74LS161A

BUY 74LS161A https://www.utsource.net/itm/p/1036239.html

Instructions for Use:

1. Power Supply:

   • Ensure the supply voltage (V_CC) is within the specified range of 4.75V to 5.25V.
   • Connect the ground (GND) pin to a stable 0V reference.

2. Input Signals:

   • Apply input signals (e.g., clock, preset, clear) within the valid voltage levels:
     • High level (V_IH): 2.0V to 5.0V
     • Low level (V_IL): 0.0V to 0.8V

3. Output Signals:

   • The output high (V_OH) should be between 2.4V and 5.0V when sourcing up to 0.4 mA.
   • The output low (V_OL) should be between 0.0V and 0.5V when sinking up to 8.0 mA.

4. Propagation Delay:

   • The typical propagation delay time (t_p) is 22 ns at 25°C with a 5V supply. Ensure that your system timing accounts for this delay.

5. Temperature Considerations:

   • Operate the device within the commercial temperature range of 0°C to 70°C.
   • Store the device in an environment where the temperature does not exceed -65°C to 150°C.

6. Power Dissipation:

   • Ensure that the total power dissipation (P_D) does not exceed 100 mW per package to avoid overheating.

7. Handling Precautions:

   • Handle the device with care to avoid static damage.
   • Use proper anti-static measures when handling and storing the device.

8. Functional Description:

   • The 74LS161A is a 4-bit binary counter with parallel load, synchronous reset, and count enable. It can be used in various digital circuits for counting, timing, and control applications.
   • The counter can be preset to any initial value using the parallel load feature.
   • The synchronous reset (MR) can be used to reset the counter to zero.
   • The count enable (ENT and ENP) inputs allow for controlling the counting operation.

By following these guidelines, you can ensure reliable and efficient operation of the 74LS161A in your digital circuit designs.