0V.
   • Connect the ground (GND) pin to a stable ground reference.

2. Input Signals:

   • The CD4518 has two input pins for clock (CP) and reset (RST).
   • Apply a clock signal to the CP pin to increment the counter.
   • Use the RST pin to reset the counter to zero by applying a high signal.

3. Output Signals:

   • The device provides four output pins (Q0, Q1, Q2, Q3) which represent the binary count.
   • The outputs can source up to 0.4mA and sink up to 8.0mA.

4. Propagation Delay:

   • The propagation delay time (t_pd) is typically around 20ns but can vary up to 70ns depending on the operating conditions.

5. Temperature Considerations:

   • The device operates reliably within the temperature range of -40°C to 85°C.
   • Store the device in temperatures between -65°C and 150°C.

6. Handling Precautions:

   • Handle the device with care to avoid static discharge.
   • Follow proper soldering techniques to prevent damage from excessive heat.

7. Application Notes:

   • The CD4518 is commonly used in digital circuits for counting and timing applications.
   • It can be cascaded with other counters to achieve higher count capabilities.

By following these instructions, you can effectively integrate the CD4518 into your digital circuit designs.